Intermittent Black Lines Or Background Bands; Bent Corners (Dog Ears) On Lead Edge Of Narrow Media - Xerox 8825 Service Manual

Intermittent Black Lines Or Background Bands

PROBLEM
Intermittent broken black lines or background bands in the process direction.
CAUSE
Developer bias and Transfer voltage set incorrectly at manufacturing.
SOLUTION
Set the values correctly.
REQUIREMENTS FOR FIELD RESOLUTION
• DOCUMENTATION
N/A
• TAG 19
• PART NUMBERS
N/A
• CUT IN SERIAL NUMBER
N/A
General Procedures
Intermittent Black Lines Or Background Bands, Bent

Bent Corners (Dog Ears) On Lead Edge Of Narrow Media

PROBLEM
Bent lead edge corners (dog ears) on "A" (A4) and "B (A3) -short edge feed" size media may
occur on some printers. This happens primarily when close to the end of the media roll when
the curl is the worst.
CAUSE
This problem occurs in the media transport at the point where the media turns and meets the
registration roll shaft. Because there is no registration feed roll in this area of the transport. the
media catches the edge of the inner extrusion of the media transport.
SOLUTION
( Figure 1): Order a dog ear repair kit 600K62600, remove the transport and install mylar strips
in the area shown in the illustration.
The registration roll and transport design was changed to add an additional set of registration
feed rolls ( TAG 12). Some early machine with this tag did not get marked on the tag matrix.
This transport may be identified in the following manner, without removing it from the machine:
1. Open the cutter drawer .
2. Check the left side of the transport. If the label is marked "12 roll" this kit is not needed
and something else in the media path is causing the problem.
01/02
6-22 8825/8830 Printer