Lexmark 3000 Color Jetprinter, Service Manual

Page: 16 / 66

2-4
Power-On Self Test (POST) Sequence
When you turn the printer on it performs a POST. Turn your machine
on and check for a correct POST operation by observing the
following:
1. The lights come on.
2. The carrier moves.
3. The paper feed gears turn.
4. After 30 seconds the carrier moves over the maintenance sta-
tion and caps the printhead.
5. All motors stop and the power light stays on.
If your machine completes POST with no errors, go to the ’Error
Indicator Table’ on page 2-1, locate the symptom and take the
indicated action.
If your machine does not complete POST, locate the symptom in the
following table and take the indicated action.
POST Symptom Table
Symptom Action
No Power On
light and no
motors run Go to the ’Power Service Check’ on page 2-11.
Power light, but
no busy light Replace the system board.
Paper feed
gears do not
turn Go to the ’Paper Feed Service Check’ on page 2-8.
Carrier doesn’t
move Go to the ’Carrier Transport Service Check’ on page
2-5.
Carrier slams
side frame Go to the ’Carrier Transport Service Check’ on page
2-5.