Xerox Phaser 840 Service Manual page 145

Table 4-4 Check Menu Value Key
Test ID#
Paper Path Timing
ID# 4
R# Definition
0 Tray 1 pick flag to
preheat entry flag
1 Preheat entry flag
to width A flag
2 Feed clutch to
width A4 flag
3 Width A4 flag to
preheat exit flag
4 Preheat exit flag
to transfix strip
flag
5 Transfix strip flag
to paper exit flag
6 Paper exit flag to
duplex entry flag
Duplex entry flag
to duplex preheat
7
entry flag
8 Duplex preheat
entry flag to width
A flag
Results Interpretation/Actions
Paper is not feeding smoothly
through the paper path or is
> 1000
skewed. If the paper came from a
lower tray, ensure the tray is
loaded properly to eliminate
skew. Check the paper path for
obstructions and verify the front
door deskew fingers are not
damaged.
Paper may be excessively
skewed or damaged (bent or torn
> 20
corner). Ensure proper tray
< -10
loading and verify media is in
good condition.
Media was not deskewed
successfully. Ensure proper tray
> 210
loading and verify front door
< 180
deskew fingers are not damaged.
This may also be due to a bad
feed clutch, slippery feed roller or
misaligned sensor.
Media was not deskewed
successfully. Ensure proper tray
> 180
loading and verify front door
< 160
deskew fingers are not damaged.
This may also be due to a bad
feed clutch, slippery feed roller or
misaligned sensor.
The media was delayed in
reaching the strip sense flag.
> 680
Light weight or coated media
may tend to stick to the transfix
roller. This may also occur if the
transfix roller is dirty or not
properly oiled. The rapid release
guide may also be bound or
damaged.
> 160 Something may be obstructing
the exit path.
The exit rollers may be slipping
on the media, or the exit flag may
> 2300
be worn to the point that it
catches on the media.
This may be due to skewed
paper, paper path obstructions or
> 1600
media that is too heavy for the
duplex path.
Paper may be excessively
skewed or damaged (bent or torn
> 35
corner). Ensure proper tray
< -35
loading and verify media is in
good condition.
Diagnostics and Adjustments 4 - 129