Lexmark Optra C710 Service Manual page 183

5016-001
FRU
4 CST Cable
Engine Board
H Paper Jam 24x displays, media is detected and fed from tray x
and paper jams over the paper pass sensor in the base printer.
FRU
1 Paper Pass
Sensor:
• Flag
• Spring
• Board
MK2 Cable
Engine Board
Action
Check continuity of the cable.
• If incorrect, replace the cable.
• If correct, replace the engine board.
Action
Check the paper pass sensor flag and spring for
correct operation and broken or loose parts. If a
problem is found, repair as necessary.
The voltages for the paper pass sensor can be
checked at the 6 pin inline cable connector,
located in the HVPS to engine board cable
harness above the temperature/humidity board
assembly, on the left side of the printer.
Voltages on the inline connector.
Pin # Voltage
Static
3 (Orange) +5 V dc
4 (Blue) +5 V dc
5 (Brown) +5 V dc
6 (Green) 0 V dc
Note: All voltages are approximate.
• If the voltage on pin 3 is incorrect, check
continuity of the cable. If incorrect and If the
cable is good, replace the engine board.
• If the voltage on pin 3 is correct but the voltage
on pin 4 is incorrect, replace the following parts
in the order shown:
1. Paper pass sensor board assembly
2. Engine board
3. MK 2 cable
Voltage
Feeding
+5 V dc
0 V dc to +5
0 V dc to +5
0 V dc
Diagnostic Information
2-117