Cash Register ECR 7900 SERVICE MANUAL

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Cash Register

ECR 7900 SERVICE MANUAL Code Y108540-8

PUBLICATION ISSUED BY: Olivetti S.p.A. 10015 Ivrea (Italy) Gruppo Telecom Italia Via Jervis, 77- 10015 Ivrea (ITALY) www.olivetti.com

Copyright© 2008, Olivetti All rights reserved

ATTENZIONE Pericolo di esplosione se la batteria non viene sostituita in modo corretto. Sostituire solo con un tipo uguale o equivalente raccomandato dal costruttore. Eliminare le batterie usate seguendo le istruzioni del costruttore.

CONTENTS

MAJOR FEATURES................................................................................................... 1 ECR 7900 CASH REGISTER COMPONENTS .......................................................... 2 CASH REGISTER SPECIFICATIONS ....................................................................... 3 SAFETY PRECAUTIONS ........................................................................................................ 4 MAINTAINING THE CASH REGISTER ................................................................................... 4

UNPACKING AND SETTING UP THE CASH REGISTER......................................... 5 STANDARD ACCESSORIES .................................................................................................. 5

THE KEYPAD FOR ECR 7900................................................................................... 6 KEYPAD FUNCTIONS............................................................................................................. 6

OPERATOR AND CUSTOMER DISPLAYS ............................................................... 9 SWITCHING THE OPERATOR DISPLAY ON ......................................................................... 9 SWITCHING THE OPERATOR DISPLAY 0FF ........................................................................ 9 SYMBOLS AND MESSAGES.................................................................................................. 9

PROGRAMMING MODE – Operator Display ......................................................... 11 PRINTER COMPARTMENT..................................................................................... 12 1. PRODUCT OUTLINE ........................................................................................... 15 1-1. HARDWARE................................................................................................................... 15 1-2. DISPLAY......................................................................................................................... 15 1-3. KEYBOARD ................................................................................................................... 16 1-4. DRAWER ........................................................................................................................ 17 1-5. PRINTER ........................................................................................................................ 18 1-6. INTERFACE.................................................................................................................... 18 1-7 SYSTEM BLOCK DIAGRAM .......................................................................................... 19

2. TROUBLE SHOOTING GUIDANCE .................................................................... 19 2. TROUBLE SHOOTING GUIDANCE .................................................................... 20 3. CIRCUITRY .......................................................................................................... 21 3-1 POWER SUPPLY CIRCUIT ............................................................................................. 21 3-2. TRANSFORMER WIRING DIAGRAM............................................................................ 23 3-3. M30842MC

MICROCOMPUTER.................................................................................. 24

3-4. RESET CIRCUIT ............................................................................................................ 27 3-5. POWER FAIL CIRCUIT .................................................................................................. 28 3-6. WINDING MOTOR CIRCUIT .......................................................................................... 28 3-7. DISPLAY CIRCUIT ......................................................................................................... 30

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3-8. DISPLAY INFORMATION............................................................................................... 32 3-9. KEYBOARD CIRCUIT .................................................................................................... 33 3-10. DRAWER CIRCUIT....................................................................................................... 34 3-11. BUZZER CIRCUIT ........................................................................................................ 35 3-12. BATTERY CIRCUIT ...................................................................................................... 36 3-13. EXTERNAL MEMORY.................................................................................................. 38 3-13-1. SRAM (BS62LV4006SCP-70)........................................................................... 38 3-13-2. FROM (S29AL004D70TFI010) ......................................................................... 40 3-14. PRINTER CIRCUIT....................................................................................................... 43 3-15. INTERFACE CIRCUIT .................................................................................................. 46

4. DIAGNOSTIC SOFTWARE.................................................................................. 48 4-1. DIAGNOSTIC CHECK & FINISHED GOODS CHECK................................................... 48 4-2. SOFTWARE VERSION CHECK ..................................................................................... 56

5. INSTALLING SOFTWARE ................................................................................... 58 5-1.USB driver install ........................................................................................................... 66

6. ASSEMBLY INSTRUCTION................................................................................. 73 6-1. TOP CASE UNIT ............................................................................................................ 73 6-2. Display unit ASSY ......................................................................................................... 80 6-3. Bottom case unit ASSY ................................................................................................ 83

8. CIRCUIT DIAGRAM ............................................................................................. 93 9. EXPLODED DIAGRAM...................................................................................... 101

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PREFACE This Service Manual is addressed to the field engineers who will install and service the cash register. it also provides product maintenance guidelines.

SUMMARY This manual Is divided into five chapters. The first two chapters describe the operating, functional checks and maintenance procedures. Chapter 3 describes the disassembly and reassembly procedures, Chapter 4 gives troubleshooting/repair information while Chapter 5 describes the electronic circuitry.

PREREQUISITES The topics described in this manual require knowledge of similar products.

REFERENCE DOCUMENTATION • Instruction Manual (provided with the product) • Spare Parts Catalogue -

DISTRIBUTION: General LAST EDITION: January 2008

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MAJOR FEATURES • • • • • • • • • • • • • • • • • e • • • • • e e e e e e e • • •

99 departments that can be grouped into up to 10 merchandise categories; Up to 3,000 Price Look-Ups (PLU) with the possibility of associating a department and tax status to each; 15 clerk numbers to monitor the sales of individual employees with programmable Clerk security system; Maximum 12,000-line internal Electronic Journal memory, substantially expandable via SD card; Thermal printer with journal record or receipt printing capabilities; PLU creation for barcoded articles and barcode programming; Cash register programming via computer; Quantity entries using decimal point; Training mode facility with related password; Replaceable keycaps; Receipt on/off capabilities; Programmable names for departments, department (merchandise) groups, clerks, PLUs, foreign currencies and payment media; Customer sales receipt header and footer personalization and logo creation via PC; Special rounding capabilities for Swiss, Danish and Swedish and Euro currencies; Detailed department programming; 4 foreign currency exchange rates with reIated currency descriptors; Cash, check, charge card and 6 other credit card tender media keys, with change tendered on all payments; 4 different VAT rates, with temporary override; Sales transaction hold and recall function; Battery back-up protection for sales transaction and programming data; Programmable clerk operating limitations for enhanced security; Payment transfer from one payment media to another after transaction completion; Single-line customer display with programmable scrolling messages; LCD operator display with Menu system f or accessing all cash register functions; Optional passwords for Manager mode, X report mode and Programming/Z report modes; PLU rapid inquiry key; PLU fast programming key; Programmable VAT details printing on sales receipts; Multi-lingual interface f or customer receipts, management reports and display messages in Danish, Dutch, English, French, German, Portuguese, Spanish and Swedish; User-defined captions in any language for printing on receipts and reports; Keypad personalization through reassignment of keys; Programmable key sequences executed by actioning single chain function keys; Sales function selection via pop-up Iists; Barcode reader connectivity.

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ECR 7900 CASH REGISTER COMPONENTS With reference to figure:

1. Customer display. 2. Operator display. 3. Keypad. 4. Cash drawer and box. 5. Cash drawer lock and slot. 6. Item deposit drawer. 7. Power cord. 8. Storage Device (SD) - under printer compartment cover. 9. Printer compartment cover with receipt output window. 10. USB interface for connecting the computer for cash register programming. See the note below. 11. RS232 serial interface for barcode reader. NOTE: From the company website you can download the software needed to program the cash register directly from your computer.

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CASH REGISTER SPECIFICATIONS

Technical Characteristics Listed below are the technical characteristics of this cash register model. Type:

Electronic cash register with clamshell thermal printer, 10 departrnent groups, 99 departrnents, 15 derks, up to 3,000 PLU settings. Max. 12,000-line Electronic Journal internal memory, expandable via memory storage device. Removable cash drawer.

Displays: 160x80 dot, tiltable, Operator LCD for displaying all transaction data with menu system for cash register programming. 1 0-digit Client alphanumeric display. Symbols for change, subtotal, minus, total, foreign currency value, department number and item count shown. Capacity: 8-digit input and readout Printer:

24-column line thermal printer with drop-in paper loading.

Paper supply: 58.5 ± 0.5 mm thermal paper. Batteries:

3 standard ‘ AA’ size batteries which safeguard memory contents in the event of power failures.

Technology: CMOS RAM. Powercons.

Standby 12.1 W, Operating4l.8W.

Operating 32 — 104°F (0°C —40 °C) Temperature: Dimensions: 10 mm (W) x 430 mm (D) x 294 mm (H) Weight:

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9,9 Kg (21,82 lbs)

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SAFETY PRECAUTIONS The power socket for this cash register must be Iocated near the machine and must be easily accessible. Do not use this cash register outdoors in the ram or near any Iiquid.

MAINTAINING THE CASH REGISTER Provided below is information on how to maintain the cash register. Note: Before cleaning the cash register, make sure it Is powered off and/or unplugged from the wall outlet. Before unplugging the cash register from the wall outlet, make sure that three charged AA standard backup batteries are installed in the battery compartment. All data stored in memory will be cancelled if you unplug the cash register from the electrical wall outlet without back-up battery supply. 1.

Keep all liquids away from the cash register so as to avoid spills which could damage the electronic components.

2.

To clean the cash register firstly turn it off and/or unplug it from the wall outlet (be sure the back-up batteries are installed), then use just a damp cloth. Do not use corrosive substances such as solvents, alcohol, petrol, or abrasive components.

3.

Il the cash register is stored in extreme hot or cold temperatures (0 °C – 40 °C), allow the temperature inside the cash register to reach room temperature before turning it on.

4.

DO NOT attempt to pull the paper tape when the cash register Is printing or when you are loading paper. Always use the [Feed] key to feed paper. Pulling the paper tape could damage the print mechanism.

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UNPACKING AND SETTING UP THE CASH REGISTER STANDARD ACCESSORIES The cash register comes with the following items: •

One black plastic journal winder spindle

•

One roll of standard paper tape

•

Three standard ‘AN’ size batteries for the battery back-up system

• The multilingual User’s Guide, Reference Guide in English and Warranty Card + Setup Poster • A set of keys for looking the cash drawer Make sure that the cash register and all of the above items are included in the shipping canon. Open the cash register’s shipping carton and carefully withdraw each component. Make sure that the cash register and all al its accessories, listed in the section entitled Standard Accessories, are present in order to setup the cash register by following these guidelines: 1.

Place the cash register on a level, stable, vibration-free and dust-free surface. Make sure it is near a power outlet compliant will the latest safety standards.

2.

Plug the cash register into a power outlet compliant with the latest safety standards.

3.

Insert memory backup batteries as explained in the section entitled Inserting/Replacing Batteries. Do not insert the batteries unless the cash register is plugged into an electrical power outlet.

WARNING: The machine must be plugged into an electrical outlet before you insert the batteries. 4. Load the thermal paper roll as explained in the section entitled Loading Thermal Paper. 5. Set the desired program options as explained in the section Cash Register Programming.

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THE KEYPAD FOR ECR 7900 The figure below shows the keypad layout 22

3

4

6

5 24

1 19

23

21 2

7 8

20 18

9 10

17

11

16 15

14

13

12

KEYPAD FUNCTIONS The keys described here are those configured by default on the cash register keyboard, shown in figure 5. The symbol (*) indicates that the key is also used in caption programming. NOTE: Settings”, if

The keys can be reconfigured using the Free Key Layout option in “Advanced required.

1. - Advances the receipt or journal paper one me feed; advances the paper continuously when held down. Interrupts report printing when kept depressed.

2. - Pop-up list (2) allowing EC/VOID, FULI VOID or REFUND operations to be performed. As EC/VOID, deletes the last item entered, and corrects a particular entry after it is processed and printed. FULL VOID deletes full entries after a subtotal 1As REFUND, subtracts an item that is returned for refund; sales and activity totals are also rectified.

3. - As [CLERK] confirms the clerk code entered. As the [ESC] key in programming mode, displays the previous menu or exits caption programming.

4. -

Toggles the cash register between printing and not printing the sales receipt in registration and manager modes. 5. -Allows price entries for departments 20-38 and 39-99. For departments 20-38, press this key before pressing the corresponding department key. For departments 39-99, press this key, manually enter the department number using the numeric keypad and then press this key again. 6. -(*) Holds and then recalls a sales transaction so that a second transaction can be performed in the meantime. In caption programming, toggles between caps on/off to allow captions to be written in upper or lower case letters. 6

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7. - (*) Transfers payment from one form of payment media to another after the sales transaction is finalized. 8. - -(*) Pop-up list (5) allowing FC or TAKE-OUT sales operations to be performed. As FC, automatically calculates and displays the value in foreign currency of the subtotal of a sale or of a particular amount registered. As the TAKE-OUT key modifies temporarily the tax status associated with a PLU code. 9. -(*) Pop-up list (1) allowing transaction payment to be registered to a check, charge card, or one of six credit cards. 10. -(*)Subtotals a sale 11. - As the [TOTAL]key totals exact cash transactions, computes change and totals transactions that are split tendered with check, credit card and/or cash. Pressed a second time, prints one or more copies of the last receipt, depending on how multiple receipts are programmed (see “Receipt Printing Mode”). As [ENTER], in Programming mode, selects a menu option when it is highlighted, or confirms the data entered for a form field. 12. (*) Registers single or multiple item sales to departments numbered between 1 and 38. To enter a department number from 1 to 19, press the corresponding key. To enter a department number from 20 to 38, press first the

key, then the corresponding

department key. For department numbers from 39 to 99, see

above.

In caption programming, these keys can be used to input the characters indicated on the related key as indicated in the Character Table. You can define clerk names, receipt header/footer, department names, department group names, PLU product names, currency identifiers and credit card captions. As the [SP] key, can be used to add spaces between characters and to confirm entry of repeated characters. 13. - (*) Enters a decimal point for defining product quantities with decimals during sales transactions. In caption programming, as the [DEL] key, it performs the typical backspace function for deleting the last character entered. 14. -(*) Input amounts, indicate multiple items, add and subtract amounts and percentages, and input department numeric codes from 39 to 99 (see”

“above).

