Residual Image; Black Spots - Digital Equipment DEClaser 3200 Service Manual

7.11 Residual Image

7.11 Residual Image
Description: Images from recent prints are dimly printed over the current
image. This can be caused by poor print drum or fusing roller cleaning or by a
damaged heat roller.
Troubleshooting: Print several copies of the 1948 Setup pattern, as shown in
Section 3.3. Use the following procedure if you see residual images:
1. Make sure the paper or any special stock meets specification listed in
Appendix B.
2. Inspect and clean both registration rollers.
3. Make sure a fuser cleaning pad is installed. Remove and inspect the fuser
cleaning pad.
4. Inspect and clean the prefuser transport roller.
5. If the defect occurs at intervals of approximately 4.92 in (124mm), replace
the print cartridge.
6. If the defect occurs at intervals of approximately 3.75 in (95mm), replace
the fusing unit.
7. Go to Section 7.16 and verify the operation of the erase LEDs.

7.12 Black Spots

Description: Random or sequential black spots in the white areas
of the print. Black spots are caused by leaking toner, a damaged
roller, or by the failure of some cleaning process. The following
specifications applies to spots:
•
•
•
Troubleshooting: Print several copies of the light dusting test
pattern, as shown in Section 3.3. If black spots are present, perform
the following procedure:
1. Make sure a fuser cleaning pad is installed. Remove and inspect
2. Go to Section 7.16 and verify the operation of the erase LEDs.
7–16 Image Defects FIPs
Spots must be no larger than 0.5 mm.
There must be no more than one spot measuring between 0.4–0.5
mm on any print.
Any spot less that 0.25 mm,is acceptable.
the cleaning pad for damage or contamination.