Iq 4 Black/White Spot - Xerox WORKCENTRE 3119 Service Manual

Image Quality

IQ 4 Black/White Spot

Description
Dark or blurry black spots occur periodically on the print.
White spots occur periodically on the print.
3-6
Check and Cause
1. If dark or blurry black spots occur
periodically, the rollers in the Devel-
oper may be contaminated with for-
eign matter or paper particles.
(Charge roller: 37.8 mm interval
OPC drum: 75.5 mm interval)
2. If a black image is partially bro-
ken, the transfer voltage is abnor-
mal or the transfer roller's life has
expired.
3. If faded areas or voids occur in a
black image at intervals of 75.5
mm, or black spots occur else-
where, the OPC drum surface is
damaged.
06/06
Solution
1. Run Clean Drum, GP 3 several
times.
2. Clean all the following parts:
• Toner cartridge contacts, PL 1
• SMPS/HVPS contacts, PL 1
• MEC-TERMINAL, PL 3
• IPR-P-Terminal CON, PL 3
Install new parts as necessary:
• Toner Cartridge
• SMPS/HVPS
3. - 75.5mm repitition:Examine the
surface of the OPC drum in the
toner cartridge, PL 1, and carefully
clean with a soft, lint free cloth. If
the problem still persists, Install a
new toner cartridge, PL 1.
- 38.8mm repetition: Install a new
toner cartridge, PL 1.
WorkCentre 3119