Print Quality Trouble Fip; Print Quality Troubleshooting Entry Chart - Epson AcuLaser C2800 Service Manual

AcuLaser C2800/C2800D/C3800/C3800D

3.5 Print Quality Trouble FIP

3.5.1 Print Quality Troubleshooting Entry Chart

Figure 3-4. Print Quality Troubleshooting
The printing-quality troubleshooting described here is based on a
C H E C K
P O I N T
condition that the printer controller (BOARD ASSY, MAIN) has no
problems. However, making a test print with only the engine side,
allows you to find out roughly which side (controller side or engine
side) is causing the trouble, except for cases that cannot be checked
by the test print.
Test print with the engine alone is normal →
Printer controller trouble
Test print on engine alone is abnormal →
Printer engine trouble
If the probable cause is "printer controller trouble," replace the
printer controller and interface cable with a normal one and check
if the printer returns to normal.
If the trouble recurs after replacing with the normal parts, check
the printer controller and use the printer quality FIPs to perform
efficient troubleshooting.
TROUBLESHOOTING
To reliably judge and understand the trouble to perform the correct remedy efficiently
when a print quality-related trouble occurs, make a test print, and use the FIPs
described in the following pages.
When the trouble still occurs even after performing the troubleshooting according to
the FIP, check again using the FIP, and then replace the parts indicated as "Possible
parts" one by one checking if the printer returns to normal.
The printing quality-related FIPs are provided as follows for the typical symptoms.
FIP-P1 "The printed image is light or faint"
FIP-P2 "A white page is printed"
FIP-P3 "A black page is printed"
FIP-P4 "Vertical white bands or lines appear on printed pages"
FIP-P5 "Horizontal white bands appear on printed pages"
FIP-P6 "Vertical lines appear on printed pages"
FIP-P7 "Horizontal lines appear on printed pages"
FIP-P8 "Irregular areas of missing image appear on the printed page"
FIP-P9 "Toner smudges across the printed pages"
FIP-P10 ""Ghost images" appear on the printed page"
FIP-P11 "Printed pages have a dark or dirty background"
FIP-P12 "The printed image is skewed"
FIP-P13 "Printed page is wrinkled, folded, or torn"
FIP-P14 "Toner is not fused to the print media"
FIP-P15 "Colors are displaced"
Print Quality Trouble FIP
Revision C
135
Confidential