Lexmark Optra C710 Service Manual page 135

5016-001
FRU
3 Registration Roller
Clutch Assembly
(CL01)
Action
Check the resistance of the registration clutch. It
should measure between 135 and 175 ohms.
Also check from the case of the clutch to either
winding. It should measure infinity. If incorrect
for either, replace the clutch assembly.
Note: The registration clutch cable, (two blue
wires), connect to the CRF cable, (violet and
orange), near the clutch assembly.
Check the voltages on the inline CRF cable
connector.
Registration roller clutch voltages:
Signal
Pin # Voltage
1 (Orange) +24 V dc
2 (Violet) -SL10N
Note: All voltages are approximate
If the voltages are incorrect, check the CRF
cable. If the cable is good, replace the engine
board.
If the voltage on Pin 1 is incorrect, check the
continuity of the CRF cable.
• If incorrect, replace the cable.
• If correct, replace the engine board.
Voltage Voltage
Static Energized
+24 V dc +24 V dc
0 V dc +24 V dc
Diagnostic Information
2-69