Lexmark 5021-0XX - Manual (Page 127)

Diagnostic information 2-49
5021-0XX
6 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. Allow
printer to run until error
posts. Disconnect
connector from main motor
and check the following on
disconnected cable
connector:
Pin 4 to pin 5—24VDC
Pin 6 to pin 5—24VDC
Pin 10 to pin 5—5VDC
Are voltages present?
Replace main
motor. See
“Main motor
assembly
removal” on
page 4-38
. Go
to step 9.
Go to step 7.
7 Remove I/O board shield.
See
“I/O board removal”
on page 4-70 for steps to
remove I/O board shield.
Disconnect DCN12 from
I/O board. Check for
continuity and shorted pins
on cable that connects
DCN12 to main motor. Is
cable okay?
Go to step 8. Replace cable.
Retest printer. If
error clears,
problem solved,
otherwise go to
step 8.
Step Questions / actions Yes No