15. - When operated outside of a sales transaction, displays setup information: the current date and time, clerk number, Electronic Journal status and number of free EJ lines. Using and the LCD contrast can be adjusted. When operated during a sales transaction, allows multiple quantities to be specified for a sales item.

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16. - (*) Clears an entry made from the numeric keypad or with before finalizing a transaction with a Department or function key. Also used to clear error conditions. In caption programming, deletes any caption characters entered before pressing In 0ff mode, activates menu for resetting cash register. 17. - Price look-up function. Registers the preset price of an individual item to the appropriate department. When programming PLUS, to display a given PLU, enter its number then press this key. 18. - (*) Temporarily overrides a price that was assigned to a PLU number. During caption programming, when pressed before a character, sets the character as double width. 19. - Pop-up list (4) allowing Paid Out (P0) or Received on Account (RA) transactions. As the P0 key registers any money taken out of the cash drawer that is not part of a sale. AS the RA key registers any money received on account that is not part of a sale, for example, the start-up money put in the drawer at the start of each business day can be registered as RA. 20. - Pop-up list (3) allowing direct/percent discounts and add-on operations: as the 1% +/- or 2% +/- key, when appropriately programmed, applies a preset percentage reduction or add-on to the price of an item or to the sales total. As the 1+/- or 2 +/key, subtracts or adds an amount from/to an item or sales total. 21. - Opens the cash drawer without registering any amount or when changing cash for a non-sales transaction. When programming entities such as clerks PLUs, depts and so on, press …... and so on).

to display the next item in numeric sequence (i.e.: clerk O1, clerkO2,

22. - When the operator display is off, this key switches it on. When the display is on, pressing this key displays the Main menu. The Main menu contains the 0ff mode option which you can use to switch the operator display off. During a clerk transaction, allows you to switch to Manager mode to perform operations disabled for the clerk. Pressing the key again afterwards, switches back to the clerk transaction. 23. - In Programming mode, these keys can be used to move through the menu options and form fields in the direction indicated on the key. When the menu item required is highlighted, press to select it. When navigating forms, if me numbers are present on the left, jump to the line you want by entering its number followed by either arrow key. 24. - In Programming mode, when selecting data for preset value fields, use these keys to scroll through the values available, highlight the value wanted, and then select with

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OPERATOR AND CUSTOMER DISPLAYS The operator LCD display has a Menu system providing access to all cash register functions. You can raise and tilt the display to obtain the most comfortable viewing position. The pop-up, single-line, customer display can be raised and swivelled to obtain the most favorable position for customer viewing. When sales transaction data is not displayed, scrolling messages can be programmed to appear according to the cash register state (idle, off and so on).

SWITCHING THE OPERATOR DISPLAY ON To switch on the operator display press the key on the keypad. The Main menu is displayed from which you can select: • Registration mode - to enter sales transactions as a clerk (also in training mode) • Manager mode - to enter all sales transactions as a Manager (also in training mode) • X1 & X2 Report mode - to print X financial reports • Z1 & Z2 Report mode - to print Z financial reports • Programming Mode - to set up the cash register and program sales functions • 0ff mode - to switch off the menus and the operator display. See “Using the Menus” for how to navigate the menus. NOTE: The first time you switch on the cash register, it must be initialized (see “Quick Start Programming”).

SWITCHING THE OPERATOR DISPLAY 0FF To switch off the operator display, first terminate any sales transactions, then: 1. Press

to display the Main menu.

2. Use

to scroll to the option Off Mode.

3. Press

SYMBOLS AND MESSAGES The Operator Display (OD) and Customer Display (CD) symbols and messages can be understood as follows REGISTRATION MODE (4) n/a Training mode (4) n/a Hold mode - A transaction has been temporarily put on hold. (4) n/a RecalI mode - A transaction on Hold has been recalled for completion. (3) n/a Receipts 0ff - no receipts are issued until

is pressed again.

(3) n/a EJ nearly – full condition (Clerk ld.) n/a If the Clerk System is active, the clerk number/name is displayed after logon at top left. Y108540-8

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(Dept name)

(Dept Indicates dept number (CD) or no.)

Cash

CA

Indicates a sales transaction paid by cash.

Check

Ch

Indicates a sales transaction paid by check.

Credit

Cr

Indicates a sales transaction paid by credit card.

Charge

Cr

Indicates a sales transaction paid by charge card.

-

-

Displays a minus sign if the subtotal or cash tendered total is a negative number due to a return or refund.

Change

C

lndicates that amount displayed is the change due to the customer.

ST

lndicates that the amount shown is the subtotal of a transaction, including sales tax if applicable

Total

lndicates the total due from the sales transaction (OD, top-left) lndicates an amount registered in a foreign currency (left-side CD)

(FC name) n/a

dept name (OD) entered.

(no.) n/a

lndicates amounts entered and sales totals, max. 8-digits (rightside CD). lndicates that a Take-out tax rate is applied to the transaction.

(4) n/a = not applicable. These symbols clear automatically when you start the next entry or press the

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ECR 7900 Service Manual

key.

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PROGRAMMING MODE – Operator Display

Ref. (1) Navigation Mode Ref. (1) Data Entry Mode – Lowercase Ref. (1) Data Entry Mode – Uppercase letters Ref. (2) In Navigation Mode, field selection Ref. (5) Ref. (2)

In Navigation Mode, indicates a menu option (appears on the right) Manager mode

PROGRAMMING MODE – Operator Display

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PRINTER COMPARTMENT The printer compartment is on the top Ieft-hand side of the cash register. It houses the thermal paper roll, journal winder spindle, back-up batteries and the thermal printer. This cash register uses standard 21/4” (57 mm) thermal paper. LOADING THERMAL PAPER FOR ECR 7900 MODELS Proceed as follows to load the cash register with paper. 1. Make sure the cash register is plugged into a grounded power outlet. 2. Unlock, open and remove the printer compartment cover then remove the plastic journal winder spindle. ,

3. Release and Iift the clamshell mechanism as shown in the following figure.

4. With a pair of scissors, cut the end of the paper tape to create a straight, even edge so that the paper can be properly fed through the print mechanism.

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5. Set the paper roll in the bottom of the printer compartment so that the paper feeds out from the bottom of the roll.

6. Lower the clamshell mechanism and secure it in place by pushing it all the way down until it clicks into pace.

7. Replace journal winder with wheel to right of compartment. 8. Pass the edge of the customer receipt through the receipt window on the compartment cover. 9. Insert the edge of the paper into the paper slot as shown below. Reposition and dose the printer compartment cover.

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1. PRODUCT OUTLINE 1-1. HARDWARE The terminal uses 32-bits single chip microcomputer. The CPU has… 128K bytes of internal MASK ROM and 10k bytes internal RAM 512kbytes FROM 512kbtes S-RAM of external memory. This terminal uses 160 x 80 dots LCD and 10-digits 16 segment VFD. This terminal also has a battery-backed up clock that keeps track of the month, day of the year, hour and minute. The printer is SII LTPC-235, that is a line thermal printer developed for ECR use.

1-2. DISPLAY Front Display is 160 x 80 dots Multiline LCD. Rear display is 10-digits 16 segment VFD.





160 x 80 dot matrix MultiLine LCD Adjustable Display Angle, LCD Housing View area : 89.0mm x 47.5

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10 digit VFD 1 x Alphanumeric 14mm C.H. x 4.9mm

15

1-3. KEYBOARD The keyboard consists of Stroke 42 keys with key caps (except numeric keys).

Numeric keys

16

Department keys and letters for programming

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Amount tender key

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1-4. DRAWER The drawer type is DSCA, 4 Bill / 8 Coin with D/DRAWER.

D/Drawer

4 Bill tray

8Coin tray

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1-5. PRINTER The printer is SII LTPC-235, that is a line thermal printer developed for ECR use. 58mm 1 Station Thermal Printer.

1-6. INTERFACE RS232C for Barcode Reader, USB for PC communication and SD memory card slot.

USB I/F for PC

RS232C for Barcode Reader SD Memory card slot

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1-7 SYSTEM BLOCK DIAGRAM

Printer

Rear Display

Display Control

Motor

10digits 16segment VFD

Control

LTPC235

Main CPU

Front Display

M30842MC

160 x 80 dots LCD Key scans

Print Control

Return

Keyboard

Wind Motor Buzzer Drawer Sol. Driver

X’TAL

9.83 MHz Main Clock 32.768KHz Sub Clock

A0-A19 FROM

D0-D7 CS WE OE A0-A18

S-RAM

RS232C Driver

RS232C Interface

USB Interface

D0-D7 CS WE OE

SD CARD Interface +VCC3 +VCC5 +VPRN +VBB Reset

+VDRW -VPW

Power Fail Power supply

Dry Battery

VF

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2. TROUBLE SHOOTING GUIDANCE In the event following abnormal symptom happened, refer to the solution corresponding to its symptom.

No. 1

Symptom No Power.

2

Winding reel does not work.

3

Main display does not work properly.

4 5

Rear display does not turn on. Key operation unable.

6

Drawer does not open.

7 8 9

Drawer does not close. Buzzer does not beep. Cannot work memory backup.

10

Can not print properly.

11

Scanner does not work.

12 13

Cannot use USB I/F Cannot use SD card

20

Check point / Detailed symptom Check the Power supply circuit. - - - Try STEP 1&2 If Power supply circuit is OK, check RESET circuit. Start up Diagnostic software. If it doesn’t work through the Diagnostic software, start Diagnostic software again and check voltage. No display but backlight turns on. Display OK but backlight does not turn on. No display / No backlight. Check the power supply of the display tube. All keys do not work at all. Only a specific key does not work. Drawer does not open when it is not locked by a drawer lock key. Drawer remains opened or does not close. No buzzer sound when [clear] key is depressed. Check whether the batteries are supplied or not. Check the voltage of each battery. Check voltage. Cannot print or cannot Feed paper. Faded print or run print. Cannot cancel Head-up sensor error Cannot cancel Paper-end sensor error Head-up sensor or Paper-end sensor does not work. Scanner head lamp does not light up when power ON. Scanner head lamp lights up but can’t read a barcode. Cannot work the USB port. Cannot write or read the data for SD card.

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Page P.9-11 P.15 P.17 P.17 P.18 P.18 P.18 P.19 P.21 P.21 P.22 P.26 P.23 P.24 P.24 P.24 P.31 P.31 P.31 P.31 P.31 P.33 P.33 P.33 P.33

3. CIRCUITRY 3-1 POWER SUPPLY CIRCUIT +VDRW +VDRW is generated using the AC input across pins 3 of CN12. This AC voltage is rectified by D15, a 1SR154 diode. The resulting DC voltage is about +24V. This voltage is used by the drawer solenoid and the buzzer. VCC5 VCC5 is generated using the 13V AC input across pins 1 and 2 of CN12. This AC voltage is rectified by the RS402 bridge rectifier and filtered by EC14 a 15000uF capacitor. The resulting DC voltage is about +12V. It is supplied to the input of U9, a M5291 comparator and then it outputs +5V. VCC3, VBB VCC3 and VBB are generated using the VCC5. VCC5 is supplied to the input of U15, a BA00CC0WFP regulator and then it outputs about 3.6V. After 3.6V passes through D12, it becomes 3.3V as VCC3. After 3.6V passes through D13, it becomes 3.3V as VBB. VPRN VPRN the printer motor voltage is generated using the 13V AC input across pins 1 and 2 of CN12. This AC voltage is rectified by the RS402 bridge rectifier and filtered by EC14 a 15000uF capacitor. The resulting DC voltage is about +12V. It is supplied to the collector of Q10, a 2SD1415 transistor. This base voltage is controlled by ZD7. This emitter voltage is about +7.6V. -VPW The –VPW circuit uses 26.5V AC across pins 4 and 5 of CN12. This AC voltage is rectified by D4, a 1SR154 diode and filtered by EC13. The resulting DC voltage is about -30V. It is supplied to the collector of Q12, a 2SA1284D transistor, and base voltage is controlled by ZD8. -VPW is approximately -28V DC. This voltage is used by the display. VF The filament voltage, VF1, VF2 are used by the display tube. Its AC input is 4.3V, and uses a ground reference -23V from the -28V circuit dropped across ZD9 and R181, R182, a 470 ohm resistor. Fuse for Secondary side. F1 F2 F3 F4 F5

250V 250V 250V 250V 250V

1.6A 3.15A 1.6A 1A 500mA

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TR-5 19370 MRT3.15A TR-5 19370 TR-5 19370 TR-5 19370

1.6A 1.6A 1A 0.5A

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POWER SUPPLY CIRCUIT continued (5) A

TP2

D15

VDRW

VDRW

K

1SR154-400

EC18

R102 10K

R199 10K

(4)

E

+

470uF_50V Q8 2SA1036K C

B

C

R169 2.2K

TP3 VPRN

GOT-4540-SPL Q10 2SD1415A

VPRN (+7.6V)

E

B

R136 4.7K

HT1

EC11

R140 1K

+

K

C

100uF_16V

F1 TR-5 19370 1.6A

Q9 DTC143EKA

B

C25

ZD7 RD9.1EB2

0.1uF

E

A

HVPSW

(2)

PG

TP8 VCC3 A

R131 100

EC12

1SR154-400

8 7 6 5

FB10 EXCELSA35

RS402

K

C137 0.01uF_film

ZD8 RD30EB3

R103 10K

100uF_63V F5 TR-5 19370 0.5A

K

D4

R174 3.3K

A

C

2SB1455R VCC5 L1

SF-T8-40S-PF

3 2 1

K

Vout ADJ

4

4.3K_F

5

+

EC7

+

EC

*3.9K_F

10uF_16V

10

R179 C27

2.2K_F

0.1uF

-Vpw

A

0(3225)

