Casio CE-2400 User manual

SERVICE MANUAL
ELECTRONIC CASH REGISTER
(without price)
CE-2400(EX-259B)
OCT. 1996
Printer Model : CR-710

CONTENTS
Page
1. FEATURES................................................................................................... 1
2. SPECIFICATIONS........................................................................................ 1
3. MAC (Memory All Clear) OPERATION.......................................................2
4. DIAGNOSTIC OPERATION ......................................................................... 3
4-1. How to Start................................................................................................................. 3
4-2. Mode switch and PAD status display check.............................................................4
4-3. Hard key code check .................................................................................................. 4
4-4. Hard check function....................................................................................................5
4-4-1. Display, RAM, drawer and printer check ........................................................5
4-4-2. RAM read only check .......................................................................................6
4-4-3. Voltage check of memory back-up battery.....................................................6
4-4-4. All characters print check................................................................................7
4-4-5. Display the time ................................................................................................7
4-4-6. How to release the diagnostic mode...............................................................7
5. OPTION CIRCUIT......................................................................................... 8
6. CIRCUIT EXPLANATION............................................................................. 9
6-1. Power supply circuit ...................................................................................................9
6-2. CPU (µPD75517GF-400-3B9) ....................................................................................11
6-3. Motor error detection circuit ....................................................................................12
6-4. Mode key switch status read ...................................................................................13
6-5. RAM address/head drive signal switching circuit..................................................13
6-6. Initialize IC (Reset IC)................................................................................................14
6-7. Printer error condition of CPU .................................................................................14
6-8. Error code.................................................................................................................. 14
7. TO OPEN THE UPEER CASE ................................................................... 15
8. PCB LAYOUT............................................................................................. 16
9. CIRCUIT DIAGRAM ................................................................................... 17
10. PARTS LIST ............................................................................................... 28

— 1 —
• Operating temperature 0 °C ~ 40 °C
• Operating humidity 10 % ~ 90 %
• Storage temperature -25 °C ~ 65 °C
• Storage humidity 10 % ~ 95 %
• Vibration strength 1.5 G (The machine must be in the carton box)
• Power consumption Specification 0.35 A
In operation Max. 0.22 A
Min. 0.09 A
Power OFF 0.08 A
• Memory protection Back-up battery Mangan battery (UM-3 ×3 pcs.)
Back-up period 1 year (25 °C)
Battery life Replace the battery every year.
• Clock & Calendar Accuracy Within ±120 sec. per month (25 °C)
Auto calendar Effective until 2099 A.D.
Item CE-2350 CE-2400
Department number 38 40
PLU number 400 500
Clerk number 10 20
Calculator function Nil Available
• CPU Name µPD75517GF-400-3B9
Number of control bit 4
Internal RAM 512 ×4 bits
Internal ROM 12160 ×8 bits
Main system clock 4.19 MHz
Sub system clock 32.768 KHz
• RAM Name LC36256AL70/85/10
Capacity 32 KB
1. FEATURES
The difference between CE-2350 and CE-2400 is as follows.
2. SPECIFICATIONS
2-1. Electrical specifications
2-2. Environmental specifications
2-3. Principal components

— 2 —
• Printer Name CR-710-001
Print method Rubber-type inner-hummer printing system
Receipt number 2 receipt (Receipt & Journal)
Print digit 12 digits
(Numeric: 10 digits, Symbol: 2 digits)
Printing speed Approx. 2.4 lines/sec.
MCBF 1,500,000 lines
Paper width W 44.5 ±0.5 mm
Paper diameter 83 mm or less
Paper thickness 0.06 ~ 0.09 mm
Ink roll IR-93
Ribbon life 400,000 lines
• Display Name LED (HDSP-5261)
Number of digit 8 digits (LED ×4 pcs.)
• Power transformer Name TE-233-E4D
• Keyboard: Input system 2 keys roll over
• Drawer Name DL-2416 (D-15TC-A55SP-1*) M type drawer
for U.S.A.
2-4. Option
• Wet cover Name WT-63
• Power protection battery (B-6) Drive period Approx. 3 hours with the following conditions
Drive conditions Processing time: 60 sec./customer
Quantity of sales: 8 items/customer
Registered amounts: 3 digits/item
Number of customer: 25 persons/hour
Charging time 8 hours to full charge
3. MAC (Memory All Clear) OPERATION
Procedure
(1)Plug the power cord into an outlet.
(2)Pressing the JOURNAL FEED button and turn the mode switch to Z position.
(3)Release the JOURNAL FEED button. After few seconds, MAC operation will be executed.
(4)The following receipt will be issued, if completed.
00•00•00
00:00
No 0001
000000000
••2749• •
Date
Time
Consecutive No.
MAC print

