CASIO IOPB11 Service Manual
SERVICE MANUAL
INDEX
(without price)
ELECTRONIC CASH REGISTER OPTION I/O BOARD
I/O-PB-11 (EX-I/O-PB-11)
NOV. , 1994
FOR MODEL: CE-4700
TK-1300
TK-2300
TK-2700
TK-5100
CONTENTS
IN/ON-LINE BOARD I/O-PB-11 Page
1. TO INSTALL THE I/O-PB-11......................................................................... 1
2. INTERFACE .................................................................................. 3
2-1. C-In line (ECR to ECR) ......................................................................... 3
2-2. On line .................................................................................. 6
3. CIRCUIT EXPLANATIONS............................................................................ 8
3-1. Address selection.................................................................................. 8
3-2. Scale buffer circuit................................................................................. 9
3-3. On line circuit (RS-232C) .................................................................... 10
3-4. C-In line circuit ................................................................................ 12
4. DIAGNOSTIC OPERATIONS...................................................................... 15
4-1. To start the diagnostic operation......................................................... 15
4-2. Check Items for I/O-PB-11 .................................................................. 16
4-3. Operations ................................................................................ 16
5. ERROR CODE LIST ................................................................................ 24
6. IC DATA ................................................................................ 27
7. PARTS LIST ................................................................................ 30
8. PCB LAYOUT ................................................................................ 32
9. CIRCUIT DIAGRAM ................................................................................ 33
IN/ON-LINE BOARD I/O-PB-11
1. TO INSTALL THE I/O-PB-11 (for model CE-4700, TK-1300, TK-2300, TK-2700, TK-5100)
1) Plug of f t he A C c or d from outlet and turn the mo de s witch to REG m ode for
dis c har ge of elec trolyti c ca pacitors.
2) Open the upp er c as e and remov e the Ni- c d batter y c onnector. To open u pper
case, refer section 8 of disassembly in each ECR service manual.
3) In case of using scale, cut off the masking cover for scale.
4) Replace the ROM for necessary version.
5) Mount necessary RAM chips to main PCB.
6) Mount the two locking supporters on the PCB.
7) Connect the I/O-PB-11 and main PCB by two cables carefully caused the
cable lines ar e ver y nar r ow.
8) Connect the F.G. wire of I/O-PB-11 to the F.G. plate by screw.
9) Conne c t t he Ni-c d batter y c onnect or to the m ain PCB .
10) Perform the MAC operation and chec k whet her the machine is norm al condi-
tion .
11) Power off and close the upper case by screw.
In-line connector
— 1 —
Scale cable
SCL-CB-10
Cut the masking cover for ON-line
connector.
Cut the masking cover for scale.
Cut the masking cover for In-line
connector
Locking supporters
I/O-PB-11
Check whether those capacitors are lying.
Cut the masking
part if necessary.
Cable fixing plate
Cable supporter
— 2 —
In-line cables
Scale cable
2. INTERFACE
2-1. C-In line (ECR to ECR)
1) C-In line connection diagram
The maximum C-In line cable length and the maximum connection unit will be
varied by the in-line communication speed as shown below list.
[C-In line cable wiring]
Master Satellite SatelliteSatellite
Terminater (100 ohms)
C-In line communication speed Maximum Maximum
(Baud rate) connection unit cable length A ( m )
1.25 M bps 8 86
625 K bps 12 200
312.5 K bps 20 430
156.25 K bps 32 890
Total cable length is max. A m
Terminater (100 ohms)
2) C-In line cable, Connector, and Terminater
C-In line cable
Code No. Parts name Specification
1904 4023 In-line cable IPEV-SLA0.5x1P
C-In line connector
Code No. Parts name Specification
3500 5820 In-line connector kit XLP-KIT-1
Terminater
Code No. Parts name Specification
2600 2516 Carbon film resistor R-25-100-J
3) Cable connection diagram
Signal Pin Signal Pin
SD 1 SD 1
RD 2 RD 2
FG FG plate FG FG plate
(Master side) (satellite side)
— 3 —
4) To fix C-In line connector to ECR.
Connect the C-In line cable and C-In line connector as shown below:
[Connector on the end of C-In line]
Terminal cap
C-In line cable
Wrap bent shield wire
with Copper tape.
Shield wire
[Connector between ECRs]
Red
Terminater (100 ohms)
Red
Red
BlackBlack
C-In line connector
Notes:
1.Use crimp tool for connecting terminal caps.
2.If crimp tool is not available, connect
the wires with solder instead of terminal cap. After the soldering, insulate
the wires with vinyl tape.
Terminal cap
C-In line cable
Wrap bent shield wire
with Copper tape.
