Xerox 4400DT - Phaser B/W Laser Printer, Руководство по обслуживанию, Страница: 173 / 503

3-76 Phaser 4400 Laser Printer Service Manual
Background
There is toner contamination on all or part of the page. The contamination appears as
a very light gray dusting.
Initial Actions
■
Inspect the printer paper path for items such as staples, paper clips and paper
scraps.
3 Inspect the Transfer Roller Assembly for contamination
and wear.
Is the Transfer Roller free of contamination and
wear?
Go to step 4. Replace the
Transfer
Roller
Assembly
(RRP 7.1 on
page 6-79 ).
4 Warning: If the printer has been switched on,
the Fuser will be hot.
1. Open the Rear Cover and remove the Fuser
Assembly.
2. Rotate the fuser idler gear manually and inspect the
Heat Roller.
3. Open the fuser jam access cover.
4. Rotate the fuser idler gear manually and inspect the
Pressure Roller.
Are the Heat Roller and the Pressure Roller free
of surface defects and contamination?
Go to step 5. Clean or
replace the
Fuser
Assembly
(
page 6-66 ).
5 Replace the following, in order, until the defective
component is found:
■
Transfer Roller Assembly (RRP 7.1 on page 6-79 )
■
Fuser Assembly (RRP 6.2 on page 6-66 )
■
HVPS PWB (RRP 9.6 on page 6-92 )
■
Print Cartridge Side Guide (RRP 7.5 on page 6-83 )
Residual Image Troubleshooting Procedure (cont'd.)
Step Actions and Questions Yes No
s4400_309