— 3 —
Notes:
1. After initialize operation, the clock counts from 00 : 00 A.M. and also the calendar is started from
00 - 00 - 00.
2. If the memory of RAM is broken, the machine will be initialized after power on.
4. DIAGNOSTIC OPERATION
4-1. How To Start
(1)Plug the power cord into an outlet.
(2)Execute the MAC operation.
(3)Turn the mode switch to "Z" position.
(4)Input 99999999 and press the sub total button.
(5)Start the diagnostic program and issued following receipt.
Note: If you have done the registration after MAC operation, the Diagnostic program can not start.
00•00•00
00:00
No 0002
••••••••–
••2749• •
Date
Time
Consecutive No.
Start printing for diagnostic program

— 4 —
20 26 32 38 43
19 25 31 37 42
18 24 30 36 41
17 23 29 35 40
16 22 28 34 39
15 21 27 33
C1314
789
456
123
01011
Receipt Journal
FEED FEED
47 51
46 50
45 49
44 48
4-2. Mode switch and PAD status display check
When the Clear key is pressed or changing the position of mode switch, the machine displays the
mode switch position.
Drawer status 1 Drawer open
0 Drawer close
PAD status PAD 1 PAD 2
0 0 Short Short Canada
0 1 Open Short
1 0 Short Open
1 1 Open Open U.S.
Receipt switch position 8 Receipt OFF
0 Receipt ON
Mode switch position 1 Z
2X
4 REG
8RF
4-3. Hard key code check
When all keys except numerical keys, Clear key, RECEIPT FEED key, JOURNAL FEED key are
pressed directly, the machine displays the hard key code as shown below.
23
Hard key code
20100 0

— 5 —
4-4. Hard check function
Enter 1 digit from numeral key and press the sub total button (ST), the following Hard check function
will be executed.
(1) 1+ST : Display, RAM, Drawer, Printer check
(2) 5+ST : RAM read only check
(3) 7+ST : Voltage check of memory back-up battery
(4) 8+ST : Print all characters
(5) 9+ST : Display the time
4-4-1. Display, RAM, drawer and printer check
Operation: 1+ST
(1)All segments turn on.
(2)Date and time set
Set the following data in the machine automatically.
Date : 1st. January 1992
Time : 12 : 34 : 00
(3)RAM write and read check
The machine writes data into RAM and read out the data to compare with written data.
When this check is finished correctly, the machine goes to check No. (4).
However, if an error is occurred, the machine sounds an error tone, prints the error receipt,
and stops Hard check program.
Error receipt sample " -- -- "
(4)Drawer open check
Open the drawer.
(5)Printing check
Print the following character.
Z 0 0 0 0 0 0 0 0 0 CA CD
88888.8.8.8.

— 6 —
(6)Receipt issue
The following receipt is issued.
01•01•92
4512:34
No 0004
Z 0 0 0 0 0 0 0 0 0 CA CD
(7)Test display
765432.10
4-4-2. RAM read only check
Operation: 5+ST
Note: Be sure to execute the RAM write and read check (1 + ST) before this check.
The machine reads out the data to compare with written data until an error is occurred and
blinks " -- " on the display during this check.
To stop this check, turn the mode switch to OFF position.
If an error is occurred, the machine sounds an error tone, prints " -- -- " on the
receipt, and stops this check.
4-4-3. Voltage check of memory back-up battery
Operation: 7+ST
Display the voltage of back-up battery in real time. (Measurement is Volt (V) level.)
To stop this check, turn the mode switch to OFF position.

— 7 —
4-4-4. All characters print check
Operation: 8+ST
01•01•92
45 12:36
No 0005
Z 000000000 CA CD
1 111111111 CH I
2 222222222 RA II
3 333333333 PO III
4 444444444 CK IV
5 555555555 # ST
6 666666666 VD CG
7 777777777 TX Q
8 888888888 TA @
9 999999999 NS AT
★ ★★★★★★★★+CR TL
• ••••••••– ✽–
XPLNo:% RF
4-4-5. Display the time
Operation: 9+ST
The machine display the time.
To stop this check, press the Clear key.
1 2 -- 3 4 01 The time counts up.
If you make following operation, the machine resets the time data and starts again.
Operation: 9 9+ST
4-4-6. How to release the diagnostic mode
Execute MAC operation.

— 8 —
5. OPTION CIRCUIT
Power protection battery B-6
Power protection battery B-6 is available for CE-2350.
However, interface circuit is not mounted to the machine.
When you use the B-6, mount the following parts.
Parts list for interface
Code No. Parts Name Specification Q'ty
2200 3577 Transistor 2SA1015 (GR, O, Y) 1
2301 0011 Diode 1S2471 2
2310 3541 Zener diode RD12EB2 1
2600 7313 Carbon film resistor R-25-10K-J 3
2614 0552 Carbon film resistor R-25-2K-J 1
2801 7098 Electrolytic capacitor 50RE2 1
6219 4553 Connector fixing plate E311094-1 1
6236 6180 P1625-06P connector ass'y E314531B-10 (#22-200) 1
Pin assignment for B-6 connector
Pin layout
▼
Interface circuit for B-6
Pin No. Description
1 F.G. (Green)
2 Not used
3 CS (Black)
4 GND (Blue)
5 Not used
6 VP (Brown)