Lexmark Optra Color 45 Service Manual page 38

4080-001
Paper does not feed - paper feed motor does not turn
Note: A noisy or chattering motor or a motor that fails to turn can be
caused by:
•
A defective motor
•
A bind in the paper feed mechanism
•
Defective gears
•
Defective engine board
•
Defective power supply (+30 V dc)
FRU
1 Engine Board
2 Paper Feed Motor
3 Power Supply
4 Engine Board
5 Controller Board
Cable
2-16
Service Manual
Action
With (CN6) connected and power on, check the
voltage between Pins 1,2,3,4 and ground. The
voltage should measure between +15 V dc and
+32 V dc when paper is feeding. If the voltage is
correct, replace the engine board.
Check the motor pins between (CN6-1) and
(CN6-2) for approximately 12.5 ohms. Also check
(CN6-3) and (CN6-4) for approximately 12.5
ohms. If incorrect, replace the paper feed motor
assembly. If correct, check the continuity between
each motor pin on the motor connector and the
motor case. If continuity exists, replace the paper
feed motor assembly. If the symptom remains, go
to step 3.
Note: If a short exists in the paper feed motor,
damage to the system board drivers and power
supply may occur.
Disconnect the AC line cord. Disconnect (J2-6)
from the controller board and verify the voltage on
the cable is approximately +30 V dc. If incorrect,
replace the power supply.
Check continuity between (J2-6) on the controller
board and (C10-36) on the system board. If
correct, replace the engine board. If correct, go to
step 5.
Check the continuity of the controller board cable.
If incorrect, replace the cable. If correct, replace
the controller board.