Troubleshooting For Print Quality Problems - Epson EPL-5800 Service Manual

EPSON EPL-5800

3.1.3 Troubleshooting for Print Quality Problems

When the print quality problems occur, replace the toner cartridge and the drum cartridge
first, and determine either it is caused by each cartridge or caused by the printer.
When it is a print quality problem, measure the generating pitch for abnormal images, and
specify the abnormal part with the table below.
Abnormal
Image
Figure 3-1. Print Image
Table 3-10. Print Quality Problems 1
Pitch Possible Abnormal Part (Diameter)
28mm Sleeve Roller (φ15.7mm)
OPC Drum (φ 30mm)
94.2mm
Transfer Roller (φ 16mm)
50.3mm
Heat Roller (φ 20mm)
62.8mm
Backup Roller (φ 21.6mm)
67.8mm
Troubleshooting
Pitch (mm)
Replacement Unit
Toner Cartridge
Drum Cartridge
Transfer Roller
Fusing Unit
Troubleshooting
Table 3-11. Print Quality Problems 2
Symptom Possible Cause
All White No toner cartridge.
No toner in the toner
cartridge.
No drum cartridge.
Defective OPC drum.
Abnormal laser emission.
0951o211
Improper transfer.
All Black Abnormal laser emission.
Abnormal charging.
0951o213
White Out Paper is wet.
Improper transfer.
0951o220
Revision B
Solution
Install the toner cartridge.
Replace the toner cartridge.
Install the drum cartridge
Replace the OPC drum.
Replace the print head.
Replace the high voltage unit (HV1).
Replace the main control board.
Replace the transfer roller.
Replace the high voltage unit (HV1).
Replace the main control board.
Replace the print head.
Replace the main control board.
Replace the high voltage unit (HV1).
Replace the main control board.
Replace paper.
Replace the transfer roller.
Replace the high voltage unit (HV1).
Replace the main control board.
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