Printhead ID service check
Action Yes No
Step 1
Ensure the correct laser printhead is installed.
Is the proper laser printhead installed?
Go to step 2. Install the correct laser
printhead.
Go to step 2.
Step 2
Ensure the cables for sockets “MIR MTR” and “VIDEO” on the controller
card are properly connected and not damaged.
Are the above cables properly connected and undamaged?
Go to step 3. Reseat the
connections.
Go to step 3.
Step 3
Reset the machine.
Does the error continue?
Replace the controller
board. See
“Controller
board removal” on
page 422.
Problem resolved.
120 errors
120 error messages
Error code Description Action
120.10 Fuser drive Motor Halls detection error Go to
“Fuser drive motor service check” on page 248.
120.20 Fuser drive Motor took too long to stop
120.30 Fuser drive Motor Unable To Lock (before
motor ID)
120.40 Fuser drive motor over‑speed error
120.60 Fuser drive motor unable to lock (after
motor ID)
120.70 Fuser drive motor out of lock
120.80 Fuser drive motor excessive PWM / over
temperature
7463
Diagnostic information
247
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