Casio CE-T300 User manual

SERVICE MANUAL
ELECTRONIC CASH REGISTER
(without price)
Printer Model : LTP4242B-C432
CE-T300(EX-479A* )
APR. 2000
INDEX

CONTENTS
CE-T300 Page
1. SPECIFICATIONS........................................................................................ 1
2. INITIALIZE (MAC) OPERATION.................................................................. 3
3. F-INIT (FMAC) OPERATION ....................................................................... 3
4. BLOCK DIAGRAM....................................................................................... 4
5. TO OPEN THE UPPER CASE ..................................................................... 6
6. CIRCUIT EXPLANATION ............................................................................ 8
6-1. Power supply circuit .................................................................................................. 8
6-2. Reset and power down circuit................................................................................... 9
6-3. CPU description........................................................................................................ 10
6-4. Momory chip selection circuit................................................................................. 12
6-5. Flash ROM1 address circuit .................................................................................... 13
6-6. Memory map ............................................................................................................. 13
6-7. Printer drive circuit................................................................................................... 14
6-8. RS232C port COM1 circuit....................................................................................... 15
6-9. Keyboard selection switch (Not mounted for CE-T300) ....................................... 15
6-10. Flash ROM pack circuit (Memory Cassette RAC-9)............................................. 15
6-11. To mount optional circuit ....................................................................................... 16
1) Clerk key circuit........................................................................................................ 16
2) Multi-drawer circuit .................................................................................................. 18
3) Paper near end sensor circuit ................................................................................. 19
7. DIAGNOSTIC OPERATION....................................................................... 20
7-1. To start the diagnostic program ............................................................................. 20
7-2. Check item ................................................................................................................ 20
7-3. Operation of each test.............................................................................................. 20
7-4. Switch status test ..................................................................................................... 21
7-5. Individual function test ............................................................................................ 22
7-6. To exit the diagnostic mode .................................................................................... 32
8. ERROR CODE LIST................................................................................... 33
9. IC DATA ..................................................................................................... 34
10. PCB LAYOUT ............................................................................................ 45
11. CIRCUIT DIAGRAM ................................................................................... 47
12. PARTS LIST............................................................................................... 65

— 1 —
• CPU Name uPD784215GC175-8EU
Number of control bit 8bit
Internal RAM 4 KBytes
• RAM Name HY628100ALLG-70
Capacity 1 Mbits
• Flash ROM Name LH28F016SCT-L94
Capacity 16 M bits
• Printer Name LTP4242B-C432
Print method Thermal dot line printing
Dots per line 448 dots (print area 432 dots)
Resolution 8 dots/mm
Life span (at 25°C) 25 million characters
Activation pulse resistance 50 million pulse or more (print ratio = 25%)
Abrasion resistance 30 km or more
• Auto paper cutter Model ACU2224C-A
Longevity 300,000 cuts
• Roll paper Type Thermal paper
Size Width 58 + 0 mm - 1mm
Roll diam 83 mm or less
Thickness 75 ± 3 µm
1. SPECIFICATIONS (CE-T300)
1-1. Electrical specifications
120V 220V 230V 240V
• Power consumption In operation Max. 0.7 A 0.4A 0.4A 0.4A
Min. 0.3 A 0.2A 0.2A 0.2A
Power OFF 0.3 A 0.2A 0.2A 0.2A
• Memory protection Back-up battery VL3032/1F2
Back-up period 90 days (25 °C)
Battery life Replace the battery every 5 years.
Recharge time 48 hours
• Clock & Calendar Accuracy Within ± 30 sec. per month (25 °C)
Auto calendar Effective until 2099 A.D.
1-2. Environmental specifications
• 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)
1-3. Main components

