Poor Fusing Service Check; Sharp Black Horizontal Lines Service Check - Lexmark Optra N 4040 Service Manual

4040

Poor Fusing Service Check

FRU
1 Envelope
Position
Lever
2 Fuser Upper
Roller
Fuser Lower
3
Roller
4 Fuser Roller
Pressure
5 Thermistor

Sharp Black Horizontal Lines Service Check

FRU
System
1
Board Con-
nectors
Printhead
2
3 System
Board
Action
The envelope position levers of the fuser are
raised. Push the levers down (18-6).
If the poorly fused spots are uniformly spaced
approximately 126mm apart, the upper fuser
roller could be defective. Replace the roller
(18-20).
If the poorly fused spots are uniformly spaced
approximately 94mm apart, the lower fuser
roller could be dirty. Clean the roller. If it can-
not be cleaned, replace it (18-21).
The pressure between the fuser rolls may not be
correct. This pressure cannot be adjusted. Replace
the fuser (18-1).
The thermistor may have deteriorated.
Replace the thermistor (18-23).
Action
The connectors on the system board could be
loose. Reconnect the J202, J206, and J207
connectors properly.
The printhead connectors could be loose. Recon-
nect J1001, J1, and J6.
The printhead could be defective. Replace it if nec-
essary (4-32).
The system board could be defective (4-9).
Diagnostic Information 2-35