K

N.C. Vin CTL

R180

TP6 -Vpw

R184

RD5.6EB1 0.1uF_50V

D11 EC31QS06

EC16 1000uF_16V

(3)

K

(6)

PG

E

TR-5 19370 1A C139

+

330pF

C26 0.1uF

D13

EC31QS06 R178

U15 BA00CC0WFP

FB11

C138

A

TP7 VCC5

GN1 GND-ONE_POINT

F4

ZD9

3.6K_F R175 1.1K_F

Q12 2SA1284D

1SR154-400

R181 470

+

100uF_50V

B

+

A

EC13

B7P-SHF-1AA

EC15

15000uF_25V

10K

-

*ERZV05D390

B

300_1W

R176

EC14 +

N

M

CN12

Q11

R177

TP9 VBB VBB

A

+ L

1 2 3 4 5 6 7

1 2 3 4

EXCELSA35 R104

MRT 3.15A

C136

SC SE Co GND

M5291FP

DB1 F2

Qo Ipek Vin Vref

GND

K

P

TR-5 19370 1.6A

D3

FIN

A

VCC3

K

EC31QS06

+

100uF_16V

(1)

E U9 F3

C

TP5 Vin1

Vin1

D12

VF1 TP13 VF1

R183 56K

(7)

TP10 VS

R182 470

TP12 VF2 R185 VF2

Trouble shooting - STEP 1 Check the voltage (DC +5.0V) at point (1). If it does not output properly - - - Check FUSE F2 & F3 continuity and replace it if OPEN. Check the voltage (DC +3.3V) at point (2). If it does not output properly - - - Check FUSE F2 & F3 continuity and replace it if OPEN. Check the voltage (DC +3.3V) at point (2). If it does not output properly - - - Check FUSE F2 & F3 continuity and replace it if OPEN. Check the voltage (DC + 7.6V) at point (4). If it does not output properly- - - Check FUSE F1&F2 continuity and replace it if OPEN. Check the voltage (DC +24V) at point (5). If it does not output properly- - - Check FUSE F1 continuity and replace it if OPEN. Check the voltage (DC -28V) at point (6). If it does not output properly- - - Check FUSE F5 continuity and replace it if OPEN. Check the voltage (AC 3.9V) at point (7). If it does not output properly- - - Check FUSE F4 continuity and replace it if OPEN. - STEP 2 After replacing FUSE at STEP 1 but the FUSE opens again.- - - Replace Main board. No voltage at all the points from (1) to (7). - - - Replace Transformer.

22

ECR 7900 Service Manual

Y108540-8

3-2. TRANSFORMER WIRING DIAGRAM

PrimaryFuse AC250VT500mAL

CT-89E 115

/ 2A

AC13V AC24V

Input Voltage AC230V 50Hz

AC26.7V

1 2 3 4 5 6 7

(1)

AC4.8V

Trouble shooting - Check the Continuity at Primary FUSE. If it’s OPEN. - - - Replace Fuse. After replacing FUSE but it opens again.- - - Check Power Supply circuit. (P.9, 10) - Check the Thermal Fuse. Check the voltage (AC 4.8V) at point (1) (6 pin and 7 pin). If it outputs almost 0V - - - Replace Transformer.

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ECR 7900 Service Manual

23

3-3. M30842MC

MICROCOMPUTER

Refer to the specification (attached).

24

ECR 7900 Service Manual

Y108540-8

Port Assignment for ECR7900

(M30842MC)

Port Assign List M32C/ 84 Group 144Pin Version Por t # P0

P1

P2

P3

P4

P5

P6

P7

P8

0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7

Pi n Speci f i cat i on # Pi n Name 122 D0/ AN00 121 D1/ AN01 120 D2/ AN02 119 D3/ AN03 113 D4/ AN04 112 D5/ AN05 111 D6/ AN06 110 D7/ AN07 109 D8 108 D9 107 D10 106 D11 105 D12 104 D13/ I NT3# 103 D14/ I NT4# 102 D15/ I NT5# 101 A0( / D0) / AN20 100 A1( / D1) / AN21 99 A2( / D2) / AN22 98 A3( / D3) / AN23 97 A4( / D4) / AN24 96 A5( / D5) / AN25 95 A6( / D6) / AN26 94 A7( / D7) / AN27 92 A8( / D8) 85 A9( / D9) 84 A10( / D10) 83 A11( / D11) 82 A12( / D12) 81 A13( / D13) 80 A14( / D14) 79 A15( / D15) 78 A16 77 A17 75 A18 73 A19 72 A20/ CS3# 71 A21/ CS2# 70 A22/ CS1# 69 A23#/ CS0# 65 WRL#/ WR# 64 WRH#/ BHE# 63 RD# 62 CLKout / BCLK/ ALE 55 HLDA#/ ALE 54 HOLD# 53 ALE 52 RDY# 47 CTS0#/ RTS0#/ SS0# 46 CLK0 45 RXD0/ SCL0/ STXD0 44 TXD0/ SDA0/ SRXD0 43 CTS1#/ RTS1#/ SS1# 42 CLK1 40 RXD1/ SCL1/ STXD1 38 TXD1/ SDA1/ SRXD1 37 TA0out / TXD2/ SDA2/ SRXD2/ I NPC16/ OUTC16 36 TB5i n/ TA0i n/ RXD2/ SCL2/ STXD2/ OUTC17/ I NPC17 35 TA1out / V/ CLK2 34 TA1i n/ V#/ CTS2#/ RTS2#/ SS2#/ I NPC10/ OUTC10/ I STXD1/ BE1out 33 TA2out / W/ I NPC11/ OUTC11/ I SCLK1 32 TA2i n/ W#/ I NPC12/ OUTC12/ I SRXD1/ BE1i n 31 TA3out / CAN0out / OUTC13/ I NPC13/ I STXD0 30 TA3i n/ CAN0i n/ OUTC14/ I NPC14/ I SCLK0 29 TA4out / U/ I SRXD0 28 TA4i n/ U#/ OUTC15/ I NPC15 27 I NT0#/ CAN0out 26 I NT1#/ CAN0i n 25 I NT2# 24 NMI # 18 Xcout 17 Xci n

Y108540-8

MODEL: ECR7900 CPU : M30842MC- xxxGP

I / O Type I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I / O O. D. I / O O. D. I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I I/O I/O

Si gnal Name D0 D1 D2 D3 D4 D5 D6 D7 STB1# STB2#

Si gnal Speci f i cat i on

Dat a Bus b0 Dat a Bus b1 Dat a Bus b2 Dat a Bus b3 Dat a Bus b4 Dat a Bus b5 Dat a Bus b6 Dat a Bus b7 PH. St r obe 1 PH. St r obe 2

I/O I/O I/O I/O I/O I/O I/O I/O I/O O O

SD_CARD SD_CARD I n I SD_WP SD_Wr i t e Pr ot ect I A0 Addr ess Bus b0 O A1 Addr ess Bus b1 O A2 Addr ess Bus b2 O A3 Addr ess Bus b3 O A4 Addr ess Bus b4 O A5 Addr ess Bus b5 O A6 Addr ess Bus b6 O A7 Addr ess Bus b7 O A8 Addr ess Bus b8 O A9 Addr ess Bus b9 O A10 Addr ess Bus b10 O A11 Addr ess Bus b11 O A12 Addr ess Bus b12 O A13 Addr ess Bus b13 O A14 Addr ess Bus b14 O A15 Addr ess Bus b15 O A16 Addr ess Bus b16 O A17 Addr ess Bus b17 O A18 Addr ess Bus b18 O A19 Addr ess Bus b19 O A20 Addr ess Bus b20 O RAMCS# SRAM Sel ect O I OCS# I O Sel ect O ROMCS# FLASH Memor y Sel ect O Wr i t e Si gnal O WR# N. C. ( O) RD# Read Si gnal O ( BCLK) To Gat e Ar r ay Cl ock 0 N. C. ( O) EPM# SI O Mode EPM# (I ) N. C. ( ALE) ( O) N. C. Fi xed Hi gh (I ) VFD_CS0# Lower Di spl ay Sel ect O VFD_CLK Di spl ay Tx Cl ock O VFD_CS1# Upper Di spl ay Sel ect O VFD_TXD Di spl ay Tx Dat a O SD_CS# SD_CS O SD_CK SD_SCLK O SD_DI SD_Dat a I n I SD_DO SD_Dat a Out O TxD2 RS232C #2 O RxD2 RS232C #2 I CTS2# RS232C #2 I RTS2# RS232C #2 O BUZZER Buzzer O BKL_ON LCD BackLi ght LED On O LCD_RST# LCD Reset O FRDY Fl ash Memor y Ready I WI ND_ON Wi ndi ng Mot or On O ( NET RST#)Net ( LAN) Reset O PF# Power Fai l Si gnal I ( NET I NT#)I RC I nt er upt I ( G_RI NT#) G/ A I nt er r upt I N. C. ( NMI ) Fi xed Hi gh (I ) Xcout Cr yst al 32. 768kHz O Xci n Cr yst al 32. 768kHz I

ECR 7900 Service Manual

Pi n I NI TI AL PF( Backup) Remar k Ter m. I / O Dat a I / O Dat a P. D. O L Dat a Bus P. D. O L P. D. O L P. D. O L P. D. O L P. D. O L P. D. O L P. D. O L O H O L Pr i nt er St r obe O H O L

p. u. p. u. P. U. p. u. P. U. P. U. P. U. P. U. P. U. p. u. p. u. p. u. p. u. P. D. P. D. p. u. P. U. P. D. P. U. -

I I

O O O

H H H

O I

( H)

I O O O O O O I O O I I O O O O I O O I I I I O I

( H) H L H L H L L L L H L L H L H H ( H) ( H) ( H)

I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O I O I O O O O O O I O O I I O O O O I O O I O O I O I

L L L L L L L L L L L L L L L L L L L L L L L H L H H L H L L ( H) L ( H) L L L L L L L L L L L L L L L ( H) L L L L L ( H)

SD CARD Adr ess Bus

Adr ess Bus

Adr ess Bus

SRAM, Expanded SRAM LCD Pr ogr am ROM CPU Cont r ol Si gnal f or Fl ash CPU

Di spl ay Cont r ol

SD CARD f or Fl ash CPU SD CARD RS232C #2 f or USB Buzzer Di spl ay Cont r ol FMEM Ready Si gnal Wi ndi ng Mot or LAN PF CPU Cont r ol Si gnal f or RTC

25

P9

P10

P11

P12

P13

P14

P15

0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4

7 TB0i n/ CLK3 6 TB1i n/ RXD3/ SCL3/ STXD3 5 TB2i n/ TXD3/ SDA3/ SRXD3 4 DA0/ TB3i n/ CTS3#/ RTS3#/ SS3# 3 DA1/ TB4i n/ CTS4#/ RTS4#/ SS4# 2 ANEX0/ CLK4 1 ANEX1/ TXD4/ SDA4/ SRXD4 144 ADt r g#/ RXD4/ SCL4/ STXD4 141 AN0 139 AN1 138 AN2 137 AN3 136 AN4/ KI 0# 135 AN5/ KI 1# 134 AN6/ KI 2# 133 AN7/ KI 3# 118 I NPC10/ OUTC10/ I STXD1/ BE1out 117 I NPC11/ OUTC11/ I SCLK1 116 I NPC12/ OUTC12/ I SRXD1/ BE1i n 115 I NPC13/ OUTC13 114

I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O

HCLK HLATCH# nDATA HVPSW RTS1# CTS1# TxD1 RxD1 SHVP SVBT R_SHTH J_SHTH R_PEND J_PEND R_HDUP J_HDUP DRW_ON DRW_SEN BCR_ON CHG_ON VSD_EN

Pr i nt er Head Cl ock Pr i nt er Head Lat ch Pr i nt er Head Dat a Pr i nt er Power On RS232C #1 RS232C #1 RS232C #1 RS232C #1 Ther mal Head Power Back Up Bat t er y Sense TH Temp. R TH Temp. J Paper End R Paper End J Head Up R Head Up J Dr awer On/ Of f Dr awer Sensor BCR Power On Back Up Bat t er y SD_Vsd Power On

O O O O O I O I AI AI AI AI I I I I O I O O O

P. D. P. D. P. D. p. u. p. u. p. u. p. u. p. u. p. u. P. D. P. D. P. D.

O O O O O I O I I I I I I I I I O I O O O

0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6

90 89 88 87 86 68 67 66 61 60 58 56 51 50 49 48 14 13 12 11 10 9 8

I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O

KR0 KR1 KR2 KR3 KR4 KR5 KR6 KR7 KS0 KS1 KS2 KS3 KS4 KS5 KS6 KS7 KR8 KR9 KR10 KR11 ( KR12) ( KR13) CTL RTN

Key Ret ur n 0 Key Ret ur n 1 Key Ret ur n 2 Key Ret ur n 3 Key Ret ur n 4 Key Ret ur n 5 Key Ret ur n 6 Key Ret ur n 7 Key Scan 0 Key Scan 1 Key Scan 2 Key Scan 3 Key Scan 4 Key Scan 5 Key Scan 6 Key Scan 7 Key Ret ur n 8 Key Ret ur n 9 Key Ret ur n 10 Key Ret ur n 11 ( Key Ret ur n 12) ( Key Ret ur n 13) Cont r ol Lock Ret ur n

I I I I I I I I O O O O O O O O I I I I I I I

p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u. p. u.

