Lexmark Optra Color 40, Service Manual

Page: 35 / 95

Diagnostic Information
2-17
4092-010
Transport Service Check
FRU Action
1 Transport Motor 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.
2 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.
3 Carrier Guide Rod Clean the carrier rod.
Note: Lubricate the rod and the carrier rod bearing
surface with Nyogel 744 (P/N 99A0394) grease or
equivalent.
4 Transport Belt
Idler Pulley Parts
Carrier Frame
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.
5 Encoder Strip Check for wear and dirt.
6 Printhead Cable
Encoder Strip
Encoder Card
Engine Board
Be sure all connectors are fully seated. Check the
cables for damage.
Perform the
“Encoder Sensor Test” on
page 3-3
. If you cannot enter the test, replace the
engine board.
7 Maintenance
Station A problem with the maintenance station can cause
carrier movement problems at the right margin. Go
to the
“Maintenance Station Service
Check” on page 2-8
.