Lexmark 1020 - Manual (Page 13)

Diagnostic Information 2-3
4078-00X
POST Symptom Table
Symptom Action
No Power On
light and no
motors run Go to the “Power Service Check” on page 2-12 .
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 2-9 .
Carrier doesn’t
move Go to the “Carrier Transport Service Check” on page
2-6 .
Carrier slams
side frame Go to the “Carrier Transport Service Check” on page
2-6 .