Lexmark X502N - Printer Service Checks; Main Motor Service Check

2-14 Service Manual
7100-XXX
Printer service checks
Main motor service check
Step Questions / actions Yes No
1 Turn printer off and remove right cover. See
“Right cover removal” on page 4-13.
Open top cover and override top cover
interlock switch. Restart printer, and
observe main motor and photodeveloper
cartridge OPC belt. Does main motor
attempt to turn but OPC belt will not rotate?
Replace photodeveloper
cartridge.
Note: photodeveloper
cartridge is a customer-
ordered supply.
Go to step 2.
2 Observe main motor and fuser. Does main
motor attempt to turn but fuser will not?
Replace fuser assembly.
See “Fuser assembly
removal” on page 4-6.
Note: Fuser is a customer-
ordered supply.
Go to step 3.
3 Are there any unusual noises around main
motor before error posts?
Replace main motor. See
“Main motor assembly
removal” on page 4-26.
Go to step 4.
Go to step 5.
4 Does noise go away? Problem solved. Go to step 5.
5 Is cable properly connected to main motor? Go to step 6. Properly connect cable.
Retest printer. If error
clears, problem solved,
otherwise go to step 6.
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 “Fan/motor and
interlock switch locations” on page 5-6.
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 4-26.
Go to step 9.
Go to step 7.
7 Remove engine controller board shield. See
“Engine controller board removal” on
page 4-34 for steps to remove engine
controller board shield. Disconnect MCN5
from engine controller board. Check for
continuity and shorted pins on cable that
connects MCN5 to main motor. Is cable
okay?
Go to step 8. Replace cable. Retest
printer. If error clears,
problem solved, otherwise
go to step 8.