I I I I I I I I O O O O O O O O I I I I I I I

0 1 2 3 4 5 6 7

131 AN150/ I STXD0 129 AN151/ I SCLK0 128 AN152/ I SRXD0 127 AN153 126 AN154 125 AN155 124 AN156 123 AN157 15 BYTE ( * 1) 16 CNVss ( * 2) 19 RESET# 20 Xout 21 Vss 22 Xi n 23 Vcc1 39 Vcc1 41 Vss 57 Vss 59 Vcc2 74 Vcc2 76 Vss 91 Vcc2 93 Vss 130 Vss 132 Vcc1 140 Avss 142 Vr ef 143 Avcc

I/O I/O I/O I/O I/O I/O I/O I/O I I I O I Power I I Power I Power I Power I Power I Power I Power I Power I Power I Power I Power I Power I Power I I Power

PH1 Mot or PH1 PH2 Mot or PH2 PH3 Mot or PH3 PH4 Mot or PH4 R_SEL R_MOTOR_SELECT J_SEL J_MOTOR_SELECT C_SEL C_MOTOR_SELECT C_SEN CUTTER SENSOR P. U. P. U. ( H) : 8bi t Dat a Bus FMP_CNVSS P. D. ( Vss) : Mem. Ext . Mode CPU_RST# RESET CR pi n Cer ami c Resonat or 9. 83MHz GND Gr ound( 0V) CR pi n Cer ami c Resonat or 9. 83MHz VBB P- ON: +3. 3V/ BackUp: +3. 3V_3V VBB P- ON: +3. 3V/ BackUp: +3. 3V_3V GND Gr ound( 0V) GND Gr ound( 0V) VBB P- ON: +3. 3V/ BackUp: +3. 3V_3V VBB P- ON: +3. 3V/ BackUp: +3. 3V_3V GND Gr ound( 0V) VBB P- ON: +3. 3V/ BackUp: +3. 3V_3V GND Gr ound( 0V) GND Gr ound( 0V) VBB P- ON: +3. 3V/ BackUp: +3. 3V_3V GND Gr ound( 0V) VBB P- ON: +3. 3V/ BackUp: +3. 3V_3V VBB P- ON: +3. 3V/ BackUp: +3. 3V_3V

O O O O O O O I I I I O I I I I I I I I I I I I I I I I

p. u. p. u. p. u. p. u. P. U. P. D. P. U.

O O O O O O O I I I I

I NPC14/ OUTC14 I NPC15/ OUTC15 I NPC16/ OUTC16 I NPC17/ OUTC17

L H L L H L

H H H H L H L H H

L L L L L L L L

H H H H ( H) ( L)

O O O O O I O I I I I I I I I I O I O O O

O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O I I I I

L Pr i nt er Cont r ol L L L L RS232C #1, ( L) Pr ogr am Down Load L ( L) Anal og I nput

Pr i nt er Paper Pr i nt er Head L L L L L

Dr awer Cont r ol BCR Bat t er y Char ge SD CARD

L Key r et ur n L L L L L L L L Key r et ur n L L L L L L L L Key r et ur n L L L L L L L L L L L L L L ( H) ( L)

Pr i nt er Mot or

Mot or Sel ect Cut t er Sensor f or Fl ash CPU

O. D. : Open Dr ai n out put Power : Power suppl y i nput P. U. : Pul l up ( VBB) p. u. : Pul l up ( VCC) P. D. : Pul l down ( GND)

26

ECR 7900 Service Manual

Y108540-8

3-4. RESET CIRCUIT The reset circuit prevents the CPU from starting to operate before the system is fully powered-up and initialized. Then 29m sec. after power is applied, reset goes high and the CPU can begin functioning. When power is first applied to the circuit, the VBB begins charging C141 a capacitor. Output of Reset IC(U10) is low-resistance at VBB-Line is less than 3.0 Volts.

VBB

VBB

TP11 RST

R107 4.7K RESET#

RESET#

U10

C29

1 2 3

VOUT VDD GND

C.T. N.C.

BD5230G-TR

5

(1)

4 C141 4700pF

0.1uF

RE SET

Trouble shooting - When power ON but no display / any key operation unable. Check the voltage at point (1) DC +3.3V - - - Reset circuit is OK. The problem may come from other causes. Check the Power supply circuit again and replace Main board if no problem found in the power supply circuit. 0V - - - Reset circuit has a problem. Replace Main board.

Y108540-8

ECR 7900 Service Manual

27

3-5. POWER FAIL CIRCUIT Power fail generated by a circuit using the PF DTC voltage. When power is on and the system is operating normally, the power fall signal stays at a higher voltage than 1.21V. The CPU watches power failure signals all the time. When power is on, PF -5pin at High level. When power down and CPU(U1)27pin voltage goes down lower than PF detection voltage(=1.21V), low-power-supply detector circuit of the CPU works and execute PF. Vin1

VCC5

VCC3

Power Fa i l R170 4.7K_F

C134

R172 *3.9K_F

VCC3 0.1uF TP4 PF

U8 1 2 3 4

C133 0.1uF

R171 1.5K_F

NC IN NC GND

NC VCC OUT CAP

8 7 6 5

R106 4.7K PF#

M51957BFP

PF#

R173 *47K

C135 *1000pF

3-6. WINDING MOTOR CIRCUIT The winding motor power is VPRN at Printer Power voltage. Printer Power voltage is on, and WIND_ON is Hi ,when Q3 is ON as the winding motor is run.

VPRN R134 To Motor

(1)

K

18_1W

*0.1uF_50V C

A

1SR154-400

(2)

From Motor

C58

D2

WIND_ON

WIND_ON

R135

C59

C60

*0.1uF_50V

*0.1uF_50V

Q3

B

4.7K

2SD1817 E

PG R88 10K

WI ND MOTOR I / F PG

28

ECR 7900 Service Manual

Y108540-8

Trouble shooting - Start up the Diagnostic software and check whether winding motor is properly working or not. - - -See 4-1. DIAGNOSTIC SOFTWARE CHECK - If Winding motor does not work, start up Diagnostic software again and check the following voltage when the test report is printing on a receipt. Note) When a printer is not working, the power supply of the winding motor should be OFF status / 0V. Therefore make sure the following voltage should be checked during the printing in the diagnostic checking. Check voltage (DC +7.6V) at point (1) If it output properly - - - Replace the motor If it does not output properly - - - Check Power supply circuit (p. 9-11) Check voltage (DC +5.0V) at point (2) If it output properly - - - Replace the motor or Main board If it does not output properly - - - Replace the Main Board

Y108540-8

ECR 7900 Service Manual

29

3-7. DISPLAY CIRCUIT VCC5 FB7 0(3216)

10K 10K 10K 10K 10K 10K 10K 10K

FB6

C114 C22

0.1uF_film

EC10 + 100uF_16V

(1)

0.1uF

0(3216)

20

R191 R192 R193 R194 R195 R196 R197 R198

C20

0.1uF LC_CD# LC_RD# LC_RST# LC_WR# LC_D0 LC_D1 LC_D2 LC_D3 LC_D4 LC_D5 LC_D6 LC_D7 LC_CE# LC_LEDA

0.1uF

U11 33 33 33 33 33 33 33 33

1 19

33 33 33 33 33

K 2

K 2

K 1 ZD6

3 A

K 2

K 1 3 A

K 2

K 1 3 A

K 2

K 1 3 A

K 2

K 1

K 1 3 A

ZD5

C24 0.1uF

*HZM6.2MWATR-E

R74 R75 R76 R77 R78

ZD4

*HZM6.2MWATR-E

G1 G2

18 17 16 15 14 13 12 11

Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8

ZD3

*HZM6.2MWATR-E

VCC

C55 *1000pF

A1 A2 A3 A4 A5 A6 A7 A8

GND

2 3 4 5 6 7 8 9

ZD2

*HZM6.2MWATR-E

0.1uF

U12 A0 RD# LCD_RST# WR# LCD_CS#

ZD1 *HZM6.2MWATR-E

20

C23

3 A

VCC3

R36 0

*HZM6.2MWATR-E

10

SN74LV245APWR

100pF 100pF 100pF 100pF 100pF 100pF

DIR G

R66 R67 R68 R69 R70 R71 R72 R73

C123 C124 C125 C126 C127 C128

B1 B2 B3 1 B4 0 B5 B6 B7 B8

100pF 100pF 100pF 100pF 100pF 100pF 100pF 100pF

1 19

A1 A2 A3 A4 A5 A6 A7 A8

C115 C116 C117 C118 C119 C120 C121 C122

RD#

18 17 16 15 14 13 12 11

VCC

2 3 4 5 6 7 8 9

GND

D0 D1 D2 D3 D4 D5 D6 D7

10

SN74LV541APWR

VCC5 Q7 E

C

R98

B

2SA1036K

10K R168

C

2K

Q6 DTC143EKA

B

E

BKL_ON

Trouble shooting - No display but backlight turns on - - Replace LCD unit or Main board. - Display OK, but backlight does not turn on. Check voltage at point (2) DC +5V - - - Replace LCD unit. DC 0V - - - Replace Main board. (2)

- No display and no backlight. Check voltage at point (1) DC +5V - - - Replace LCD unit or Main board. DC 0V - - - Check Power supply circuit. (P.9-11)

30

ECR 7900 Service Manual

Y108540-8

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

C03-20AG1 10 x 2 (MALE) 10x2 Box-Header(P=2.54mm)

LCD Module

CN11

C21 VCC3

VCC5VF2 VCC5

VCC5 VF1 -Vpw

C142 1000pF

0(3216)

K

C143 1000pF R139 1K

R99 R100 R101

K

10K 10K 10K

*1SS355 K *1SS355 *1SS355

FB8

9 7 5 3

R79 R80 R81

A

D8 A D9 A D10 A

K

TC74VHCT244FT

33 33 33

EC6

+

*0.1uF

10uF_16V

- Check the power supply of Display tube. Check voltage (AC 3.9V) at point (3) If it outputs properly - - - Replace Customer Display Unit. If it doesn’t output properly - - - Check Power supply circuit. (P.9-11) Check voltage (DC -28V) at point (4) If it outputs properly - - - Replace Customer Display Unit. If it doesn’t output properly - - - Check Power supply circuit. (P.9-11) Check voltage (DC +5V) at point (5) If it outputs properly - - - Replace Customer Display Unit. If it doesn’t output properly - - - Check Power supply circuit. (P.9-11)

Y108540-8

ECR 7900 Service Manual

EC17 *100uF_50V

FB9 0(3216)

Trouble shooting

31

VF1 VCC GND CS0# TXD CLK -VPW VF2

B8B-PH-K-S

C129 *330pF *330pF *330pF

Y1 Y2 Y3 Y4

1 2 3 4 5 6 7 8

C130 C131 C132

G A1 A2 A3 A4

*1SS355 K *1SS355 *1SS355 K

VFD_CS0# VFD_TXD VFD_CLK

19 11 13 15 17

D5 D6 D7

A

A

CN9

+

U6B

3-8. DISPLAY INFORMATION Front Display LCD (160 x 80 dots) Part No.: GY1608A8SKY6T Refer to the specification (attached). Rear Display VFD (16 segments)

Part No.: 10LY-01G

.

. G10

G9

. G8

.

. G7

G6

. G5

. G4

. G3

. G2

. G1

Segment a1 f

h

j g

e r

a2 k

b

m p

n

c dp

d1

d2

．

(Union Jack)

Character size : 14 mm (H) x 4.9 mm (W)

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3-9. KEYBOARD CIRCUIT Keyboard Scan lines are the CPU ports, these CPU ports are P120-126 and P130-137. Keyboard Return lines are the CPU ports, these CPU ports are P140-145. It is consist of matrix of Scan line (15) × Return line (6). KEY MATRIX 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11

KEY RTN0 KEY RTN1 KEY RTN2 KEY RTN3 KEY RTN4 KEY SCN0 KEY SCN1 KEY SCN2 KEY SCN3 KEY SCN4 KEY SCN5 KEY SCN6 KEY SCN7 KEY SCN8 KEY SCN9 KEY SCN10

KEY SCN0

KEY SCN1

KEY SCN2

KEY SCN3

KEY SCN4

KEY SCN5

KEY SCN6

KEY SCN7

KEY SCN8

KEY SCN9

KEY SCN10

J2 P2.0mm*11pin

4A

49

48

47

46

45

44

43

42

41

40

3A

39

38

37

36

35

34

33

32

31

30

2A

29

28

27

26

25

24

23

22

21

20

1A

19

18

17

16

15

14

13

12

11

10

0A

09

08

07

06

05

04

03

02

01

KEY RTN4

KEY RTN3

KEY RTN2

KEY RTN1

01 KEY RTN0

KEY LAYOUT

4A 49 48 47 46 45 44 43 42 41 40 3A 39 38 37 36 35 34 33 32 31 30 2A 29 28 27 26 25 24 23 22 21 20 1A 19 18 17 16 15 14 13 12 11 10 0A 09 08 07 06 05 04 03 02 01 01 Trouble shooting - All keys do not work at all. - - - Replace Main board. - Only a specific key does not work. Check the lead wire. Lead wire is broken - - - Replace Lead wire. Lead wire is not broken - - - Replace K/B unit. When it’s not broken, replace K/B unit.

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3-10. DRAWER CIRCUIT The solenoid for a drawer is activated using the signal P110 from the CPU. This signal is normally Low, and goes High to cause the drawer to run. When P110 is High, Q2 is on. Current flow through the transistor cause the collector to be held Low, near grand potential.

K

VDRW

D1 CN5

1SR154-400 A

1 2 3

B

Q2

4.7K

B3P-SHF-1AA

E

2SD986

*0.1uF_50V

DRW_ON

C57

DRW_ON

*0.1uF_50V

R105

C56

C

(1)

R108

10K PG

PG

Trouble shooting - Drawer remains opened. (Drawer does not close.) Check the voltage at point (1) DC +3.3V - - - Replace Main board. 0V - - - Replace the Drawer unit.

