Print Quality Anomaly; Table 5-29. Print Quality Anomaly - Epson EPL-5000 Service Manual

5.4.2 Print Quality Anomaly

This section describes how to isolate a print quality problem from the possible causes.
Symptom Possible Cause
Low image density.
Poor
development
Improper
charging
'
Image transfer
problem
Paper problem
Defective
Improper print
density setting
Foggy background
development
. .
charging
Improper print
density setting in
Defective
Rev.
Laser Service Manual

Table 5-29. Print Quality Anomaly

Part Name
Imaging
cartridge
board
Imaging
cartridge
board
-
Image transfer surface of image
roller
board
Paper
unit
unit
—
Imaging
Drum charge
—
level 2
unit
unit
Check Item
Shake the imaging
Check the toner
in the imaging
Replace the imaging
cartridge.
cartridge.
Replace the PWBF
—
board.
Replace the imaging
— cartridge.
Replace the
—
board.
Check to see if the
Replace the image
transfer roller is transfer roller.
damaged.
Replace the
—
board.
Check to see if paper
is moist.
Replace the
'
unit.
Adjust the print
—
density using
Replace the imaging
cartridge.
—
Replace the
Check the wiring of
developing bias line. board.
Replace the
—
board.
Check the wiring of
Replace the imaging
PC drum charging
cartridge.
bias line.
Adjust the print
—
density in
level 2.
Replace the
—
unit.
Remedy
level 2.
S-11