— 2 —
DEVICE NAME MODEL NOTE
• RAM Chip RAM-610-10LL Capacity 4Mbits (512 Kbytes)
• Memory cassette RAC-9 16Mbits (2Mbytes) with write protection switch
• Wet cover WT-77
• Modem Sports star Recommend model : U.S.Robotics
56.4Kbps Com 1 port only
• P/C cable PRL-CB-2 Com 1 port only
1-5. Option List
1-4. Drawer List
DRAWER NAME Specification NOTE
• DL-2766 (M type) D-9BC-B84M-9* EUROPE, Saudi-Arabia, Other countries
• DL-2767 (M type) D-9BC-B84SM-9* UK, Germany
• DL-3617 (L type) D-11BH-B65-9* Saudi-Arabia
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the manufacturer.
Dispose of used batteries according
to the manufacture’s instructions.
VORSICHT !
Explosionsgefahr bei unsachgemäßem Austausch der
Batterie.
Ersatz nur durch denselben oder einen vom
Hersteller empfohlenen gleichwertigen Typ.
Entsorgung gebrauchter Batterien nach
Angaben des Herstellers.
ADVARSEL !
Lithiumbatteri - Eksplosionsfare ved fejlagtig hándtering.
Udskiftning má kun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandØren.

— 3 —
2. INITIALIZE (MAC) OPERATION (CE-T300)
1. Plug the power cord into an AC outlet.
2. Set the mode switch to "OFF" position.
3. While pressing the Journal feed Button, turn the mode switch to "PGM" position.
4. Release the Journal feed button.
5. Input the MAC CODE. (11 digits)
6. Press "#2" key.
7. Initialize operation is executed.
MAC CODE 1 : D11 to D1 (11 digits)
Description Choice Program code
Print PGM mode password, when flag clear Yes = 0 D11 =
No = 4
Password in PGM3 to 7 mode Significant D10 to D7 =
number 4 digits
Messages and descriptions are written in Significant D6 =
English=0, French=1, Spanish=2, German=4 number
Model for Significant D5 =
USA or Canada=2, German=4, number
Other area (0.00) =1, Other area (0) = 3
Fixed number = 15 Fixed D3 D4 =
Use clerk switch or push switch = 0 Significant D2 =
Use clerk lock Key or secrec code key = 1 number
Use Euro only No = 0 D1 =
Yes = 1
3. F-INIT (FMAC) OPERATION
1. Plug the power cord into an AC outlet.
2. Set the mode switch to "OFF" position.
3. While pressing the Receipt feed button , turn the mode switch to "PGM" position.
4. Release the receipt feed button.
5. Press "#2" key.
Note : The location of "#2" key, see "HARD KEY CODE TABLE" on page 20.

— 4 —
4. BLOCK DIAGRAM
4-1. PCB CONNECTION (CE-T300)
TYPE

— 5 —
4-2. BLOCK DIAGRAM (CE-T300)
Address
Latch
Address bus A8 - A19
A0 -A7
Data bus D0 -D7
RAM1
HY628100A
LLG-70
(128 K bytes)
CPU
uPD784215GC-175-8EU
Flash ROM 1
LH28F016SCT-L95
(2 M bytes)
Data buffer
I/O selector
Printer
driver circuit
Thermal Printer
LTP4242B-C432
(Receipt side)
LED driver and Key control
LED display LED customer
display Keyboard
COM1 Driver
MAIN PCB E479-1 B
Thermal Printer
LTP4242B-C432
(Journal side)
Auto paper cutter
ACU2224C-A
RAM3
(Option)
HM628512ALP-7
512 K bytes
(RAM-610)
Flash pack (Option)
Memory cassette RAC-9

- 6 -
5. TO OPEN THE UPPER CASE
1. Open the printer cover. Then, remove the
ribbon cover from the machine.
2. Remove the 2 screws of the upper case.
3. Push the 3 dots marking point at the right
side of lower case. At the same time, slide
the upper case to the front side.
4. Open upper cese from the left side.
Remove the 2 screws.
Open the printer cover.
Slide the upper case
to the front side.
Remove the ribbon cover.
Power switch cover
Press the 3 dots marking point.