- Drawer remains closed. (Drawer does not open)

Check whether or not the drawer opens by emergency lever. If drawer opens - - - It should not be considered a mechanic problem. Check the voltage at point (1) If drawer does not open - - - It should be considered a mechanic problem. Replace the drawer unit.

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3-11. BUZZER CIRCUIT The buzzer circuit uses as its input signal P74 from the CPU. This normally Low signal and goes High on 2 conditions. First on an error tone, P74 goes Clocked until the error condition is cleared. For a key beep tone, P74 goes High and then returns to its Low state. This pulse is of extremely short duration.

VDRW

R190 4.7K

R189 BZ1 KPT-G1720-5V

C

22K

(1)

Q13 DTC143EKA

B

E

BUZZER

Trouble shooting - No buzzer sound when [clear] key is depressed. Check the voltage at point (1) DC +24V - - - Replace Main board. 0V - - - Check Power supply circuit. (P.9-11)

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3-12. BATTERY CIRCUIT VBB voltage is used by CPU, external RAM and FROM. It is supplied by dry battery at the time of back-up.

Battery specification Type : AA x 3pcs Voltage: 4.5V CAUTION; RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.

A

VCC3

D16 1SS355

K

R200 10K

R203 39

C

1 2

Q14 2SC2412K

B

R204 62

E

750

D19

(1) R201 *10K U13

R205

R202 0

A

D18 1SS355

*RB520S-30

VBB

D14 A

A K

K

D17 1SS355

*EC31QS06 K

A K

VBB

VSS

CN13

XC6215

CE

4

VIN

C140

2 1

3

VOUT

B2B-XH-A

1uF

C28 0.1uF

Trouble shooting - Check whether the batteries are supplied in the battery box. - Check the voltage of each battery. (It should be over 1.1V per battery.) It outputs less than 1.1V per battery (less than 3.3V with 3 batteries) - - - Replace the battery. It outputs over 1.1V per battery (over 3.3V with 3 batteries). - - - Check the voltage at point (1). - Check the voltage at point (1) It outputs almost same voltage as battery voltage - - - Replace Main Board. It outputs much less than the battery voltage or 0V - - - Replace Battery unit.

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3-13. EXTERNAL MEMORY 3-13-1. SRAM (BS62LV4006SCP-70) 512K bytes S-RAM used as an external RAM for PLU and Electric Journal and etc.

P00 through P07 are multiplex bus that consists of data bus (D0-D7). P20 through P27 are multiplex bus that consists of data bus (A0-A7). P30 through P37 are multiplex bus that consists of data bus (A8-A15). P40 is multiplex bus that consists of data bus (A16). P41 is multiplex bus that consists of data bus (A17). P42 is multiplex bus that consists of data bus (A18). P45 is used for chip select at RAM. P52 is used for Output Enable, P50 is used for Write Enable control. EXTERNAL MEMORY CIRCUIT

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 RAMCS# WR# RD#

U3 12 11 10 9 8 7 6 5 27 26 23 25 4 28 3 31 2 30 1 22 29 24

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17/CE2 A18/A17 CE WE OE

D0 D1 D2 D3 D4 D5 D6 D7

D0 D1 D2 D3 D4 D5 D6 D7

13 14 15 17 18 19 20 21

VBB VCC GND

32

C19

16

C79 *0.01uF

0.1uF

BS62LV4006SCP-70 C73 *100pF

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S-RAM PIN Configuration Refer to the specification. (attached data sheet)

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3-13-2. FROM (S29AL004D70TFI010) 512K bytes FROM is used as programming.

P00 through P07 are multiplex bus that consists of data bus (D0-D7). P20 through P27 are multiplex bus that consists of data bus (A0-A7). P30 through P37 are multiplex bus that consists of data bus (A8-A15). P40 is multiplex bus that consists of data bus (A16). P41 is multiplex bus that consists of data bus (A17). P42 is multiplex bus that consists of data bus (A18) P43 is multiplex bus that consists of data bus (A19) P47 is used for chip select at RAM. P52 is used for Output Enable, P50 is used for Write Enable control. EXTERNAL MEMORY CIRCUIT

U2 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19

45 25 24 23 22 21 20 19 18 8 7 6 5 4 3 2 1 48 17 16 9 10 13

WR# RD# ROM_CS# C70 *100pF

40

11 28 26 RESET#

12

D15/A-1 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 NC NC NC WE OE CE RESET S29AL004D70TFI010

ECR 7900 Service Manual

D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 RY/BY NC

D0 D1 D2 D3 D4 D5 D6 D7

29 31 33 35 38 40 42 44 30 32 34 36 39 41 43

VBB R92 10K FRDY

15 14 VBB

VCC VSS VSS BYTE

37 C111 27 *0.01uF 46 47

C17 0.1uF

R95 10K

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FROM PIN Configuration Refer to the specification. (attached data sheet)

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3-14. PRINTER CIRCUIT Thermal Head The thermal head of the printer consists of heat elements, and head drivers to drive the heat elements. Serial printing data input from the DAT IN pin is transferred to the shift register synchronously with the CLK signal, then stored in the latch register with the timing of the LATCH signal. Inputting the head activation signal activates heat elements in accordance with the printing data stored in the latch register. Each 144-dot block for LTPC235 are printed. Sensor This printer has Head-up sensor and Paper-end sensor. Both signals normally outputs Low, but it out puts High when Head-up or Paper-end. This High signal goes through Nor-gate and changed Low, then it is input into CPU (U1). Excitation Sequence As shown in Table 3-14-1, the printer feeds paper in the normal direction when the motor is excited in the order of step 1, step 2, step 3, step 4 step 1, step 2, ….by inputting the voltage signals in Figure 3-14-1.

Figure 3-14-1. Input Voltage Signals for the Sample Drive Circuit

Table 3-14-1. Excitation Sequence

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Motor and Thermal Head drive timing

Figure 3-14-2. 2-Division Printing Timing Chart

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PRINTER CIRCUIT

VPRN

R121 SHVP

15K_F

R132

C74

(1)

5.1K_F *470pF

10K 10K 10K

VCC5 VCC5

100 100

P_DST2# P_DST1#

EC9

R120

*100pF

*100pF

*100pF

C64

C65

0.1uF

R133 220

16K_F

CN6 P_TH

9 8 7 6 5 4 3 2 1

14

VCC5

R_HDUP

2

U5B 4

U5A 1 SN74LV14APWR

R89

10K

R141

47K

HS VPS

3

PS 7

R_PEND

47uF_16V

C4 VCC5

0.1uF

R_SHTH

VCC5

+ R125 R126

VCC3

10

TC74VHCT244FT

DAT_IN CLK LATCH#

*100pF

VCC3

C2

100 100 100

C63

(2)

1G 2G

R122 R123 R124

*100pF

1 19

18 16 14 12 9 7 5 3

1Y1 1Y2 1Y3 1Y4 2Y1 2Y2 2Y3 2Y4

C62

STB2# STB1#

VCC

STB2# STB1#

1A1 1A2 1A3 1A4 2A1 2A2 2A3 2A4

GND

U14 2 4 6 8 11 13 15 17

C61

0.1uF nDATA HCLK HLATCH#

nDATA HCLK HLATCH#

R85 R86 R87

20

C3

SN74LV14APWR

52147-0910

(3) VCC3

Motor +

C7

C75

0.1uF

470pF

CN7

VPRN

13 12 11 10 9 8 7 6 5 4 3 2 1

C5

Motor -

0.1uF U4 PH1 PH3 PH2 PH4

PH1 PH3 PH2 PH4

1 2 6 13 9 7 14

VCC VS1 IN1 VS2 IN2 VCONT IN3 OUT1 IN4 OUT2 GND1 OUT3 GND2 OUT4

4 11 8 3 5 12 10

0.1uF

C6 A /A /B B

52147-1310

LB1836M

Trouble shooting - Cannot print, or cannot Feed paper. Check voltage (AC +7.6V) at point (1). If it outputs properly - - - Replace Main board or printer. If it doesn’t output properly - - - Check Power supply circuit. (P.9-11) - Faded print, or run print. - - - Replace Main board or printer. - Cannot cancel Head-up sensor error. Check voltage at point (2). If DC+5.0V is properly output - - - Replace Main Board. If DC+5.0V is not properly output - - - Replace Printer. - Cannot cancel Paper-end sensor error. Check voltage at point (3). If DC+5.0V is properly output - - - Replace Main Board. If DC+5.0V is not properly output - - - Replace Printer. - Head-up sensor or Paper-end sensor does not work. nter.

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TH VDD CLK VP HS VPS PS

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- - - Replace Main board and pri

45

GND DST2# DST1# GND VP GND GND /A B A /B

3-15. INTERFACE CIRCUIT BCR I/F TXD2, RXD2, RTS2 and CTS2 are UART communication parts from the CPU (U1). U7 (MAX3232CPWR) is RS232C transceiver. The BCR power supply (+5V) is output by the BCR-ON signal from the CPU. USB I/F USB I/F is controlled by the M38K07M4L (U1). The serial I/F is transferred to USB I/F in this circuit. SD card I/F SD card I/F is controlled by the CPU (U1). When the data is written/read, VSD_EN goes High and VMEM is supplied to SD card.

VCC5

R138 S

1K R137

Q4

C

G

200 D

BCR_ON

2SJ377

Q5 DTC143EKA

B

VCC3 VCC5

20

E

C8 R186 *10K

VCC5

0.1uF

G A1 A2 A3 A4

Y1 Y2 Y3 Y4

GND

1 2 4 6 8

TXD1 RTS1#

VCC

U6A 18 16 14 12

CN8

U_TXD U_RTS# U_RXD U_CTS#

FB2 FB3 FB4 FB5

CTS1#

8

9

6

10

SN74LV14APWR U5E 11 12

SN74LV14APWR U5F 13

5

SN74LV14APWR

SN74LV14APWR VCC3

FB1

+R206

VCC3

10K

R1 100k

*100pF

*100pF

*100pF C69

0.1uF

C68

C14

C67

C12

MAX3232CPWR

*100pF

14 7 13 8 16 2 6 15

0.1uF

T1OUT T2OUT R1IN R2IN VCC V+ VGND

C13

0.1uF

0.1uF

HAT1089C-EL-E D

T1IN T2IN R1OUT R2OUT C1+ C1C2+ C2-

R127 R128 R129 R130

CN10 1 2 3 4 5 6

100 100 100 100 C15

RS232C

B6B-P

0.1uF

VMEM

G

S

+

11 10 12 9 1 3 4 5

C11

C10

10K

Q1

VCC3

EC1

R91

R90

10K

TXD2 RTS2# RXD2 CTS2#

0(3216)

U7 TXD2 RTS2# RXD2 CTS2#

C66

R188 *10K

0.1uF

R187 *10K

USB

52147C9 0.1uF

R26 R142 R27 R143

10 U5C

U5D RXD1

1 2 3 4 5 6 7 8

100K *100K 100K *100K

TC74VHCT244FT

0(2012) 0(2012) 0(2012) 0(2012)

10uF_16V

R28 51

VMEM

VMEM

(1)

100k

100k

100k

VSD_EN

SD_CS# SD_DO SD_CK SD_DI

R43

33

R44

33

C30

CN2

R14

33 33

R13

R41 R42

R12

C1 0.1uF

VCC3

*10pF

SD_CARD SD_WP

46

1 2 3 4 5 6 7 8 9 10

SD card

R45 R46

10K

10K

R82

R83

A2004WV10-10

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Trouble shooting - Scanner head lamp does not light up when power ON. Check the voltage (AC +5.0V) at point (1). If it outputs properly - - - Replace the Harness ass’y. If it doesn’t output properly - - - Replace the Main board. - Scanner head lamp lights up but the scanner does not read a barcode. - - - Replace the Harness. If the condition is not changed, replace the Main board. - Cannot work the USB port - - - Replace USB I/F Board. - Cannot write or read the data for SD card Check the voltage (DC +3.0V) at point (2). If it outputs properly - - - Replace Main board or SD card unit. If it doesn’t output properly - - - Replace Main board.

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4. DIAGNOSTIC SOFTWARE 4-1. DIAGNOSTIC CHECK & FINISHED GOODS CHECK Diagnostic Software will check whether the machine works properly or not. It is already built in the machine and is always ready to boot this software by the following instructions. It is also useful to check after repairing the machine.

Note) Once you start up the diagnostic software, you should operate all the checkup items. In other words, it is impossible to check only Keyboard unit, Display unit, or Drawer unit etc. Please make sure you should complete the diagnostic software and it means OK when no error occurs through the checkup.

DIAGNOSTIC CHECK LIST

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After repairing the machine, go through the finished goods check list below. It means OK when no error occurs through the checkup.

FINISHED GOODS CHECK LIST

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4-2. SOFTWARE VERSION CHECK Through the diagnostic check, it shows the software version in the beginning of the check. However, it is possible to check only the software version without diagnostic check.

SOFTWARE VERSION CHECK

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Note) The latest version of the ER7900 is “ Ver 1.01”.

Appendix : jig for RS232C PORT Testing jig = Loop back connector for barcode scanner

D-sub 9 pin

1

2

3

4

5

6

7

8

9

1kΩ

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5. INSTALLING SOFTWARE In order to install software, start up “M32CPU series ECR_LOADER”. The down load is available via the USB interface. Before doing the following procedure, the PC has to install the USB-COM driver referring to “6 USB driver install”. Please follow the instruction below in numeric order.

PC side 1) First of all, please check the PC COM Port number. Right click on [My Computer], and then Click [Properties].

2) Click [Device Manager].

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3) Check COM Port number. Note）If you use usb-com conversion, there might be shown “USB Serial Port (COMn)”. After you checked the COM Port number, please close the “device manager”.

4) Execute Up_Loader.

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You can find the icon as shown.

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5) Set the COM Port number using [Com set] button.

