Action Yes No
Step 3
Check the main drive motor for proper operation:
a Remove the main drive gearbox.
Note: Do not disconnect the main drive gearbox cable.
b POR into the Diagnostics menu and perform a feed test:
Diagnostics Menu > Input Tray Tests > Feed Test >
Select any input source
c Check if the main drive motor rotates when doing the feed test.
Does it rotate when doing the feed test?
Replace the controller
board. See
“Controller
board removal” on
page 187.
Replace the main drive
gearbox. See
“Main
drive gearbox
removal” on page
169.
155 errors
155 error messages
Error code Description Action
155.00 No encoder received from auger motor. Go to
“Cartridge gearbox service check” on
page 92.
Cartridge gearbox service check
Action Yes No
Step 1
Is the button aligned with the front of the toner cartridge?
Go to step 2. Go to step 3.
Step 2
a Remove the toner cartridge.
b Clear the paper jam.
Does the problem remain?
Go to step 5. The problem is solved.
Step 3
Remove, and then reinstall the toner cartridge. Make sure that it is
properly seated.
Is the button in the correct position?
Go to step 4. Go to step 5.
4514
Diagnostic information
92
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