Canon BJ-W9000 Service Manual page 308

Part 5: Maintenance
8. CONNECTOR POSITIONS AND PIN ARRANGEMENT
8.1 System Controller
A40
B40
B1
B40
B1
A1
J401
Pin No.
1 B25
2 A25
3 B24
4 A24
5 B23
6 A23
7 B22
8 A22
9 B21
10 A21
11 B20
12 A20
13 B19
14 A19
15 B18
16 A18
17 B17
18 A17
19 B16
20 A16
4 1 4
1
B1 B40
J411 J410
J407
J408 J409
A1
A1 A40
A1
A40
16
J401
20 1
15
Figure 5-38 System Controller
Signal IN/OUT
GND --
ATN IN
GND --
GND --
GND --
BSY IN/OUT
GND --
ACK IN
GND --
RST IN
GND --
MSG OUT
GND --
SEL IN/OUT
GND --
C/D OUT
GND --
REQ OUT
GND --
I/O OUT
1 4
B1
B40
A40
A1
B1
B30
A30
A1
B1
B25
30
A25
J412
1
Function
GND
SCSI control signal (Attention)
GND
GND
GND
SCSI control signal (Busy)
GND
SCSI control signal (Acknowledge)
GND
SCSI control signal (Reset)
GND
SCSI control signal (Message)
GND
SCSI control signal (Select)
GND
SCSI control signal (Control/Data)
GND
SCSI control signal (Request)
GND
SCSI control signal (Input/Output)
5-88
BJ-W9000