Set the COM Port number which you checked at 3). Click [OK].

ECR side 6) Unplug the power and remove the battery. 7) Connect the cable to PC.

PC side 8) Click [OK].

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9) Click [Boot] button.

10) Up_Loader is waiting for the ECR start-up.

ECR side 11) Turn on the power with depressing [1] and [9] of ten key together. When the connection (to PC) is confirmed, it beeps twice. (“Pi Pi”) 12) If it doesn’t perform properly at this stage, ECR side might have started up the LOADER already. Click [STOP] button first, and then click [ENQ] button to confirm the condition of the ECR. If the LOADER is already started up, go ahead to .

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PC side 13) When it’s connected to ECR, it shows [Boot OK].

Click [EEPROM Erase] button.

14) When it successfully done the deletion, it shows [OK].

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15) Click [UP LOAD] button.

Select the file you wish to download.

Click [Open].

16) It shows a status for transmitting.

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17) It shows [Up Load OK]

18) Click [Ver] button.

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19) It shows the version which was transmitted.

20) Click [RUN] button.

ECR will be started-up by the software loaded just now. Now that the machine has installed new software, it is required to check its functions are properly installed or not. Please go back to section 3, “DIAGNOSTIC SOFTWARE” to check the machine.

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5-1.USB driver install 1. Preparation This driver is USB-COM conversion driver. When the driver is installed, virtual COM(RS232C) port is made on the PC. 2.Support OS Microsoft Windows 2000,Windows XP 3.Driver file Win2kcom.inf

Note. WindowsXP uses the same file.

4. How to install the driver Note. The sample screens use Windows2000 1) Connect the device’s AC plug to the consent. And turn on the power supply of the PC. 2) Connect the USB cable to the PC. Device is detected.

3) Click the “Next”.

3) Click the “Next”.

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4) Click the “Next”.

5) Specify the place of the driver file. Please click ”Next” after

checking ”Specify a location”.

6) The folder selection screen is displayed. Click the ”Browse”.

6) The folder selection screen is displayed. Click the ”Browse”.

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7) Please open the folder that is preserved Win2kcom.inf, and click "Open" after selecting the file.

8) Click the “OK”.

8) Click the “OK”.

9) Click the “Next”.

9) Click the “Next”.

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10) The driver's installation is completed by this operation. Please click "Finish".

11) Next, please confirm whether the driver was normally installed. Please right-click at the My computer, and click “Properties".

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12) Click the “HardWare tab”.

13) Click the ”Device Manager”.

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14) Please confirm the display of "USB COM test(COMn)". COM7 was made in the example of the following.

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5.DeviceClass specification Comply with USB device class’s communication device class Abstract Control Model spec. Please refer to “USB Class Definition for Communication Devices Version 1.1” of the USB society issue for a detailed specification. 6. Restriction of use This driver emulates the RS232C operation by the USB connection. The following usage restrictions are generated under the WindowsAPI environment. 1) COMSTAT structure Neither fXoffHold nor fDsrHold are detected automatically. Please note that this function cannot be used by the application. Please correspond by the following content when using it. #1 fXoffHold…Please examine receive data from the device by the application, and judge the Xon/Xoff character directly. #2 fDsrHold・・・Please use GetCommModemStatus API.Sample is follows. //C language sample source DWORD ModemStat; GetCommModemStatus(hCom, &ModemStat); if(ModemStat & MS_DSR_ON) { //DSR signal is on.(Device is not busy) } else { //DSR signal is off.(Device is busy) } 2) Virtual COM(RS232C) port Please do not turn off the power supply of the device and do not pull out the USB cable while having opened virtual COM port by the application. After that, the port might not be able to be used until the personal computer is rebooted.

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6. ASSEMBLY INSTRUCTION 6-1. TOP CASE UNIT KEY CAP [1X1]

RUNNER GATE POSITION ON TOP SIDE

(1) FIX KEY TOP SHEET TO KEY CAP THEN FIX TO BASE TOP KEY.

KEY CAP [1X2]

RUNNER GATE POSITION ON LEFT SIDE KEY TOP SHEET

BASE TOP KEY

KEY FRAME

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SCREW

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(2) FIX K/B PWB UNIT TO KEY FRAME WITH FLAT. IT MUST BE ON FITTING BOSSES POSITION THEN FASTENING 15PCS SCREW.

73

(3) 1] FIX 2PCS PAPER ROLLER TO TOP CASE. [AS SHOWN ON THE UPPER PICTURE ] 2] SLOT MOTOR SET PIECE TO TOP CASE. [AS SHOWN ON THE BELOW PICTURE ]

TTOP CASE

PAPER ROLLER

(4) FIX 2PCS BATTERY CONTACT TO TOP CASE. [LOCATION AS SHOWN ON PICTURE.]

TOP CASE

BATTERY CONTACT [EAM-3363] BATTERY CONTACT [EAM-3362]

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(5) FIX KEY FRAME TO TOP CASE PRESS UNTIL IS LOCKED.

TOP CASE

KEY TOP

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(6)FASTENING 6PCS SCREW, KEY FRAME TO TOP CASE.

SCREW

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LCD COVER

(7) 1]APPEARANCE CHECK LCD COVER. 2] FIX LCD COVER TO TOP CASE. [AS SHOWN ON PICTURE.]

TOP CASE

(8) FIX LCD COVER TO TOP CASE BY FASTENING 4PCS SCREW. 1

2

3

SCREW

4

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PLATEN ARM

(9) FIX 2PCS PLATEN SPRING TO PLATEN ARM THEN FIX TO TOP CASE.

PLATEN SPRING

(10) FIX LCD MODULE UNIT TO TOP CASE. NOTE: The display unit is described in the next section (6-2).

LCD MODULE UNIT

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PRESS UNITIL IS LOCKED

PRESS UNITIL IS LOCKED

CABLE SLOT HERE

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R/DISPLAY UNIT

(11) 1] FIX R/DISPLAY UNIT TO TOP CASE. 2] CHECK AND CLEAN REMOTE FILTER AND DISPLAY TUBE BY USE METHANOL. 3] FIX REMOTE FILTER TO R/DISPLAY CASE. [AS SHOWN ON PICTURE.]

REMOTE FILTER

AMOU

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(12) 1]CLIP FERRITE CLAMP TO HARNESS ASSY THEN TURN ONE ROUND TO FERRITE 2] CLIP HARNESS ASSY TO CORD CLAMP. [AS SHOWN ON PICTURE.]

30mm

FERRITE [1 TURN]

CLAMP

CLIP HARNESS ASSY IN THIS CORD CLAMP

TOP CASE UNIT

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6-2. Display unit ASSY (1) INSERT HARNESS ASSY LCD MODULE UNIT.

LCD MIRROR NON-GLARE SURFACE (TAK SILAU)

HARNESS ASSY

LCD MODULE UNIT

SOLDER LED

(2) SOLDER HARNESS ASSY TO LCD MODULE UNIT.

LCD MODULE UNIT

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(3) 1] SLOT LCD MODULE HARNESS ASSY TO LCD REAR CASE. 2] FIX LCD MODULE TO LCD REAR CASE. 3] FIX LCD FRONT CASE TO LCD REAR CASE AND PREES UNTIL IS LOCKED.

LCD REAR

CASE

LCD MODULE

LCD FRONT

CASE

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(4) CLIP FERRITE CLAMP TO HARNESS ASSY AND TURN ONE ROUND TO FERRITE CLAMP.

HARNESS ASSY

FERRITE CLAMP [1 TURN]

30mm

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6-3. Bottom case unit ASSY

BOTTOM CASE

(1) 1]APPEARANCE CHECK THE BOTTOM CASE. 2]STICK CORD CLAMP TO BOTTOM CASE. [LOCATION AS SHOWN ON PICTURE.]

TAB SIDE

CORD CLAMP

Y108540-8

ECR 7900 Service Manual

83

HARNESS ASSY SLOT HERE

(2) 1] SLOT HARNESS ASSY TO BOTTOM CASE. [FOLLOW THE PICTURE AS SHOWN ON FIGURE.] 2] TIE TOGETHER HARNESS ASSY WITH BOTTOM CASE BY USE INSULOCK TIE. [AS SHOWN ON PICTURE.]

HARNESS ASSY [CA24-903A] BOTTOM CASE

INSULOCK TIE

130mm

84

ECR 7900 Service Manual

Y108540-8

(4) FIX TRANSFORMER UNIT TO DRAWER UNIT BY FASTENING 2PCS SCREW.

AC CORD SLOT HERE

SCREW

Y108540-8

ECR 7900 Service Manual

85

AC CORD PUT LIKE THIS

(5) 1] FIX AC CORD TO BOTTOM CASE. 2] FIX INLET SET PIECE TO BOTTOM CASE BY FASTEN 2PCS SCREW. [AS SHOWN ON PICTURE]

BOTTOM CASE

INLET SET PIECE

SCREW

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ECR 7900 Service Manual

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BOTTOM CASE

(6) 1] FIX FUSE HOLDER PWB TO BOTTOM CASE BY FASTENING 1PC SCREW. [AS ON PICTURE 1.] 2] SLOT FUSE TO FUSE HOLDER. [AS ON PICTURE 2.] 3] FIX FUSE CAP TO FUSE HOLDER. [AS ON PICTURE 3.]

PICTURE 1

SCREW

PICTURE 2

PICTURE 3

FUSE

FUSE CAP

(7) FASTEN 8PCS SCREW, MAIN PWB TO BOTTOM CASE. MAIN PWB

SCREW

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87

(8) 1] INSERT DRAWER CONNECTOR AND TRANSFORMER CONNECTOR TO MAIN PWB UNIT. [AS ON PICTURE ] 2] INSERT USB JUMPER LEAD AND I/F/PLATE CABLE TO MAIN PWB.

MAIN PWB

TRANSFORMER HARNESS

DRAWER HARNESSINSER

INSERT TO [CN12]

T TO [CN5]

FIRST PIN

CABLE FROM I/F/PLATE INSERT

TO [CN10]

JUMPER LEAD FROM USB BOARD

INSERT TO [CN8]

PLUG HOLE COVER SCREW

(9)FIX PRINTER EARTH WIRE AND DRAWER EARTH WIRE TO UPPER PLATE THEN FASTENING 1PC SCREW.

EARTH WIRE FROMPRINTE

R HEAD

EARTH WIRE FROM HARNESS ASSY

[CA24-903A]

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ECR 7900 Service Manual

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(10) INSERT DISPLAY HARNESS, BATTERY BOX HARNESS AND PRINTER PWB JUMPER LEAD TO MAIN PWB. [LOCATION AS SHOWN ON PICTURE.]

FIRST PIN

PRINTER PWB JUMPER LEAD [9pin] INSERT TO [CN6]

PRINTER PWB JUMPER LEAD [13pin] INSERT TO [CN7]

FRONT DISPLAY HARNESS INSERT TO [CN9] BATTERY BOX HARNESS INSERT TO [CN13]

Y108540-8

ECR 7900 Service Manual

89

(11) INSERT LCD MODULE HARNESS, SD CARD HARNESS AND K/B JUMPER LEAD TO MAIN PWB. [LOCATION AS SHOWN ON PICTURE.]

LCD MODULE HARNESS INSERT TO [CN11]

SD CARD HARNESS INSERT TO [CN2] FIRST PIN K/B JUMPER LEAD INSERT TO [CN1]

[10pin] K/B JUMPER LEAD INSERT TO [CN3] [11pin]

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ECR 7900 Service Manual

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(12) FIX SEMI SET TO BOTTOM CASE SEMI SET

(13) FASTEN 2PCS SCREW, TOP CASE TO BOTTOM CASE. SCREW

Y108540-8

ECR 7900 Service Manual

91

(14) FIX KEY FRAME TO TOP CASE PRESS UNTIL IS LOCKED.

DEPOSIT DRAWER

(15) COPLETE AND FUNCTION TEST.

