Printing-Quality Troubleshooting (Pqt); Print Quality Trouble List - Epson AcuLaser C2600 Service Manual

EPSON AcuLaser C2600/2600

3.4 Printing-quality troubleshooting (PQT)

This section describes troubleshooting procedures for common print quality troubles.
With reference to the Print Quality Trouble List, find out the trouble you faces and
follow the corresponding PQT, which is provided for each of the symptoms on the
following pages.

3.4.1 Print Quality Trouble List

Defect
Print-quality trouble
sample
Completely blank pages are printed
PQT_001
Printed in solid All area of the printout is covered with a
color solid color
All area of the printout is covered with a
solid color except the left, right, top and
bottom margins
PQT_002
White or color spots It occurs cyclically
appear on the
It does not occur cyclically
printout
PQT_004
Vertical white They appear on the same position for the
streaks or bands four colors
appear on the
The position is different between the four
printout
colors, or appear only on a certain color
The position is the same for each print job
except the beginning position.
PQT_006
Troubleshooting
Defect
sample
PQT_008
PQT
PQT1
PQT_010
PQT2
PQT_011
PQT3
PQT4
PQT_015
PQT5
PQT6
PQT7
PQT_019
PQT8
Printing-quality troubleshooting (PQT)
Print-quality trouble
Vertical color They appear on the same position for the
streaks or bands four colors
appear on the
The position is different between the four
printout
colors, or appear only on a certain color.
Vertical lustered streaks or bands appear on the printout
Images are not Ghost or toner offset (missing area on
printed correctly image) occurs
Toner smudges appears
The background is dark or dirty
The non-printed side of the page is dirty
The printed image is All of the four colors are too dark
light or faint, or too
Only a certain color is too dark
dark
All of the four colors are light and faint
Only a certain color is light and faint
Inconsistencies in It occurs cyclically
density appears in
It occurs on a certain color
the paper feed
It occurs at random
direction
Revision B
PQT
PQT9
PQT10
PQT11
PQT12
PQT13
PQT14
PQT15
PQT16
PQT17
PQT18
PQT19
PQT20
PQT21
PQT22
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