Shield wire
Black
Red
Black
C-In line connector
Notes:
1.Use crimp tool for connecting terminal caps.
2.If crimp tool is not available, connect
the wires with solder instead of terminal cap. After the soldering, insulate
the wires with vinyl tape.
— 4 —
Connect the C-In line
connector as shown below:
C-In line cable
Cable fixing plate
Connect to C-In line connector.
6) C-In line cable specification
1. Structure
Conductor Material: Tin plated mild copper twist
Cross section area: 0.5mm
Construction: 20 pieces/0.18 mm
O.D. 0.95 mm
Insulation Material: Polyethylene
Thickness 0.3 mm
Sheath Material: PVC
Thickness 1.3 mm
Finished O.D.: 6.0 ~6.5 mm
Approx. weight: 55 kg/km
2. Properties (20°C)
Maximum conductor resistance 38.7 Ω/km
Minimum insulation resistance 10 kMΩ•km
Electric strength AC350 V/1 minute
Electrostatic capacity (Standard) 75 nF/km
2
Cable supporter
Part of copper tape
— 5 —
2-2. On line
(1) Direct connection to P/C
ECR
Cable length = Max. 15m
[Cable]
1) Wiring diagram (A) A SYNC.
PC-DOS
Personal
Computer
SIGNAL PIN
GND 1
ER 3
SD 4
RS 5
RD 7
CS 8
CD 9
DR 10
CI 13
2) Parts list
No. Code Number Part Specification
1 3612 0762 DIN 13P PLUG TCP9361-71-111
PIN SINGNAL
2SD
3RD
4RS
5CS
6DR
7SG
8CD
20 ER
2 3513 1019 Junction shell DB-C2-J9
3 3510 2043 Shell connector DB-25S
4 Cable PLGW-3456-01A
— 6 —
(2) MODEM connection
[Cable]
1) Wiring
SIGNAL PIN
ECR
GND 1
ER 3
SD 4
RS 5
MODEM
Cable length = Max. 15m
PIN SINGNAL
2SD
3RD
4RS
5CS
NC 6
RD 7
CS 8
CD 9
DR 10
NC 11
NC 12
2) Parts list
No. Code Number Part Specification
1 3612 0762 DIN 13P PLUG TCP9361-71-111
2 3513 1019 Junction shell DB-C2-J9
3 3510 2043 Shell connector DB-25S
4 Cable PLGW-3456-01A
CI 13
6DR
7SG
8CD
15 –
17 –
20 ER
22 CI
24 –
— 7 —
3. CIRCUIT EXPLANATIONS
D
0
3-1. Address selection
V+
C7
V-
GND
IC14
1
3
32
2
IC1
IC4
R2
2
3
IC4
R1
4
5
IC14
9
D7
10
D6
D5
D4
D3
D2
-12V
D1
D0
+12V
IC1
6
7
5
IC4
4
5
IC4
76
IC4
910
C8
C9
IC4
C10
12
11
C11
IC1
10
9
IC4
15
14
VCC
C23
GND
GND
GND
IRQ
GND
WR
GND
RD
GND
A7
GND
D6
GND
D5
GND
D4
GND
To E570-1To E570-1
D3
-12V
D2
-12V
D1
12V
D0
12V
GND
GND
GND
GND
VCC
VCC
IOCS
VCC
RESET
VCC
VCC
+12V
+
-12V
1
2
3
4
5
6
7
8
9
D7
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
C1 C6
+
R9
1
A3
2
R8
3
A2
4
R7
5
A1
6
R6
7
A0
8
9
10
R5
11
12
R4
13
14
R3
15
E
16
CS for IC10
(C-In line controller)
IC17
1
1G
2
1A
3
1B
4
1Y0
5
1Y1
6
1Y2
7
1Y3
8
GND
GND
VCC
16
VCC
15
2G
14
2A
13
2B
12
2Y0
11
2Y1
10
2Y2
9
2Y3
C31
IC12
11
13
IC14
12
R27
12
11
13
CLK for IC9
RDTM
IC14
4
6
5
8
IC12
IC12
IC15
C30
GND
C33
GND
4
IC15
1
2
4
5
10
IC15
11
IC12
2
1
3
IC15
9
3
VCC
8
10
C37
GND
R26
R25
D2
D3
GND
D4
D5
D6
D7
R10
C29
IC5
5
6
6
8
9
12
13
C32
IC16
1
Q12
2
Q6
3
Q5
4
Q7
5
Q4
6
Q3
7
Q2
8
GND
IC7
1
D2
2
D3
3
RXD
4
GND
5
D4
6
D5
7
D6
8
D7
9
TXCLK
10
WR
11
CS
12
C/D
13
RD
14
RXRDY
R11
16
VCC
15
Q11
14
Q10
13
Q8
12
Q9
11
RST
10
CLK
9
Q1
USART
28
D1
27
D0
26
VDD
25
RXCLK
24
DTR
23
RTS
22
DSR
21
RESET
20
CLK
19
TXD
18
TXEMP
17
CTS
16
SYNC
15
TXRDY
VCC
C36
GN
D1
D
According to the address of main CPU, the decorder selects the following optional devises.