BATTERY

WINDING REEL ASSY UNIT

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ECR 7900 Service Manual

Y108540-8

8. CIRCUIT DIAGRAM 2

3

P_PS SVBT R_SHTH SHVP

P_PS SVBT R_SHTH SHVP

C2

C1 *10K *10K *10K *10K

R7 R8 R9 R1 0 R1 1 R1 2 R1 3 R1 4

KR[0..7]

D0 D1 D2 D3 D4 D5 D6 D7

D0 D1 D2 D3 D4 D5 D6 D7

CNVSS = Vss BYTE = "H" KS8 FMP_CNVSS

30pF 32.768KHz

10K *10K *10K

R62

*10K

0

9.83MHz(CSTCE)

PF#

BCR_ON FRDY

33 33 33 33 R2 2 R2 3 R2 4 R2 5

33 pF 33 pF 33 pF 33 pF 33 pF 33 pF 33 pF 33 pF 33 33 33 33 R1 8 R1 9 R2 0 R2 1

0.1 uF_2 5V

C5 C6 C7 C8 C9 C1 0 C1 1 C1 2 33 33 33 33 33 33 33 33

A0 A1 A2 A3 A4 A5 A6 A7

EC1 10 uF_1 6V

14 4 14 3 14 2 14 1 14 0 13 9 13 8 13 7 13 6 13 5 13 4 13 3 13 2 13 1 13 0 12 9 12 8 12 7 12 6 12 5 12 4 12 3 12 2 12 1 12 0 11 9 11 8 11 7 11 6 11 5 11 4 11 3 11 2 11 1 11 0 10 9 R7 8 R7 9

RESET#

12

R52

33

A8

D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 RY/BY NC

29 31 33 35 38 40 42 44 30 32 34 36 39 41 43

D0 D1 D2 D3 D4 D5 D6 D7 VBB R17 10K

15

FRDY

14 VBB

VCC

WE OE CE

VSS VSS

RESET

BYTE

37 C13 27 46

0.1uF_25V

47 R39

MBM29F400BC-70PFTN

10K

Flash Memory VBB R28

KS0 KS1 KS2 KS3 KS4

C3 4

D

C

R56 R58 R60 R61 R63 R64 R66 R67 R68

33 33 33 33 33 33 33 33 33

A9 A10 A11 A12 A13 A14 A15 A16 A17

R70

33

A18

R203 33

A19

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A18 A17

*0

0

R202

U3 12 11 10 9 8 7 6 5 27 26 23 25 4 28 3 31 2 30 1 22 29 24

RAMCS# WR# RD#

TP 1 BCLK

*10K 10K 10K *10K

0.1 uF_2 5V

R74 R75 R76 R77

1uF_10 V

*10K *10K *10K C4 1

10 00pF

B

R71 R72 R73

C4 2

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

LCD_RST# BKL_ON BUZZER C1 10

LCD_RST# BKL_ON BUZZER

IO2

CR1

R55 R57 R59

*10 0K

R65

R6 9

IO1

CPU_RST#

G

PF#

VBB

0

11 28 26

*10 K

R54

15pF

BCR_ON

R53 *100K

R44 R45 R46 R47 R48 R49 R50 R51

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17/CE2 A18/A17 CE WE OE

D0 D1 D2 D3 D4 D5 D6 D7

13 14 15 17 18 19 20 21

D0 D1 D2 D3 D4 D5 D6 D7

VBB VCC GND

32 16

C26 1uF_10V

C27 0.1uF_25V

BS62LV4007SC-70

S-RAM (Program & PLU)

A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

C109 C17 C18 C19 C20 C21 C22 C23 C24 C25 C28 C29 C30 C31 C32 C33 C36 C37 C39 C40

33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF 33pF

B

A[0..19]

A[0..19]

A0

KS5 KS6 KS7 KS8

R8 0

C15

CPU

10 K 10 K

* Si ngle-Chip. Mode * 8- bit Data-Bus

WR# RD# ROMCS#

D15/A-1 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 NC/A18 NC NC NC

C3 8 *10 0pF

10K

108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73

45 25 24 23 22 21 20 19 18 8 7 6 5 4 3 2 1 48 17 16 9 10 13

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19

C1 4 *10 0pF

10K

P11/D9 P12/D10 P13/D11 P14/D12 P15/D13 P16/D14 P17/D15 P20/A0 P21/A1 P22/A2 P23/A3 P24/A4 P25/A5 P26/A6 P27/A7 Vss P30/A8 Vcc2 P120 P121 P122 P123 P124 P31/A9 P32/A10 P33/A11 P34/A12 P35/A13 P36/A14 P37/A15 P40/A16 P41/A17 Vss P42/A18 Vcc2 P43/A19

*10K *10K *10K *10K *10K *10K *10K *10K

1uF_10 V

R43

P96 P95 P94 P93 P92 P91 P90 P146 P145 P144 P143 P142 P141 P140 BYTE CNVSS P87/XCIN P86/XCOUT RESET XOUT Vss XIN Vcc1 P85/NMI P84 P83 P82/INT0 P81 P80/TA4OUT P77 P76 P75 P74 P73 P72 P71/RxD2

R26 R27 R29 R30 R31 R32 R34 R36

+

0.1 uF_2 5V C3 5

VBB

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

P7 0/TxD2 P6 7 Vcc1 P6 6 Vss P6 5 P6 4 P6 3 P6 2 P6 1 P6 0 P1 37 P1 36 P1 35 P1 34 P5 7/RDY P5 6/ALE P5 5/HO LD P5 4/HO LDA P1 33 Vss P1 32 Vcc2 P1 31 P1 30 P5 3/BCLK P5 2/RD P5 1/BHE P5 0/WR P1 27 P1 26 P1 25 P4 7/CS 0 P4 6/CS 1 P4 5/CS 2 P4 4/A20

R42

VBB

P9 7 AV cc VREF P1 00/AN0 AV ss P1 01/AN1 P1 02/AN2 P1 03/AN3 P1 04 P1 05 P1 06 P1 07 Vcc1 P1 50/IS TxD0 Vss P1 51/IS CLK0 P1 52 P1 53 P1 54 P1 55 P1 56 P1 57 P0 0/D0 P0 1/D1 P0 2/D2 P0 3/D3 P1 10/IS TXD1 P1 11/IS CLK1 P1 12 P1 13 P1 14 P0 4/D4 P0 5/D5 P0 6/D6 P0 7/D7 P1 0/D8

*10K *10K *10K *10K *10K *10K

C

C16

1uF_10 V

U2 M30842MC-054GP R33 R35 R37 R38 R40 R41

X1

C4

C3 RXD1 TXD1 CTS1# RTS1# SVCC_ON HDATA HLATCH# HCLK

D[0..7]

U1

VBB

RXD1 TXD1 CTS1# RTS1# SVCC_ON HDATA HLATCH# HCLK

8

D[0..7] R5 R6 R15 R16

KR[0..7]

7

VBB 0.1 uF_2 5V

VBB KR7 KR6 KR5 KR4 KR3 KR2 KR1 KR0

D

6

*10K *10K *10K *10K

DRW_ON

DRW_ON

5

10 K 10 K 10 K 10 K 10 K 10 K 10 K 10 K

R1 R2 R3 R4

4

0.1 uF_2 5V

1

A0

VBB

VBB

10 K

10 K

10 K

R8 4

R8 5

*10 0pF

R8 3

C4 4

10 K R8 2

LCDCS# RD# WR#

TP2

CON1

*0.1uF_25V

GND

R86

CONNECT_PATTERN U4 *74LV1G08

VBB

R87 0

3

VBB

VBB

CPU_RST# C111

0.01uF

+

+

+

A

* mark is unmounted parts.

10 uF_1 6V

4 2

EC4

1

*HIF3FC-10PA-2.54DSA

10 uF_1 6V

*10K

EC2

FMP_CNVSS

A

C45 5

1 2 3 4 5 6 7 8 9 10

KS[0..8]

2 1 CN1 *HEADER 2P

VBB CN2

*10 0pF

SCS# STXD SRXD SCLK SBUSY EPM#

C4 3

LCDCS# RAMCS# ROMCS# RD# WR#

10 K

M_B M_A M_ENA

R8 1

KS[0..8] VBB

EC3

M_B M_A M_ENA

VFD_TXD VFD_CLK VFD_CS0# HVPSW WIND_ON STB2# STB1#

10 uF_1 6V

VFD_TXD VFD_CLK VFD_CS0# HVPSW WIND_ON STB2# STB1#

CPU F-MEM Write Port RESET#

1

Y108540-8

RESET#

RESET#

2

ECR 7900 Service Manual

3

4

5

93

6

7

8

5

6

VCC

D[0..7]

*

K

D1 0A D1 1 A D1 2A D1 3 A D1 4A

A

A

A

A

*

CN3 FB1 FB2

0.1uF_25V

U5

DIR G

R102 R103 R104 R105 R106 R107 R108 R109

33 33 33 33 33 33 33 33

10 0pF 10 0pF 10 0pF 10 0pF 10 0pF 10 0pF

10

10 0pF 10 0pF 10 0pF 10 0pF 10 0pF 10 0pF 10 0pF 10 0pF

74LV245A

*1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5

0

18 17 16 15 14 13 12 11

EC23

+

K

1

B1 B2 B3 B4 B5 B6 B7 B8

K *1S S35 5 *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5

1 19

VCC

A1 A2 A3 A4 A5 A6 A7 A8

K

2 3 4 5 6 7 8 9

D0 D1 D2 D3 D4 D5 D6 D7

EC5

R199

*

D2 4 A A D2 5 D2 6 A A D2 7 D2 8 A

A A

A

A

A

A

A

D1 5 D1 6 D1 7 D1 8 D1 9 D2 0 D2 1 D2 2

C61 20

A

C5 5 C5 6 C5 7 C5 8 C5 9 C6 0

C4 7 C4 8 C4 9 C5 0 C5 1 C5 2 C5 3 C5 4 VCC

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

8x2 Box- Header (2.54mm Pitch)

9x2 Box- Header (2.54mm Pitch)

EC22

+

+

10uF_16V

100uF_16V 10uF_16V

C

SBY321611T-320Y-S SBY321611T-320Y-S

LC_C_D# LC_RD# LC_RST# LC_WR# LC_D0 LC_D1 LC_D2 LC_D3 LC_D4 LC_D5 LC_D6 LC_D7 LC_CE# LC_LEDA

GND

D[0..7]

20

C46

LCD Module Interface VCC

*

D1 D2 D3 D4 D5 D6 D7 D8

VCC

D

*1S S35 5 K *1S S35 5 *1S S35 5 K *1S S35 5 K *1S S35 5

K *1S S35 5 *1S S35 5 K *1S S35 5 *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5

*10 k *10 k *10 k *10 k *10 k R9 7 R9 8 R9 9 R1 00 R1 01

K

10 k 10 k 10 k 10 k 10 k 10 k 10 k 10 k R8 8 R8 9 R9 0 R9 1 R9 2 R9 3 R9 4 R9 5

D

VCC

K

VCC

8

7

A

VCC

A

4

A

3

K

2

A

1

CN13 1

*

C

TAB_TERMINAL

0.1uF_25V

1 19

IMAGE ADDRESS

VCC

C6 2

DISPLAY DATA

G1 G2

Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8

18 17 16 15 14 13 12 11

R110 R111 R112 R113 R114

33 33 33 33 33

74LV541A 10

200002H 3FFFFFH

CONTROL DATA

A1 A2 A3 A4 A5 A6 A7 A8

VCC E

R115

TP17 VBL

Q6 2SA1036K C

B

200001H

*10 00pF

200000H

2 3 4 5 6 7 8 9

A0 RD# LCD_RST# WR# LCDCS#

GND

U6 A0 RD# LCD_RST# WR# LCDCS#

LCD Back-Light Power (+5V)

10k R187 2k

VCC

-Vpw

EC6

B

+

*10 K

*10 K

*10 K

Q7 DTC143EKA

K*1S S35 5

B

BKL_ON

VCC

*

*

VF1 VF2

10uF_16V FB3

E

BKL_ON

K*1S S35 5

B

K*1S S35 5

C

VCC

CN4

R1 19

R1 18

R1 17

Remote Display Interface

SBY321611T-320Y-S 1 2 3 4 5 6 7 8

*10 00pF

*10 00pF

*

*10 00pF

RD_CS# RD_DATA RD_CLK K*1S S35 5

100 100 100

D3 1 A

R120 R121 R122

D3 0 A

VFD_CS0# VFD_TXD VFD_CLK

K*1S S35 5

VFD_CS0# VFD_TXD VFD_CLK

K*1S S35 5

D2 9 A

R116 1k

*

B8B-PH- K-S FB4

EC21

+ A

C6 5

C6 4

C6 3

A

* mark is unmounted parts.

1

94

D3 4 A

10 uF_1 6V

+ EC12

EC9

+

10uF_50V

VCC 10 uF_1 6V

VCC 10 uF_1 6V

+ EC8

EC7

+

VCC 10 uF_1 6V

VCC

D3 3 A

D3 2 A

SBY321611T-320Y-S

2

ECR 7900 Service Manual

3

4

Y108540-8

5

6

7

8

1

Y108540-8 2

ECR 7900 Service Manual TxD1 RTS1# RxD1 CTS1#

3 TxD1 RTS1# RxD1 CTS1#

4

95 11 10 12 9 1 3 4 5 T1IN T2IN R1OUT R2OUT C1+ C1C2+ C2T1OUT T2OUT R1IN R2IN VCC V+ VGND

MAX3232CPW R

A

5

14 7 13 8 16 2 6 15

6 33 0pF

C84 0.1uF_25V

33 0pF

VCC

C8 8

Q2 DTC143EKA

33 0pF

B

C8 7

BCR_ON 200

33 0pF

R158

C8 6

BCR_ON A

A

A

A

A

A

A

A

K *1S S35 5 *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K

D5 3 D5 4A D5 5 D5 6A D5 7 D5 8A D5 9 D6 0A

A

A

A

A

K *1S S35 5 *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K

A

A

A

A

A

A

K

K

K

K

K

*1S S35 5 K *1S S35 5 *1S S35 5 K *1S S35 5 *1S S35 5 K *1S S35 5 *1S S35 5 K *1S S35 5 *1S S35 5

D3 5A D3 6 D3 7A D3 8 D3 9A D4 0 D4 1A D4 2 D4 3A

A

A

A

A

K

*1S S35 5 K *1S S35 5 *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5 K *1S S35 5

K

5

C8 5

D6 1 D6 2 D6 3 D6 4 D6 5 D6 6 D6 7 D6 8

KR[0..7]

0.1 uF_2 5V

*33 0pF 33 0pF 33 0pF 33 0pF 33 0pF 33 0pF 33 0pF 33 0pF

R149 R150 R151 R152 R153 R154 R155 R156

*

C9 0

S

C7 5 C7 6 C7 7 C7 8 C7 9 C8 0 C8 1 C8 2

KR0 KR1 KR2 KR3 KR4 KR5 KR6 KR7 A

A

KS[0..8]

