Lexmark 1020 - Manual (Page 17)

Diagnostic Information 2-7
4078-00X
Envelope Feed Service Check
6 Home Position
Sensor Perform the “EOF and Home Position Sensors
Test” on page 3-2 , to check the Home Position
Sensor. If you cannot enter the test, replace the
system board. If the test fails, turn the printer off
and disconnect CN5 from the system board. Turn
the printer on and check for 5 V dc between CN5-1
and ground, at the system board. If the voltage is
present, replace the home position sensor. If the
voltage is not present, replace the system board.
7 Maintenance
Station A problem with the maintenance station can cause
carrier movement problems at the right margin. Go
to the
“Maintenance Station Service Check” on
page 2-8 .
FRU Action
1 Envelope Guide Be sure the envelope guide has been turned to
the envelope load position.
Be sure the envelope guide is against the
envelopes.
Perform the “Paper Feed Service Check” on
page 2-9 .
FRU Action