Service Checks; Carrier Transport Service Check - Lexmark X125 Service Manual

4412-00X

Service Checks

Carrier Transport Service Check

FRU
1 System Board
Carrier Transport
Motor
2 Carrier Transport
Motor
3 Carrier Guide Rod
Action
Check the carrier transport motor connector P4. If
connected, check for approximately 29 volts on
pins 1 and 2 or at the wire connections located on
the rear of the carrier transport motor. If voltage is
incorrect, replace the system board. If voltage is
correct, check the motor for shorts.
Check the motor for binds, or loose motor pulley.
A noisy or chattering motor, or a motor that fails to
turn, can be caused by:
•
An open or short in the motor
•
An open or short in the motor driver
on the system board
•
A bind in the carrier transport
mechanism
With the carrier transport motor cable (P4)
disconnected from the system board, check for 0
to 16 ohms between the following pins on the
motor:
P4-1 and P4-2
If the readings are incorrect, replace the print
engine. Go to the
Removal" on page
Clean the carrier rod.
Note: Lubricate the rod and the carrier rod bearing
surfaces with grease P/N 99A0394.
"Carrier Transport Motor
4-23.
Diagnostic Information
2-7