5-22 magicolor 330 - Base Engine Service Manual
Primary Fault Isolation Procedures
5.10 - Residual Image or Ghosting
PROBLEM
There are faint ghostly images appearing randomly on the page. The images may be either
from a previous page or from the page curre ntly being printed. THE PRINTER DIS-
PLAYS NO ERROR MESSAGE.
• MCU PWB (RRP 9.123)
• HVPS (RRP 9.120)
Step Actions and Questions Yes No
1CUSTOMER USAGE INSPECTION
Inspect the ghost images.
Was the customer printing numerous copies of the same image?
Go to step 2 Go to step 3
2
Generate a print run of 20 to 30 pages of varying images.
Do ghost images still appear?
Go to step 3 Try to void
printing numer-
ous copies of
the same image
3
XEROGRAPHIC INSPECTION
1. Generate a test print and slide the Fuser Assembly out of the
printer just before the sheet of paper enters the Fuser.
2. Remove the Xerographic Cartridge (RRP 9.48).
3. Inspect the image on the Drum.
Is there a normal test print image, without ghosts, visible on the
drum?
Go to step 5 Go to step 4
4
ERASE LAMP TEST
Use Diagnostics to test the Erase Lamp.
Does the Erase Lamp switch on when you run the Diagnostics
Output Test?
Replace the
Xerographic
Cartridge (RRP
9.48)
Replace the
Erase Lamp
(RRP 9.51)
5
IBT INSPECTION
Inspect the image on the su rface of the IBT?
Is there a normal test print image, without ghosts, visible on the
surface of the IBT?
Go to step 6 Replace the
Belt Cleaner
Assembly (RP
9.76)
RS510X