Symptom Table - Lexmark Optra SC 1275 Service Manual

Symptom Table

Symptom
Blank copies when foils are run.
Machine fails to detect overhead projec-
tion foils.
The printer fails to completely transfer
the image to the paper or does not trans-
fer it at all.
The image transfer roll does not lift when
paper is passing over it.
The toner rack does not go to home
position or lock the rack into colors. The
font print test does not print in black.
Toner cartridge rack does not rotate.
Action
Be sure OHP/Transparencies is
selected in the operator menu.
Go to the "Sensor Service
Check" on page 2-47.
Replace the OHP sheet detec-
tion board (PWB-D2).
Go to the "Sensor Service
Check" on page 2-47 and check
the image transfer roller position
sensor (PC2). If it works prop-
erly, return to this check.
Run a test print. After the paper
has been released, open the top
cover to stop the printing pro-
cess. The image will be on the
transfer belt unit, but the transfer
roller will not be lifted.
Check the transfer roller assem-
bly solenoid (SL5). Do a continu-
ity check of the connector (CN5).
Replace the solenoid if neces-
sary.
If you still have the problem,
replace the mechanical control-
ler board.
Go to the "Sensor Service
Check" on page 2-47 and check
the rack lever sensor (PC12)
and the rack home sensor
(PC4). If they are good, replace
the mechanical controller board.
Go to the "Toner Cartridge Rack
Service Check" on page 2-38.
Diagnostic Information 2-29