Connector Summary; Connector Pin Assignments - Epson Perfection 1250 Service Manual

EPSON Perfection 1250/1250 PHOTO

6.3.2 Connector Summary

Connectors used in the scanner are listed below. For their pin assignments,
refer to the tables listed in the right-hand column.
Table 6-2. Connector Summary
Board Connector
CN1
CN2
CN3
Main circuit board
CN4
CN5
CN6
CN1
CCD circuit board
CN2
CN1
Inverter circuit
board
CN2
Panel circuit board CN1

6.3.3 Connector Pin Assignments

The pin assignments for circuit board connectors are shown in the following
tables.
Table 6-3. Main Circuit Board CN1
Pin No.
1
2
Function No. of Pins
AC input 2
USB connector 6
Panel circuit board 7
CCD circuit board 23
CR motor 5
TPU 7
Main circuit board 23
Inverter circuit board 2
CCD circuit board 2
Lamp 2
Main circuit board 7
Signal I/O
+15VDC
GND —
Pin No.
1
2
3
Ref.
4
Table
6-3
6-4
Pin No.
6-5
1
6-6
2
6-7
3
6-8
4
6-3
5
6-9
6
6-9
7
6-10
6-5
Pin No.
1
2
3
4
5
I
6
7
8
9
Table 6-4. Main Circuit Board CN2
Signal
VCC
–Data
+Data
GND
Table 6-5. Main Circuit Board CN3
Signal
5V
GREEN
RED
Push–SW1
Push–SW2
Push–SW3
Push–SW4
Table 6-6. Main Circuit Board CN4
Signal
+15V
GND
B#
B
A#
A
GND
SENSEB
SENSEA
Appendix
I/O
I
I/O
I/O
—
I/O
O
O
O
I
I
I
I
I/O
O
—
I
I
I
I
—
O
O
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