- 7 -
6. To remove the Main PCB, release the 2 screws of the Flash ROM cover and 2 locking
supporters of point A and the COM1 port outside 2 screws.
Remove 2 screws for COM 1 port.
5. The each parts of the Main PCB are located as shown in the picture.
Note: RAM2 is not used for CE-T300.
Battery
Flash ROM 1 (2 M bytes)
Main PCB
RAM 1 (128 Kbytes)
RAM 4
(Not used)
RAM 3
(Option)
COM 1 port
CPU
Buzzer
Printer cables
Display cable
Power supply connector
Reset Switch
Point A
Release the 2 locking supporters.
7. Power supply unit cover is removed by 3 screws. And, the 2 Fuses are located as shown in the
picture.
Main PCB
Remove the 3 screws.
Then, remove the power supply cover.
Power transformer
Voltage selector
Normally, Do not change
the Voltage position.
Fuse F1
250V 1A
Fuse F2
250V 2A
Fuse F3
250V 400mA
(Not used for CE-T300)
Clerk key connector
Keyboard select switch
(Not used for CE-T300)
RAM 2 (Not used)
Remove 2 screws for Flash ROM cover.
Then, remove the Flash ROM cover.

- 8 -
6.CIRCUIT EXPLANATION
6-1. Power supply circuit
The power supply circuit provides the following voltage for the main circuit.
Output Pin No1----- VC1 (DC32.3V): To the VC line for the Display power. (Not used for CE-T300)
Output Pin No.2---- VC2 (DC24V): To the Vp line for the printer power.
Output Pin No.3---- VLED (DC5.85V): To the Vcc,Vcc2 and Vdd for the logic circuit power.
Output Pin No.4---- GND: Signal GND.
The power switch SW1 is located at the right side of the lowercase.
After connected the power plug into AC outlet and turn on the SW1, the transformer T1 will
genarate the about AC33V to secondary side. Then, after rectifier circut, the VC1 (DC32.3V)
is supplied to the VC line for display power (for the drive of display tube. Not for LED model.)
The IC2 is the shunt regulator for the control of Q1 transistor. This circuit is genarate the
VC2 (DC24V) for the printer power. The IC1 is regulator for 5V power supply.
Power supply PCB E445-S1
Voltage selector
NOTE: Do not turn the
selector to avoid the voltage
selection mistake.
Power SW1 cover
Power switch SW1
Note: F3 is not used for
CE-T300.

- 9 -
6-2. Reset and powe down circuit
The rest and power down circuit are as following circuit. The reset switch is provided for the
hard reset to cleare the system error. Use this switch only when the FMAC or MAC are not
possible to perform.
Reset switch
The position of Reset switch
Top of view View of inside the printer cover
Reset switch
The mark of RESET
6-3. CPU pin description(uPD784215GC-175-8EU)
The CPU pin descriptions are as follows:
Ferrite core of
Printer Cable

- 10 -
CPU pin description(uPD784215GC-175-8EU)
Pin No. Signal Name Description In/Out
1 P120 VP ON Thermal printer VP ON signal Out
2 P121 CROM IN Flash ROM pack in signal In
3 P122 MOTOR E(R) Receipt printer motor E drive signal Out
4 P123 MOTOR E(J) Journal printer motor E drive signal Out
5 P124 MOTOR A(J) Journal printer motor A drive signal Out
6 P125 MOTOR B(J) Journal printer motor B drive signal Out
7 P126 MOTOR A(R) Receipt printer motor A drive signal Out
8 P127 MOTOR B(R) Receipt printer motor B drive signal Out
9 VDD VDD Power supply VDD +5V
10 X2 X2 Clock 12.5 MHz In
11 X1 X1 Clock 12.5 MHz In
12 VSS GND Power supply GND
13 XT2 XT2 Clock In
14 XT1 XT1 Clock In
15 RESET RESET Reset termial In
16 P00 HS INT HS(Head up Sensor) interrupt signal In
17 P01 COM2 SEL COM 2 selection Out
18 P02 CUTTER RP Auto-cutter reset pulse CUTTER RP In
19 P03 PWD Power down signal In
20 P04 VFD BUSY Display controller busy signal In
21 P05 DTR2 DTR2 signal input In
22 P06 IRQ ARCNET Interrupt rquest from ARCNET controller In
23 AVDD VDD Power supply VDD +5V
24 AVREF0 AVREF0 Basic Volatge signal for Thermal printer sensor In
25 P10 AVREF Vp voltage check terminal In
26 P11 HD T(R) Head thermistor input (Receipt printer) In
27 P12 HD T(J) Head thermistor input (Journal printer) In
28 P13 DWS Drawer sensor input In
29 P14 DSR1 COM1 DSR signal In
30 P15 CI1 COM1 CI signal In
31 P16 CD1 COM1 CD signal In
32 P17 P.N.E. Paper near end sensor input In
33 AVSS GND Power supply GND
34 P130 LED SLATCH LED Latch signal Out
35 P131 LED CE LED chip enable signal Out
36 AVREF1 VDD Connected to VDD +5V
37 P70 RX2 COM2 and COM3 receive data In
38 P71 TX2 COM2 and COM3 transmit data Out
39 P72 RAM ENABLE RAM enable signal Out
40 P20 RX1 COM1 receive data In
41 P21 TX1 COM1 transmit data Out
42 P22 RTS1 COM1 RTS signal Out
43 P23 CPU CLOCK CPU clock output Out
44 P24 RTS2 COM2 RTS signal Out
45 P25 LED SIN LED data in signal In
46 P26 LED SOUT LED data out signal Out
47 P27 LED SCK LED SCK signal out Out
48 P80 RB0/CB0 Bank selection RB0/CB0 Out
49 P81 RB1 Bank selection RB1 Out
50 P82 RB2 Bank selection RB2 Out

