Lexmark 5021-0XX User Manual
Page 110
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2-32
Service Manual
5021-0XX
5
If waste toner bottle is
removed, reinsert it.
Ensure rear cover
assembly cover is shut.
Override top and front
cover interlock switches.
For location, see
“Interlock switch
locations” on page 5-8
Reconnect operator panel.
Turn printer on. Does 902
error reappear?
Go to step 6.
Problem solved.
6
Turn printer off and remove
engine controller board
shield. See
controller board removal”
on page 4-55
for steps to
remove shield. Check cable
that connects I2CN on
engine controller board to
DCN3 on I/O board for
proper connection,
damage, pin shorting and
continuity. Is cable okay?
Replace engine
controller board.
See
controller
board removal”
on page 4-55
Replace cable.
Step
Questions / actions
Yes
No
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