D

B C

C A

VCC 33 0pF 33 0pF 33 0pF 33 0pF 33 0pF 33 0pF 33 0pF 33 0pF 33 0pF

10 k 10 k 10 k 10 k 10 k 10 k 10 k 10 k 10 k

VCC

0.1 uF_2 5V

E

KR[0..7] R132 R133 R134 R135 R136 R137 R138 R139 R140

D4 4 D4 5 D4 6 D4 7 D4 8 D4 9 D5 0 D5 1 D5 2

C6 6 C6 7 C6 8 C6 9 C7 0 C7 1 C7 2 C7 3 C7 4

KS0 KS1 KS2 KS3 KS4 KS5 KS6 KS7 KS8

0.1 uF_2 5V

R1 23 R1 24 R1 25 R1 26 R1 27 R1 28 R1 29 R1 30 R1 31

D 4

C9 2

C9 1

KS[0..8] 3

0.1 uF_2 5V

10 k 10 k

10 k 10 k 10 k 10 k 10 k 10 k 10 k 10 k

2

C8 9

R1 63 R1 64

R1 41 R1 42 R1 43 R1 44 R1 45 R1 46 R1 47 R1 48

1 6 7

0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 *0

C83 0.1uF_25V

R159 R160 R161 R162

7

8

VCC

* CN5 D

KSCAN0 KSCAN1 KSCAN2 KSCAN3 KSCAN4 KSCAN5 KSCAN6 KSCAN7 KSCAN8 9 8 7 6 5 4 3 2 1

KRETURN0 KRETURN1 KRETURN2 KRETURN3 KRETURN4 KRETURN5 KRETURN6 KRETURN7

*

R157 1k G Q1 2SJ377 FB5

SBY321611T-320Y-S

Key Board

B7B-PH- K-S

VCC

* CN6 1 2 3 4 5 6 7 8 9 10 C

B9B-PH- K-S

TP3

GND

VCC

CN7

BCR/PC Interface

1 2 3 4 5 6

(RS-232C) B

RS232C #1

B6P-SHF-1AA

U7 100 100 100 100

FB6 SBY321611T-320Y-S GN1

R165

*1M_1/4W

GND-SCREW _HOLE

FG

* mark is unmounted parts. A

8

1

2

3

4

VCC

5

6

8

7

VPRN

D

D VPRN

U8

M_ENA

M_A

1 2 3 4 5 6 7

M_ENA

M_A

VCC GND ENA1 ENA2 OUT1 OUT3 VS1 VS2 OUT2 OUT4 IN1 IN2 GND VCNT

14 13 12 11 10 9 8

R166 9.1k_F

LB1838M

M_B

C94 VCC

47uF_16V

47uF_16V 0.1uF_25V

*100pF

STB1# STB2#

STB1# STB2#

R171 R172

HCLK HDATA

HCLK HDATA

R173 R174

PRINTER(M-T53 II) I/F

KD7 3

KD7 2

PG A B# B A#

1S S355A

KD7 0

KD7 1

1S S355A

1S S355A

KD6 9 1S S355A

10 k 10 k

R170

1S S355A

PG

HLATCH#

HLATCH#

R167 10k_F

EC10

+

C95 0.1uF_25V

R1 68 R1 69

VCC

C93

+ EC11

SHVP

SHVP M_B

VCC

VPRN VPRN P_LAT# P_TM GND_P GND_P P_STB1# VCC P_STB2# GND_P GND_P P_CLK P_DATA VPRN VPRN

N2012ZA102

N2012ZA102 N2012ZA102

C

KD7 8

KD7 7

KD7 6

KD7 5

KD7 4

R200

K

10k R201 2k

R204

1uF_10V

R175 220

PRINTER

27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

VH VH

VH VH

(OPEN)

HLW27S-2C7

C

M-T53 II

0_1W

C

R177 K

0 VCC

D8 0

K

0.01uF

Q11 DTC143EKA

PG

E

A

1S S355

B

1S S355

C101

C102 0.1uF_25V

P_PS

A

P_PS

D8 2

R178 1k

1S S355

K

A

D8 1

SVCC SLED P_PEND

C112

1S S355

D7 9 A

R_SHTH

C 2SA1036K Q10

VCC

R176 10k_F

R_SHTH

*0

B

VCC

1S S355A

1S S355A

1S S355A

1S S355A

1S S355A

33 0pF

33 0pF

33 0pF

33 0pF

R96 E

C1 00

C9 9

C9 8

C9 7

C9 6

33 0pF

N2012ZA102 N2012ZA102

CN8

R179 1k

SVCC_ON

SVCC_ON

B

WIND MOTOR I/F

VPRN R180 33_1W

B

CN9 1 2 3

C103 0.1uF_50V

C

B3B-XH

WIND_ON

R181 4.7k

B

Q3 2SD1817

R182 *0

E

WIND_ON

VPRN

+

R183 10k

VPRN EC18

10uF_50V PG

+

EC19 10uF_50V PG

PG

A

1

96

A

* mark is unmounted parts.

2

ECR 7900 Service Manual

3

4

Y108540-8

5

6

7

8

1

2

3

HVPSW

4

5

HVPSW

6

VCC

TP4 VBB

Q4 2SA1036K

TP5 +24V

E

VBB

Battery Back-up Power

C

+24V (+32V)

Printer Power (+7.5V)

10uF_50V

CN10

+

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

ZD1 RD3.3EB1

D83 RB520S- 30

R184 2K

A

VPRN EC15

100uF_16V

+

Logic Power (+5.0V)

R205 C Q9

EC17

VFD Drive Power (-28V)

C113

680K_F

1000pF

E R191 62

C114

CN11

1uF_10V

+

R206

SVBT

2SC2412K

TP8 GND

100uF_16V

B15B-PH-K-S

SVBT 100K_F

R190 750 B

R185 *0_1W

VCC EC16

R189 39

EC20 33uF_16V

PG

TP7 VCC

+

K

TP6 VPRN

D

EC13 33uF_16V

B

EC14

A

+

+ K

D

8

7

2 1

TP9 -Vpw

Battery (AA[1.5V] x 3)

B2B-XH- A

*10uF_50V -Vpw TP10 VF1 VF1 TP11 VF2

VFD Filament Power (3.9V P-P) C

C VF2

+24V F1

CN12

JUMPER

D85 1SR154-400

C104 0.1uF_25V

5.6K_F R198

C106

1.2K_F

1000pF

NC IN NC GND

NC VCC OUT C

R192 1K

C A

U10

Drawer Interface

B3P-SHF-1AA

R186

8 7 6 5

PF#

DRW_ON

PF#

B

DRW_ON

Q5 2SD986

4.7k R188

M51957BFP

E

1 2 3 4

R197

PF_IN

1 2 3

K

VCC

Power Fail 10k

C107 *0.1uF_25V

B

B

PG

VBB BUZZER VBB

BUZZER

R193

R194

4.7K

10K

VCC E

R196 1k

BZ1 Q8 2SA1036K

B RESET#

C105

PS1740P02

BD5230G

VO VDD GND

C

U9 1 2 3

RESET#

5

CT

R195

RESET

4

NC

4.7K

-Vpw

Buzzer

C108

0.1uF_25V

4700pF (29ms delay)

A

A

* mark is unmounted parts.

1

Y108540-8

2

ECR 7900 Service Manual

3

4

5

97

6

7

8

1

2

3

4

5

6

8

7

P_ON

D

D

+24V (+32V)

D1

A

K

C

Q1 2SD1415

VPRN

Printer Power (+7.5V)

HT1 F1

E

1SR154-400

TR-5 19370 1.6A (125V/F1.6AL)

B C1

R4 4.7k

R2

EC1 C2

2.2k_1/4W

22k

K

C

0.1uF_50V

GOT-4540-SPL

Q2 2SA1036K C

R3

+

EC2

33 00uF_50V

B

E

R1 10k

Q3 DTC143EKA B

+

R5

0.1uF_25V

10k

100uF_16V

C3 ZD1 RD9.1EB1

E

A

0.1uF_50V

CN1

PG

A

D2

K

VI

HT2 U1 TA7805S Vin

GND

C

EC31QS06 D3

K

A

A

D5

K

A

AC115V 60Hz AC25V 0.1A

CQ-203B

R15

+

+

K

10K 4700uF_25V

+

16P-SAN

R7

100uF_16V 10k

0.1uF_25V

EC5

DSA26C

EC3

C5

0.1uF_25V

15000uF_25V

FH1

1 2 3 4 5 6 7

C4

C

FH2 0218-004 (250V/T4AL)

CQ-203B GN1

EC6 100uF_50V +

B7P-SHF-1AA

R8 10k

GND-ONE_POINT PF_IN

ZD2 RD30EB3

B

A

AC4V 0.5A

D6

EC4

K

DC23V 200mA

OSH-3425A-SP (Non Contact -Pin)

R6 10K

F2

CN2 DC12V 1500mA

K

VCC

Logic Power (+5.0V)

DSA26C

DSA26C

CT-89A

D4

G

A

DSA26C

Vout

VO

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

R9 3.3k F3 F4 B

K

TR-5 19370 0.5A (125V/F500mAL) TR-5 19370 1A (125V/F1AL)

D7

A

C

VFD Drive Power (-28V)

E

-Vpw

Q4 2SA1284D

1SR154-400

B

VF1 R10 3.3_1/4W (3225size)

A R11 470

ZD3

K

C6

R12 56k

0.1uF_50V

RD5.6EB1

VFD Filament Power (3.9V P-P)

R13 470 VF2 R14 3.3_1/4W (3225size)

* Mark not used.

A

1

98

2

ECR 7900 Service Manual

3

4

Y108540-8

5

A

6

7

8

1

2

3

4

5

6

7

8

_77 KS10 D

D CN33 UV SW

CN32 9 8 7 6 5 4 3 2 1

JP_2PIN UV_SW+ UV_SWK_SCAN0 K_SCAN1 K_SCAN2 K_SCAN3 K_SCAN4 K_SCAN5 K_SCAN6

CN34 Z

X

J3 3 _61

_51

_52

D19 JUMPER _26 KS2

_28 KS1

_53

D20

_54 D22

D21

JUMPER _33 KS3

JUMPER _32 KS4

_55

_56

D23

JUMPER _31 KS5

_57

D24

JUMPER _30 KS6

_58 D26

D25

JUMPER _29 KS7

JUMPER _27 KS8

_59 D27

JUMPER _34 KS9

JUMPER _73 KS10

_68 C

J6 2 _64

K_SCAN7 K_SCAN8 K_RETURN0 K_RETURN1 K_RETURN2 K_RETURN3 K_RETURN4 K_RETURN5 K_RETURN6

_67 C

J4

REG2J5

CN31_74

_69 C

REG1J7

J8

1 _62 OFF J9 _66 0

J10

PRG J11_65 9

_70 C

_71 C

J12

_72 C

C 00 _9 KS11

01 _10 KS12

02 _11 KS13

03 _12 KS14

04 _13 KS15

05 _14 KS16

06 _15 KS17

07 _16 KS18

08 _17 KS19

60 JP_8PIN

JP_9PIN

C

J2 4 _63

_76 JP_9PIN

1 2 3 4 5 6 7 8 9

J1

10 _19 KS20

11 _18 KS21

12 _24 KS22

13 _23 KS23

14 _22 KS24

15 _21 KS25

16 _20 KS26

17 _50 KS27

18 _25 KS28

20

21 _1 KS30

22 _2 KS31

23 _3 KS32

24 _4 KS33

25 _5 KS34

26 _6 KS35

27 _7 KS36

28 _8 KS37

31

32 _41 KS39

33 _40 KS40

34 _39 KS41

35 _38 KS42

36 _37 KS43

37 _35 KS44

38 _42 KS45

40 _44 KS46

42 _49 KS47

43 _48 KS48

44 _47 KS49

45 _46 KS50

46 _45 KS51

47 _43 KS52

50

52

53

54

55

56

57

KS29

30 _36 KS38

C

_60

_75

D29

D28

JUMPER

JUMPER

48

B

B

A

1

Y108540-8

2

ECR 7900 Service Manual

60 11 01

14 25 36 47

07 08

31 21

33 43 53

24 35 46 57

17 18

00 10

03 13 23

34 45 56 06

27 28

20 30

02 12 22

44 55 05 16

37 38

40 50

32 42 52

54 04 15 26

48

3

4

5

99

6

A

7

8

100 2

ECR 7900 Service Manual 3 1000pF

C5 1000pF

F2 F2

C4

38 39

C 1

C1 0.1uF RM1 100kx6

1000pF

-Vpw 12 13 14 15 16 17 18 19 20 21 22

4

Y108540-8

CS SIN SOUT SCLK VEE VEE DIG0 DIG1 DIG2 DIG3 DIG4

A

5

VDD SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9

VFD_a

1uF/50V

VFD_d VFD_c VFD_b

*S- 80845ANY

11 10 9 8 7 6 5 4 3 2 1

1

AN0 AN1 AN2 AN3 AN4 AN5 RE SET Xin VS S Xout VDD

O

DIG 5 DIG 6 DIG 7 DIG 8 DIG 9 SE G15 SE G14 SE G13 SE G12 SE G11 SE G10

V

VFD_CLK VFD_DATA VFD_CS #

8 7 6 5 4 3 2 1

4

VFD_D_ P VFD_r VFD_p VFD_n VFD_m VFD_k VFD_j VFD_h VFD_g VFD_f VFD_e

23 24 25 26 27 28 29 30 31 32 33

7 6 5 4 3 2

2

VFD_Line

VFD_10 G VFD_9G VFD_8G VFD_7G VFD_6G VFD_5G VFD_4G VFD_3G VFD_2G VFD_1G

R1 100k

10 G 9G 8G 7G 6G 5G 4G 3G 2G 1G NC NC com D.P r p n m k j h g f e d2 d1 c b a2 a1

K

D

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

IC1 A

VF1

F1 F1

G

3

+

1

2

1 2

3

1 5 6

6

7

7

8

CN1 B8B-PH-K-S

Main Board VF2

VCC D

D1

1N4148 RESET#

+ EC1 EC2

10uF/16V C2 0.1uF

C3 C6

22pF

IC2 C

44 43 42 41 40 39 38 37 36 35 34

PT6355

B B

DG1 10- LY-01G

* Mark not used. A

8

9. EXPLODED DIAGRAM

Y108540-8

ECR 7900 Service Manual

101