Print Quality Problems; Table 5-39. Print Quality Problems - Epson C11C605001 - DFX 9000 B/W Dot-matrix Printer Service Manual

Troubleshooting
5.3.2 Troubleshooting
This section describes how to isolate print quality problems from their possible causes and remedy
them, as shown in Table 5-39.
Possible Cause
Symptom
Low image dens~y
Improper
charging
PRINTER
PRINTER
Window of Opti@l Opttii unit
unit is dirty.
.
Poor image
transfer
Blank print
Window of optical
unit is dirty.
Poor
development
-
Poor image
transfer
Black print
Improper
charging
Window of optical
unit is dirty.
Poor image
transfer
OPC
S-14

Print Quality Problems

Table 5-39. Print Quality Problems

Part Name
Paper
Imaging
cartridge
Optical unit
Imaging
Cartridge
Imaging
cartridge
Optical unit
Imaging
cartridge
En-= Service Manual
Check Item
Check to see if the
paper is moist.
—
—
Check the wi~w of
the optical unit.
—
—
— cartridge.
—
board.
—
board.
—
Replace the HVPS
—
board.
Replace the imaging
—
cartridge.
Clean the window.
—
Replace the BTR roller.
—
Replace the imaging
—
Remedy
Replace the paper.
Replace the imaging
board.
Replace the BTR roller
Replace the imaging
Replace the HVPS
Replace the HVPS
Replace the BTR roller
Rev. A