- 11 -
Pin No. Signal Name Description In/Out
51 P83 RB3 Bank selection RB3 Out
52 P84 RB4/CB1 Bank selection RB4/CB1 Out
53 P85 FB0/CB2 Bank selection FB0/CB2 Out
54 P86 FB1 Bank selection FB1 Out
55 P87 FB2 Connected to GND
56 P40 D0 Data/address bus D0/A0 In/Out
57 P41 D1 Data/address bus D1/A1 In/Out
58 P42 D2 Data/address bus D2/A2 In/Out
59 P43 D3 Data/address bus D3/A3 In/Out
60 P44 D4 Data/address bus D4/A4 In/Out
61 P45 D5 Data/address bus D5/A5 In/Out
62 P46 D6 Data/address bus D6/A6 In/Out
63 P47 D7 Data/address bus D7/A7 In/Out
64 P50 A8 Address bus A8 Out
65 P51 A9 Address bus A9 Out
66 P52 A10 Address bus A10 Out
67 P53 A11 Address bus A11 Out
68 P54 A12 Address bus A12 Out
69 P55 A13 Address bus A13 Out
70 P56 A14 Address bus A14 Out
71 P57 A15 Address bus A15 Out
72 VSS GND Power supply GND
73 P60 A16 Address bus A16 Out
74 P61 A17 Address bus A17 Out
75 P62 A18 Address bus A18 Out
76 P63 A19 Address bus A19 Out
77 P64 RD Read signal Out
78 P65 WR Write signal Out
79 P66 WAIT Wait signal In
80 P67 ASTB Address strobe signal Out
81 VDD VDD Power supply VDD +5V
82 P100 BUZZER Buzzer output signal Out
83 P101 SLATCH Transferred data latch (memory) output Out
84 P102 STBSFTCL Thermal printer data clear signal Out
85 P103 R/J SEL Recipt / Journal selection signal Out
86 P30 STBSFTCK Thermal printer data clock signal Out
87 P31 FLASH RST Flash reset signal Out
88 P32 DTR1 COM1 DTR signal Out
89 P33 CTS1 COM1 CTS signal In
90 P34 DW1 Drawer drive DW1 signal Out
91 P35 STBSFTD Thermal printer data signal Out
92 P36 HS (R) HS(Head up sensor) signal input (Receipt side) In
93 P37 HS (J) HS(Head up sensor) signal input (Journal side) In
94 TEST GND Connected to GND
95 P90 MODE SIN Mode switch data in signal In
96 P91 MODE SCK Mode switch SCK signal Out
97 P92 MODE SLOAD Mode switch data load signal Out
98 P93 KI SLOAD Key data load signal Out
99 P94 PS (R) Phototransistor collector (Receipt side) input In
100 P95 PS (J) Phototransistor collector (Journal side) input In

