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?
Go to
“LVPS service
check” on page 128.
Replace the main
drive gearbox. See
“Main drive gearbox
removal” on
page 208.
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 132.
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.
4514-330
Diagnostics and troubleshooting
132
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