Xerox 4400DT - Phaser B/W Laser Printer, Руководство по обслуживанию, Страница: 163 / 503

3-66 Phaser 4400 Laser Printer Service Manual
Horizontal Streaks Troubleshooting Procedure
Step Actions and Questions Yes No
1 1. Enter Service Diagnostics and select “Engine Test
Print.”
2. Scroll to “Print Quantity” and press OK .
3. Press OK to move the cursor over the last digit, then
press the UP key until the last digit is “5.” Press “Back”
to return to the Engine Test Print menu.
4. Scroll to Print Test Pattern and press OK .
Do the test prints have horizontal streaks?
Go to step 3. Go to step 2.
2 1. Exit Service Diagnostics.
2. When the printer is Ready, scroll to “Printable Pages”
and press OK .
3. Scroll to “Print Configuration Pages” and press OK .
Do the prints have horizontal streaks?
Remove and
reseat the
Image
Processor
Board. If the
problems
persist,
replace the
Image
Processor
Board (RRP
9.2 on
page 6-88 ).
The problem
appears to
be with the
host
computer or
the cables. If
the problems
persist,
replace the
Image
Processor
Board (RRP
9.2 on
page 6-88 ).
3 1. Install a new Print Cartridge.
2. Print a Test Print.
Are the horizontal streaks gone?
Problem
solved. Go to step 4.
4 1. Remove the Print Cartridge.
2. Inspect the metal grounding contacts on the Print
Cartridge Side Guide.
Is the metal grounding contact intact and free of
contamination?
Go to step 5. Reform or
clean the
Metal
Grounding
Contact, so
it makes
better
contact with
the drum
shaft, or
replace the
Print
Cartridge
Side Guide
(RRP 7.5 on
page 6-83 ).
5 Check for the continuity between the metal grounding
contacts and the printer body frame.
Is there continuity between the grounding
contacts and the Printer Frame?
Go to step 6. Replace the
Print
Cartridge
Side Guide
(RRP 7.5 on
page 6-83 ).
6 Inspect the Transfer Roller Assembly for contamination
and wear.
Is the Transfer Roller free of contamination and
wear?
Go to step 7. Replace the
Transfer
Roller
Assembly
(RRP 7.1 on
page 6-79 ).