- 12 -
RB1
RB2
RB3
RB4/CB1
RAM enable
ARC RESET
RAM1 CE is for
RAM 1 chip enable signal.
RAM1 selection
The RAM1 is selected by the RAM enable signal "H" and the 2CS signal " L" of output pin
No.13 . The 2SC signal becomes "L" when the CPU address is as follows:
A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
L L H L X X X X X X X X X X X X X X X X
2 X X X X
Therefore, the RAM1 CE will active when the CPU adress is from 20000H to 3FFFFH with
RAM enable signal "H".
Flash ROM1 selection
The Flash 1 CE will active by the IC25 output pin No.3. This is inverted signal of A19.
A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
H L L L X X X X X X X X X X X X X X X X
8 X X X X
Therefore, the Flash1 CE will active when the CPU adress is from 80000H to FFFFFH.
Also, the 3SC signal becomes "L" when the CPU address is as follows:
A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
L L H H X X X X X X X X X X X X X X X X
3 X X X X
6-4. Memory chip selection circuit
The RAM chip select signals made by the following circuit.
There are 4 chip enable signal lines for RAM selection and 3 chip enable signal lines for
Flash ROM selection (including Memory cassette).

- 13 -
6-5. Flash ROM1 address circuit
The Flash ROM1 address signals FA17 to FA20 are made by the following circuit.
The Flash ROM1 (LH28F016SCT-L95, 16M bits) is used for the application program.
Flash ROM1 (16M bits)
6-6. Memory map
The memory table is as follows:
CPU address BANK port Flash memory address NOTE
A19 A18 A17 FC2 FC1 FC0 BANK FA20 FA19 FA18 FA17 Memory block No. 8M bank 16M bank
H L L L L L 0 L L A18 A17 02 to 07
L H L L H 1 L H A18 A17 0A to 0F
H L H X X 2 A18 A17 L L 08,09
10,11,18,19
L H L 3 H L A18 A17 12 to 17
L H H 4 H H A18 A17 1A to 1F
H H H X X X Common LLLL00,01 Common
RAM enable 2CS 3CS 4CS 8CS CCS A18 A19 RAM BANK Flash BANK RAM1 RAM2 RAM3 RAM4 Flash1 Flash2 Flash pack CG MASK
No. RB0 RB1 RB2 RB3 RB4 FB0 FB1 FB2 CS A16 CS CS2 A16 CS A16 A17 A18 CS A16 A17 A18 CS A18 CS A18 CS A18 A19 A20 CS A18 A19
H LHHHHLLCOMXXXXXXXXLLHHXHXXXHXXXHXHXHXXXHXX
H HLHHHLLCOMXXXXXXXXLHHHXH XXXHXXXHXHXHXXXHXX
H HHLHHHL 0L HL L X XXXHXLHLHXXXHXXXHXHXHXXXHXX
1HHL L XXXXHXLHHHXXXHXXXHXHXHXXXHXX
H HHLHHHL L L HL XXXXHXHHXHXXXHXXXHXHXHXXXHXX
HL HL XXXXHXHHXHXXXHXXXHXHXHXXXHXX
H HHLHHHL L HHL XXXXHXHHXHXXXHXXXHXHXHXXXHXX
HHHLXXXXHXHHXHXXXHXXXHXHXHXXXHXX
H HHLHHHL 2LLLHLXXXHXHHXLLLLHXXXHXHXHXXXHXX
3HL L HL XXXHXHHXLHLLHXXXHXHXHXXXHXX
4L HL HL XXXHXHHXLLHLHXXXHXHXHXXXHXX
5HHL HL XXXHXHHXLHHLHXXXHXHXHXXXHXX
6L L HHL XXXHXHHXLLLHHXXXHXHXHXXXHXX
7HL HHL XXXHXHHXLHLHHXXXHXHXHXXXHXX
8LHHHL XXXHXHHXLLHHHXXXHXHXHXXXHXX
9HHHHLXXXHXHHXLHHHHXXXHXHXHXXXHXX
10L L L HHXXXHXHHXHXXXLLLLHXHXHXXXHXX
11HL L HHXXXHXHHXHXXXLHLLHXHXHXXXHXX
12L HL HHXXXHXHHXHXXXLLHLHXHX HXXXHXX
13HHL HHXXXHXHHXHXXXLHHLHXHXHXXXHXX
14L L HHHXXXHXHHXHXXXLLLHHXHXHXXXHXX
15HL HHHXXXHXHHXHXXXLHLHHXHXHXXXHXX
16LHHHHXXXHXHHXHXXXL LHHHXHX HXXXHXX
17HHHHHXXXHXHHXHXXXLHHHHXH X HXXXHXX
L XXXXXXX XXXXXXXXHXHLXHXXXXXXXXXXXXXXXXXX
X HHLHHHL HLLLXLHLHXHHXHXXXHXXXHXL L HXXXHXX
HLLLXHHLHXHHXHXXXHXXXHXL HHXXXHXX
X HHLHHHL LLLLLLLLHXHHXHXXXHXXXHXHX LLLLHXX
HLLLLLLLHXHHXHXXXHXXXHXHXLHLLHXX
LLLLHLLLHXHHXHXXXHXXXHXHXLLHLHXX
HLLLHLLLHXHHXHXXXHXXXHXHXLHHLHXX
LLLLLHLLHXHHXHXXXHXXXHXHXLLLHHXX
HLLLLHLLHXHHXHXXXHXXXHXHXLHLHHXX
LLLLHHLLHXHHXHXXXHXXXHXHXLLHHHXX
HLLLHHLLHXHHXHXXXHXXXHXHXLHHHHXX
X HHLHHHL XLLLXLXHHXHHXHXXXHXXXHXHXHXXXLLL
XLLLXHXHHXHHXHXXXHXXXHXHXHXXXLHL
X HHHLHLH XXXXXLXHHXHHXHXXXHXXXHXHXHXXXLL H
XXXXXHXHHXHHXHXXXHXXXHXHX HXXXLHH
H HHHLH LH XXXXXXXLHXHHXHXXXHXXXLA18HX HXXXHXX
H HHHHL HH XXXXXXXXHXHHXHXXXHXXXLA18HXHXXXHXX

