Lexmark 1000 - Manual (Page 13)

Diagnostic Information 2-1
4096-00X
2. Diagnostic Information
Start
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 carrier moves.
2. The paper feed gears turn.
3. After 30 seconds the carrier moves over the maintenance
station and caps the printhead.
4. All motors stop.
If your machine does not complete POST, use the symptom tables
and service checks in chapter 2 to determine the failing part.