White Out; Back Of Paper Gets Dirty; Low Image Density; Foggy Background - Epson EPL-5900 Service Manual

EPSON EPL-5900/EPL-5900L

3.4.3 White Out

Table 3-12. Print Quality Problem (White Out)
Print Quality
Cause
Problem
Paper is wet
Improper transfer

3.4.4 Back of Paper Gets Dirty

Table 3-13. Print Quality Problem (Back of Paper Gets Dirty)
Print Quality
Cause
Problem
Fusing roller is dirty
Transfer roller is dirty
Paper path is dirty
Troubleshooting
Remedy
Replace paper.
Replace the transfer roller. (p.117)
Replace the high voltage unit (HV1).
(p.130)
Replace the Main Board Assy. (p.120)
Remedy
Replace the Fuser Unit (fusing
roller). (p.125)
Replace the transfer roller. (p.117)
Clean the paper path.
Troubleshooting for Print Quality Problems

3.4.5 Low Image Density

Table 3-14. Print Quality Problem (Low Image Density)
Print Quality
Cause
Problem
No toner in Imaging
Cartridge
Defective OPC drum (life
has expired)
Defective developing bias

3.4.6 Foggy Background

Table 3-15. Print Quality Problem (Foggy Background)
Print Quality
Cause
Problem
Defective developing bias
Defective OPC drum (life
has expired)
Revision B
Remedy
Replace the Imaging Cartridge.
Replace the Drum Cartridge.
Replace the high voltage unit (HV1).
(p.130)
Replace the Main Board Assy. (p.120)
Remedy
Replace the high voltage unit (HV1).
(p.130)
Replace the Main Board Assy. (p.120)
Replace the Drum Cartridge.
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