Transport Service Check - Lexmark Optra Color 40 Service Manual

4092-010

Transport Service Check

FRU
1 Transport Motor
2 Engine Board
3 Carrier Guide Rod
4 Transport Belt
Idler Pulley Parts
Carrier Frame
5 Encoder Strip
6 Printhead Cable
Encoder Strip
Encoder Card
Engine Board
7 Maintenance
Station
Action
Check the motor for binds, or loose motor pulley.
Disconnect the transport motor (J4) from the
engine board. Check for 8 to 18 ohms between
pins 1 and 2 on the motor cable. If the reading is
incorrect, replace the motor.
Check for motor pins shorted to the motor housing.
If you find a pin shorted to the housing, replace the
motor. If the failure remains, replace the engine
board.
Turn the printer off and disconnect J4 from the
engine board. Turn the printer on and check for a
pulse of 6 to 8 V dc between J4-1 and ground as
the printer goes through POST.
Clean the carrier rod.
Note: Lubricate the rod and the carrier rod bearing
surface with Nyogel 744 (P/N 99A0394) grease or
equivalent.
Check for worn, loose or broken parts. Check for
obstructions blocking carrier movement.
Carrier to carrier frame engagement should be
lubricated with white Nyogel 744 (P/N 99A0394)
grease or equivalent.
Check for wear and dirt.
Be sure all connectors are fully seated. Check the
cables for damage.
"Encoder Sensor Test" on
Perform the
page 3-3
. If you cannot enter the test, replace the
engine board.
A problem with the maintenance station can cause
carrier movement problems at the right margin. Go
"Maintenance Station Service
to the
Check" on page 2-8
.
Diagnostic Information
2-17