Lexmark C752 Service Manual page 325

See "HCOF system board" on page
Connector
CN14 Low Voltage Power Supply
CN15 Enter Motor
CN16 Punch Motor Homing Sensor/
Drop Timing Sensor/
Inverter Timing Sensor/
Punch timing Sensor
CN17 Accumulator Solenoid
CN18 Communications
CN19 Printer Docking Switch
CN20 CPU Prog
CN21 Fan Connector - not used
CN22 Main Fan
5-28.
Pin no Signal
1 +24 V dc
2 +24 V dc
3 P-Ground
4 P-Ground
1 A+
2 A-
3 B+
4 B-
5 N/C
1 +5 V dc
2 Drop Timing Sensor
3 Ground
4 +5 V dc
5 Punch Home Sensor
6 Ground
7 +5 V dc
8 Punch Timing A Sensor
9 Ground
10 +5 V dc
11 Punch Timing B Sensor
12 Ground
1 SOL+
2 SOL -
1 TxD
2 SG
3 RxD
4 SG
5 FG
1 Switch - PTR Joint
2 N/C
3 Ground
1
20
1 +24 V dc
2 Control
1 +24 V dc
2 Control
5060-2XX
5-31
Connector locations