- 14 -
Memory map
6-7. Printer drive circuit
The receipt printer drive circuit is as follows:
00000h CPU internal memory
Mask ROM 128K
RAM 5K
0FFD0h External I/O Mapping 16bytes
0FFE0h
20000h
2CS RAM1 128 K bytes
CONVENTIONAL RAM
RAM2 Oprion RAM3 Oprion RAM4
128 K bytes 512 K bytes 512 K bytes
40000h Bank0 Bank1 Bank2 Bank3 Bank4 Bank5 Bank6 Bank7 Bank8 Bank9 Bank10 Bank11 Bank12 Bank13 Bank14 Bank15 Bank16 Bank17
4CS RAM
Mask ROM Banked area RAM2 and RAM4 are not used for CE-T300.
area (CG) 64 K bytes
1 M bytes
Flash2 Flash2 Flash memory pack 2 M bytes Accelerator Expansion Memory area
Flash pack 512K bytes 512 K bytes Board I/F
Expansion Mapped area
memory Bank0 Bank1 Bank0 Bank1 Bank2 Bank3 Bank4 Bank5 Bank6 Bank7 (Dual port RAM)
256 K bytes
80000h Flash 1
8CS (for Flash2 is not used for CE-T300.
Application
program area)
2 M bytes Bank area 16 M bit
384 K bytes
A0000h 8 M bit
4 M bit
512 K bytes Bank0 Bank1 Bank2 Bank3 Bank4
00,01 08,09 14,15 20,21 26,27 Block No.
(07,06) (0F,0E) (19,18) (17,16) (1F,1E) (Memory Block)
C0000h
CCS
02,03 10,11 16,17 22,23 28,29
(05,04) (0D,0C) (11,10) (15,14) (1D,1C)
E0000h 04,05 12,13 18,19 24,25 30,31
Common area (o3,02) (0B,0A) (09,08) (13,12) (1B,1A)
128 K bytes
Block
06,07
FFFFFh (00,01)

