Lexmark X543 series Service Manual page 97

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Step Questions / actions
4 Enter the Diagnostics Menu (turn the printer
off, press and hold
on, and release the buttons when installed
memory and processor speed displays), and
run the appropriate cartridge drive motor test
for the missing color:
1. Select MISC TESTS in the Diag Menu, and
press Select (
2. Select Motor Detect.
Remove Cartridge. press Select appears.
Note: Do not press Select yet.
3. Remove all toner cartridges and the
imaging unit.
4. Close the front cover.
If you press Select before closing the front
cover, a message appears: Close Cover.
press Select.
5. press Select (
Motor Detection In Progress... appears. The
motor detection process takes about 10
seconds, and stops automatically.
Detect Complete. Rebooting... appears, and
the printer performs a POR (Power On
Reset).
Did the motor run?
5 Remove the developer unit. See
unit removal" on page
developer cartridge contacts from the HVPS to
the IU.
Are all the toner cartridge contacts clean on
both the Pin and IU?
6 Are all the spring-loaded Pin in the HVPS free
to move in and out with an equal amount of
spring force?
7 Turn the printer off, and remove the rear shield.
See "Rear shield removal" on page
Check the continuity between the spring-
loaded Pin and the JSC1 connector on the
controller board.
Are all conductors continuous?
8 Replace the printhead. See
removal" on page
Did this fix the problem?
and , turn the printer
).
).
"Developer
4-30. Check the
4-7.
"Printhead
4-42.
Yes
Go to step 5.
Go to step 6.
Go to step 7.
Go to step 8.
Problem resolved.
7525xxx
No
Replace the Main drive gear
assembly. See "Main drive
gear assembly with motor
removal" on page 4-39.
Clean the developer
cartridge contacts. See
"Developer unit removal"
on page 4-30.
Replace the HVPS. See
"High-voltage power
supply (HVPS) assembly
removal" on page 4-24.
Replace the cable.
Replace the controller
board. See "Controller
board removal" on
page 4-16.
2-53
Diagnostic information