Casio 110CR Manuel utilisateur

ELECTRONIC CASH REGISTER

(with price)

SERVICE MANUAL

110CR/PCR250 (EX-266)

150CR (EX-267)

JAN. 1995

Printer Model : M42V

INDEX

-CONTENTS

Page

1.FEATURES ...................................................................................1

2.SPECIFICATIONS ...................................................................................1

3.OPTION ...................................................................................2

4.MAC OPERATION ...................................................................................2

5.BLOCK DIAGRAM ...................................................................................3

6.CIRCUIT EXPLANATIONS.............................................................................4

6-1. Power supply circuit .................................................................................4

6-2. Reset circuit ...................................................................................5

6-3. Data communication between CPU and EEPROM .................................6

6-4. Printer drive circuit ...................................................................................8

6-5. Pin description ...................................................................................9

7.DISASSEMBLY .................................................................................10

7-1. To open the upper case.........................................................................10

7-2. To remove the Main PCB.......................................................................10

7-3. To remove the keyboard ass'y...............................................................10

8. DIAGNOSTOC OPERATIONS ....................................................................11

9. IC DATA .................................................................................16

9-1. LB1268 .................................................................................16

9-2. S-80728AN-Z .................................................................................16

10.CIRCUIT DIAGRAM .................................................................................17

11.PCB LAYOUT .................................................................................28

12. PARTS LIST .................................................................................29

- 1 -

1. FEATURES

2. SPECIFICATIONS

110CR/PCR-250

100V 120V 220V 230/240V

Power consumption In operation Max. 4.5W 0.08A 0.09A 0.04A 0.05A

Stand-by - 0.05A 0.06A 0.03A 0.04A

Mode SW OFF - 0.04A 0.05A 0.02A 0.03A

Memory protection Backup battery Mangan battery UM-3 x 3 pcs. (25°C)

Backup period 1 year (25°C)

Battery life Replace every 1 year

Clock and calender Accuracy Within ±30 sec. per month

Auto calender Effective until 2099 A.D.

Environment Operating temperature 0°C ~ 40°C

Operating humidity 10% ~ 90%

Storage temperature -25°C ~ 65°C

Storage humidity 10% ~ 95%

Printer Model M-42V

Print method Print wheel selecting type serial printer

Print digits 12 digits (Amount 10 digits : Symbol 2 digits)

MCBF 700,000 lines

Ink roller Model IR-40 (Purple)

Life 1,000,000 characters

Roll paper Type Fine-quarity paper

Size 57.5±0.5 mm

Roll diameter 80 mm or less

Drawer S drawer (Coin 5/Bill 4) DL-1313 ( for U.S.A.)

S drawer (Coin 5/Bill 3) DL-1817 (for except U.S.A.)

M drawer (Coin 5/Bill 4) DL-2439 (for Europe, Other countries)

M drawer (Coin 8/Bill 4) DL-2749 (for Europe,U.K. and Other countries)

Function 110CR PCR-250 150CR 150CR

(U.S.A.,Canada)

Depertment number 4 8 4 8

PLU function Nil 16 Nil 16

Customer display Nil Nil Effective Effective

PRG data back up function Effective Nil Effective Nil

Calculator function Effective Effective Effective Effective

- 2 -

150CR

3. OPTIONS (110CR/PCR-250/150CR)

• Wet cover WT-69

4. MAC OPERATION (Memory All Clear operation)

1. Set the Mode Switch to OFF.

2. Plug the power cord of the ECR off an AC outlet.

3. Remove the memory protection batteries.

4. Leave the ECR a few minutes and plug the power cord into an AC outlet.

5. Set the memory protection batteries.

6. Turn the Mode Switch to REG position.

120V 220V 230/240V

Power consumption In operation Max. 0.11A 0.05A 0.06A

Stand-by 0.07A 0.04A 0.05A

Mode SW OFF 0.06A 0.03A 0.04A

Memory protection Same as 110CR

Clock and calender Same as 110CR

Environment Same as 110CR

Printer Same as 110CR

Ink roller Same as 110CR

Roll paper Same as 110CR

Drawer S drawer (Coin 5/ Bill 4) DL-1313 (for U.S.A.)

S drawer (Coin 5/Bill 3) DL-1817 (for Europe,U.K.,

germany,Other countries)

M drawer (Coin 5/Bill 4) DL-2439 (for Europe,

Canada, Other countries)

M drawer (Coin 8/Bill 4) DL-2749 (for Europe,U.K.,

Other countries)

- 3 -

5. BLOCK DIAGRAM

CPU

DISPLAY

EEPROM

Reset IC

Buzzer

Winder Motor drive circuit

Printer drive circuit

Drawer drive circuit

Voltage detection

KEYBOARD

- 4 -

6. CIRCUIT EXPLANATION

6-1. Power supply circuit

1. Plug the power cord into AC outlet, secondary voltage (9.65VAC) of the power transformer T1

will be appears at "A" point.

2. Then, its AC voltage is rectified by the diode bridge and change it to DC voltage.("B" point)

3. DC voltage appears more than 7V at the corrector of power transistor 2SD2396, and then

the power transistor is turned on.

Then VP is supplied. ("C" point)

4. When the VP voltage becomes more than 3.3V, the transistor 2SD945 is turned on and then

PWD signal becomes GND level. ("F" point)

When the PWD signal becomes GND level, CPU knows no power failure.

5. VP is supplied at the DC DC converter trans T2, the DC DC converter makes display and logic

circuit voltage.

