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4026-0XX
2-12
POST Symptom Table
Symptom Action
POST completes except one or
more LEDs do not come on.
Go to the “Operator Panel Service
Check” on page 2-27.
None of the LEDs come on. Go to the “Operator Panel Service
Check” on page 2-27.
The printer is dead (No LEDs
come on, no motor turns)
Go to the “Low Voltage Power Sup-
ply Service Check” on page 2-22.
The fan does not come on. Go to the “Fan Service Check” on
page 2-17
The fuser lamp does not come on. Go to the “Cold Fuser Service
Check” on page 2-18.
The polygon motordoes not come
on.
Replace the printhead assembly. If
this does not fix the problem, replace
the engine board.
The main drive motor does not
come on.
Go to the “Main Drive Motor Service
Check” on page 2-25.
The paper feed gears do not turn. Go to the “Paper Feed Service
Check” on page 2-34.
The paper feed solenoid picks
and tries to feed paper.
Go to the “Paper Feed Service
Check” on page 2-34.
The toner/print cartridge gears do
not turn.
Go to the “Main Drive Motor Service
Check” on page 2-25.