Lu-202Xl Black Line At 104Mm, 208Mm From Leading Edge 614Mm From Trailing Edge Or Narrow Trailing Space (Magnification Defect) - Konica Minolta AccurioPress C2070 Troubleshooting Manual

4.2.4. LU-202XL Black Line at 104mm, 208mm from leading edge
614mm from trailing edge or narrow trailing space
(magnification defect)
(1) Symptom
When the thick long paper more than 217gsm is fed from LU-202XL, black line occurs at 104mm
and 208mm from leading edge, and 614mm from trailing edge. Or the blank area at trailing
edge becomes narrow.
104m
208m
(2) Cause
The pre-registration roller of LU assists to feed long paper more than 217gsm.
At that time, if the speed is different between main body registration roller and the LU pre-
registration roller, the symptom occurs.

Black Line

104mm from Leading edge: The 1st transfer position shifts when the leading edge

208mm from Leading edge: The write position shifts when the leading edge enters

614mm from trailing edge: Rollers speed change when the paper exits the

Blank area at the trailing edge is narrow (magnification error)
When the LU pre-registration roller pushes paper too hard, it slips at the main body
registration roller and the image stretches, then the blank area becomes narrower.
(3) Solution
Following adjustment is effective for BK line and narrow blank area at tailing edge.
Set to minus direction on [LCT Banner Paper Regist. Speed Adj. ] of [Expert Adjustment].
[Utility]→[Administrator Setting]→[System Setting]→[Expert Adjustment]→[Printer Adjustment]
→[LCT Banner Regist. Speed Adj.]
Adjust every -5 steps from 0 (Default) up to -15 steps.
Be sure to check the print image for every setting change at [Print mode]
This adjustment has effect on BK line 104mm and 208mm from leading edge when it is worse
than Image of the normal paper size.
If BK line occurs on the normal paper size, at first conduct countermeasure of [Line or banding
on image due to speed change (Shock noise) ].
Table of contents
KONICA MINOLTA Confidential
614m
BK Line
enters to the 2nd transfer roller.
to the 2nd transfer roller.
pre-registration roller and paper bounces up.
- 207 -
Narrow
trailing
space