VN ,VF1,VF2 : Display voltage ("I", "J" point )

VDD : Logic circuit voltage ("H" point)

Transistor 2SD1803 is used for oscillating the primary voltage of DC DC converter trans.

D E F

- 5 -

Voltage level is measured at the following condition.

1. Plug the power cord in AC outlet.

2. Mode switch position : REG, display 0.00

3. Put in the memory protection batteries.

4. Plug out : Plug out the power cord , the memory protection batteries in.

6-2. Reset circuit

When the voltage level at the pin no.17 of CPU is

not stable, CPU does not work properly.

To make a stable voltage, the reset IC(S-80728AN)

is used for this circuit.

In case the voltage level of VDD becomes down

output terminof reset IC is out the stable voltage.

BGND

ABC

D E

G H I

Power ON

9.65 VAC

10.52V

5.76V

10.45V

0.78V

0.12V

Pulse

5.07V

-23.9V

Plug out

000

0 0

4.13V

4.30V

RESET Pin No.17

VDD

GND

S-80728AN

- 6 -

6-3. Data communication between CPU and EEPROM

CS : Chip enable

SK : Sirial data clock

DI : Serial data input

DO : Serial data outpu

EEPROM is a memory to possible write/erase by electricity .

The BR93LC46A privides efficient nonvolatile read/write memory arranged as 64 registers of 16

bits each.

(64 words X 16 bits = 1024 bits)

[Block diagram]

Command code

controller

Clock generator

Power detection

Write

protection High voltage

genarator

Address

decorder

R/W

amplifier

Address

buffer

Data

Dammy bit

Command

1024 bit

EEPROM array

6 bits

16 bits

Pin No.23

Pin No.14

Pin No.15

Pin No.16

EEPROMCPU

BR93LC46A

- 7 -

[Data reading procedure]

When the CPU read the dara of EEPROM, CPU send the CS signal and SK signal to EEPROM.

Then, CPU send the address to EEPROM, and then EEPROM send the data to CPU.

[Data writing procedure]

When the CPU save the data to EEPROM, CPU sends the CS and SK signal to EEPROM.

And CPU send the address and data to EEPROM from pin No.15.

When the EEPROM writes the data , EEPROM outputs the busy signal from DO terminal to CPU.

After finish writing, EEPROM outputs the ready signal from DO terminal to CPU.

Address

Data

Output data here

Address Data

High Impedance BUSY(L)

READY(H)

Status

- 8 -

6-4. Printer drive circuit

When the CPU start printing, CPU send MD signal to rotate motor unit.

Then the printer send back the RP(reset pulse),PT and PT (Timing pulse) to CPU.

After CPU receive RP,PT andPT, CPU knows the position of printin wheel.

And then, CPU send HD signal to operate the printing magnet when the character selected.

The CPU counts the TP signal to select the character.

6-5. Pin description (CPU uPD78042AGF)

CPU

Pin No.44

Pin No.45

Pin No.47

Pin No.62

Pin No.63

Printer M42

Pin No. Signal In/Out Mode SW

REG Mode SW

OFF AC cord

Plug off Description

1 P94/FIP6 Out Pulse -24V L Display digit signal DG7

2 P93/FIP5 Out Pulse -24V L Display digit signal DG6

3 P92/FIP4 Out Pulse -24V L Display digit signal DG5

4 P91/FIP3 Out Pulse -24V L Display digit signal DG4

5 P90/FIP2 Out Pulse -24V L Display digit signal DG3

6 P81/FIP1 Out Pulse -24V L Display digit signal DG2

7 P80/FIP0 Out Pulse -24V L Display digit signal DG1

8 VDD - +5V +5V +5V VDD terminal

9 P27/SCK0 In/Out - - - Not used

10 P26/SO0/SB1 In/Out - - - Not used

11 P25/SI0/SB0 In/Out - - - Not used

12 P24/BUSY In/Out - - - Not used

13 P23/STB Out H H H Strobe signal for AVREF

14 P22/SCK1 Out L H H SK signal for EEPROM

15 P21/SO1 Out L H H DI signal for EEPROM

16 P20/SI1 In H H H DO signal for EEPROM

17 RESET In H H H Reset signal

18 P74 Out H H L Drawer open signal

19 P73 Out L H H Common signal for PAD condition

20 AVSS - GND GND GND GND for AD converter

21 P17/ANI7 In GND GND GND GND

22 P16/ANI6 In GND GND GND GND

23 P15/ANI5 Out L L H Chip enable signal for EEPROM

24 P14/ANI4 In GND GND GND GND

25 P13/ANI3 In GND GND GND GND

26 P12/ANI2 In GND GND GND GND

27 P11/ANI1 In GND GND GND GND

28 P10/ANI0 In H H H Low battery detection terminal

29 AVDD - H H H Power for AD converter

30 AVREF In L L L Voltage for AD converter (VDD)

31 XT1 In Pulse Pulse Pulse Sub system clock

32 XT2 - Pulse Pulse Pulse Sub system clock

33 VSS - GND GND GND GND

34 X1 In Pulse L L Main system clock

35 X2 - Pulse H H Main system clock

36 P37 In L L L Mode switch position (OFF)

37 P36/BUZ Out L L L Buzzer signal

38 P35/PCL In L L L Mode switch position (Z)

39 P34/T12 In L L L Mode switch position (X)

40 P33/T11 In L L L Mode switch position (CAL)

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