IC No. Pin No. CPU address Descriptions
IC17 4 1Y0 0034H & RD="L" RDTM gate enable of IC8 (For scale data read)
10 2Y2 0036H Chip selection of C-In line controller
IC14 11 CLK 0034H & WR="L" Clock signal of IC9 (For C-In line controller data)
IC15 6 CS 0030H Chip selection of USART (Data)
0031H Chip selection of USART (Control status)
— 8 —
D1
D2
D3
ENABLE
D0
CLOCK
D6
D7
RDTM
3-2. Scale buffer circuit
When a measured object is put on the scale, the scale starts weighing. During
weighing, MO signal is "H". When the weighing is finished with indication of the
weight of measures object, the MO signal becomes "L".
Then EN signal is output to the scale and the scale output the weight data
(D0~D3) to the scale buffer.
9
IC5 IC1
11
IC5
8
10 14
11
12
15
IC1
13
7
IC8
19
C19
14 6
1
515
19
IC8
1
NC
Vcc
1
2 3 4 5 6 7
1
GND
R13
R14
R15
R16
R17
R18
18 2
3
19
16 4
IC8
1
IC8
IC8
1
17
IC8
2 3 4 5 6 7
CA1
RA1
GND
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NC
NC
NC
NC
NC
D1
D2
D3
ENABLE
D0
CLOCK
MOTION
RANGE
GND
GND
To E570-1
GND
Vcc
Vcc
Vcc
Pin description of scale connector
Pin No. Signal Name Descriptions
1 NC Non connection
2 NC Non connection
3 NC Non connection
4 NC Non connection
5 NC Non connection
6 NC Non connection
7 D1 Data
8 D2 Data
9 D3 Data
10 ENABLE Enable signal
11 D0 Data
12 CLOCK Clock signal
13 MOTION Motion signal
14 RANGE Out of range signal
15 GND GND
16 GND GND
— 9 —
3-3. On line circuit (RS-232C)
1. Baud rate selection for On line (RS-232C)
Basic clock (307.2 KHz) is divided into seven clocks by binary counter IC16 and
they are supplied to D0~D6 terminals of multiplexer IC13. The IC13 outputs one
clock to USART according to the condition of select signals A, B, and C.
C32
IC16
1
Q12
2
Q6
3
Q5
4
Q7
5
Q4
6
Q3
C33
7
Q2
8
GND
GND
IC7
1
D2
D2
2
D3
D3
3
RXD
4
GND
D4
D5
D6
D7
R10
10
11
12
13
14
RXCLK
GND
5
D4
6
D5
7
D6
8
RESET
D7
9
TXCLK
WR
TXEMP
CS
C/D
SYNC
RD
TXRDY
RXRDY
VCC
RST
VCC
16
15
Q11
14
Q10
13
Q8
12
Q9
11
10
CLK
9
Q1
C36
GND
28
D1
27
D0
26
25
24
23
22
21
20
19
18
17
16
15
VDD
DTR
RTS
DSR
CLK
TXD
CTS
D1
D0
C38
GND
VCC
+
C21
C22
IC5
34
R36
3
C34
IC13
1
D3
2
D2
3
D1
4
D0
5
Y
6
W
7
G
8
GND
GND
IC5
12
R12
1
X1
2
GND
VCC
VCC
16
15
D4
14
D5
13
D6
12
D7
11
A
10
B
9
C
VCC
VCC
20
19
Q8
18
D8
17
D7
16
Q7
15
Q6
14
D6
13
D5
12
Q5
11
CLK
D2
D3
D4
D6
R19
IC9
1
CLR
2
GND
Q1
3
D1
4
D2
5
Q2
6
Q3
7
D3
8
D4
9
Q4
10
GND
C20
D1
D0
D5
D7
C5
R11
GND
Output of IC16
Q3 38.4 K
Q4 19.2 K
Q5 9,600
Q6 4,800
Q7 2,400
Q8 1,200
Q9 600
Q10 300
Truth table of IC13
Input Output
ABCY
LLLD0
HLLD1
LHLD2
HHL D3
LLHD4
HL HD5
LHHD6
HHHD7
— 10 —
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