- 15 -
6-8. RS232C port COM1 circuit
The COM1 circuit is as follows:
The COM1 port pin location is as shown below:
Signal Pin
CD 1
RxD 2
TxD 3
DTR 4
GND 5
DSR 6
RTS 7
CTS 8
CI 9
1 2 3 4 5
678 9
6-9. Keyboard selection switch (Not mounted for CE-T300)
The main PCB has the keyboard selection switch to detect the keyboard type.
For the model CE-T300, the switch is not mounted. It is fixed as a stroke key type.
Keyboard selection switch
(Not mounted for CE-T300)
6-10. Flash Pack circuit (Memory Cassette RAC-9)
The Memory Cassette RAC-9 (2 M bytes) is possible to connect to the Flash Pack connector
CN1 of the Main PCB E479-1.
Flash Pack connector
[RAC-9 circuit diagram]

- 16 -
6-11. To mount optional circuit
The following optional circuits are provided for model CE-T300.
1. Clerk key circuit
2. Multi-drawer circuit
3. Paper near end sensor circuit
1) Clerk key kit
NOTE: This circuit is mounted from factory for the destination Germany.
1-1. Prepare the following parts kit for clerk key circuit. The follwing parts kits are supplied from
sales division.
CLK-K19 Clerk key kit for 4 clerks
CLK-K20 Clerk key kit for 6 clerks
CLK-K21 Clerk key kit for 15 clerks
1-2. Check whether the parts of clerk kit are as follows:
1-3. Connect the clerk key cable sub ass'y to the clerk key unit. Also, fix the FG wire by the fixing
pin and the screw.
1-4. Insert the clerk switch unit to the clerk key case.
Clerk cable sub ass'y Clerk key unit
Pin No. Wire color Printed mark on PCB
1 Red C
2 White 1
3 Blue 2
4 Yellow 4
5 Green 8
Turn 2 times
Ferrite core
Clerk key case
Code No. Parts Name Specification Q'ty
10003976 Clerk unit sub ass'y E340843A*1 1
34002576 Clerk key switch unit J-Y7541 1
62482225 Cleak key cable sub ass'y E440785B*1 1
38401238 FG wire fixing pin 23031-1 1
62158913 FG wire E32406-2 1
51115760 Screw 2.6 x 8 ZMC-3 1
55600368 Insulok tie T-18S 2
30304055 Ferrite core L5T18 x 6 x 10 1
10017367 Clerk key case E311204A-2 1
10003979 Clerk key set (4keys) 306JYB-135-02R 1
10011117 Mode key plate E340735A-23 1
10003980 Clerk key set (6keys) 306JYB-135-01R 1
10011785 Clerk key set (15keys) 306JYB-135-03R 1

- 17 -
1-5. Cut off the masking plate of clerk key unit of lower case. Then, set the clerk key case and
unit to the lower case.
1-6. Remove the clerk button unit form the uper case. Then, replace the model key plate.
Remove the mode key plate. Then,
fix new mode key plate.
Upper case
Fix the FG wire from cleark key
unit this position.
Connect the connector cable
to the Main PCB.
Clerk key case
Lower case
Clerk key unit

- 18 -
2) Multi-drawer kit (CE-T300 only Drawer 2)
2-1. Prepare the following parts kit for multi-drawer circuit. The parts kits are supplied from sales
division.
MDL-10 Multi-drawer kit
2-2. Check whether the parts of clerk kit are as follows:
2-3. Connect the drawer connector cable to the main PCB by solder.
Drawer2 Not used Not used
Red
Brown
Black
2-4. Open the back cover of lower cabe to release the 2 screws. Then, connect the necessary
extension cable for drawer. In this case, do no forget to fix the FG wire of the extension
cable to the frame ground by the screw.
Release the 2 screws and open the
back cover of lower case. Connect the extension
drawer cable to the
drawer connector.
Fix the FG wire of the
extension drawer cable by
screw of the parts kit.
2-5. Connect 1 pin FG connector of the drawer extension cable to the drawer 1 pin connector.
Close the back cover of lower case by 2 screws.
Code No. Parts Name Specification Q'ty
10006121 Drawer connector cable E440721A*1 1
62481534 Extension cable for Drawer E440714*1 1
59000209 Screw 3X4ZMC-3. 1