SERVICE MANUAL
ELECTRONIC CASH REGISTER
(without price)
Printer Model : M42V
PCR-260 (EX-266B)
PCR-255 (EX-267B)
SEP. 1996
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. Printer drive circuit ....................................................................................................... 6
6-4. Pin description ............................................................................................................. 6
7. DISASSEMBLY ............................................................................................ 8
7-1. To open the upper case ............................................................................................... 8
7-2. To remove the Main PCB ............................................................................................. 8
7-3. To remove the keyboard ass'y ..................................................................................... 8
8. DIAGNOSTOC OPERATIONS ..................................................................... 9
8-1. To start the diagnostic operation ................................................................................... 9
8-2. Check items .................................................................................................................. 9
8-3. Operations .................................................................................................................. 10
9. IC DATA ..................................................................................................... 13
9-1. LB1268 ........................................................................................................................ 13
9-2. S-80728AN-Z .............................................................................................................. 13
10. CIRCUIT DIAGRAM ................................................................................... 14
11. PCB LAYOUT............................................................................................. 23
12. PARTS LIST ............................................................................................... 24
-- 1 --
1. FEATURES
2. SPECIFICATIONS
PCR-260
Function
PCR-260 (U.S.A.)
PCR-255 (U.S.A.)
Department number
10
10
PLU function
100
100
Customer display
Nil
Effective
PRG data back up function
Nil
Nil
Calculator function
Effective
Effective
120V
Power consumption In operation
Max.
4.5W
0.09A
Stand-by -
0.06A
Mode SW OFF
-
0.05A
Memory protection
Backup battery
Mangan battery UM-3
× 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-1319
-- 2 --
120V
Power consumption In operation
Max.
0.11A
Stand-by
0.07A
Mode SW OFF
0.06A
Memory protection
Same as PCR-260
Clock and calender
Same as PCR-260
Environment
Same as PCR-260
Printer
Same as PCR-260
Ink roller
Same as PCR-260
Roll paper
Same as PCR-260
Drawer
S drawer (Coin 5/ Bill 4)
DL-1319
PCR-255
3. OPTION (PCR-260/255)
· 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.
-- 3 --
Voltage detection
Winder Motor drive circuit
Printer drive circuit
Drawer drive circuit
Reset IC
Buzzer
KEYBOARD
DISPLAY
CPU
5. BLOCK DIAGRAM