Xerox 4400DT - Phaser B/W Laser Printer Service Manual page 79

Tray [#] Empty Troubleshooting Procedure (cont'd.)
Step Actions and Questions
10 1. Remove Tray 2/3.
2. Manually actuate the No Paper Sensor.
Does the No Paper Actuator move
smoothly?
11 1. Enter Service Diagnostics and select
Sensor Tests.
2. Scroll to Tray 2 No Paper or Tray 3 No
Paper and press OK.
3. Manually actuate the Tray 2/3 No Paper
Sensor.
Does the message on the display
alternate between "With paper" and
"Without paper" as you press and
release the actuator?
Load Tray [#] with [paper size] [paper type].
There is a conflict between the size of the paper detected by the Size Switches, and
the length of paper detected by the length of time the Registration Sensor is actuated.
Paper Size Error Troubleshooting Procedure
Step Actions and Questions
1 Does the problem appear when using Tray 1, 2,
or 3?
2 1. Verify the size of paper currently in the MPT Tray.
2. Select Menus and press OK, then
3. Select Printer Setup Menu and press OK.
4. Select Tray Setup Menu and press OK.
5. Select MPT Setup Menu and press OK.
Does the paper size checked in the MPT Setup
Menu match the size actually in the MPT?
3 Is the paper size in the problem tray within
printer specifications?
4 Check the side guides and the Paper Stack End Guide
in the problem tray.
Are all guides properly set for the size of paper
installed?
5 Check the size cam on the left side of the paper tray
(see the Paper Size Actuators table below).
Are the cams in good condition (not broken) and
do they move freely as the paper tray end guide
is moved.
2-42
Yes
Go to step 11.
Replace the
Engine Logic
Board (RRP 9.3 on
page 6-89).
Yes
Go to step 2.
Replace the
Engine Logic
Board (RRP
9.3 on
page
Go to step 4.
Go to step 5.
Go to step 6.
Phaser 4400 Laser Printer Service Manual
No
Replace the
Tray 2/3 No
Paper Actuator
(RRP 11.7 on
page 6-126).
Replace the
following in
order for the
problem feeder
assembly:
Feeder PWB
I
(RRP 11.9 on
page 6-128)
Size PWB
I
(RRP 11.19 on
page 6-139)
No
Go to step 3.
Set MPT size
to the size of
paper actually
installed, then
6-89). press OK.
Replace with
paper that
meets
specifications.
Properly set
the guides.
Replace the
paper tray (PL
2.1 on
page 7-6/PL
11.1 on
page 7-26).