Xerox 4400DT - Phaser B/W Laser Printer, Service Manual, Page: 68 / 503

Phaser 4400 Laser Printer Service Manual 2-31
Close Front Cover/Close Rear Cover.
(Close Front Cover/Close Rear Cover)
3 Is the paper size in the problem tray within
printer specifications?
Go to step 4. Replace with
paper that
meets
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?
Go to step 5. Properly set
the guides.
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.
Go to step 6. Replace the
paper tray (PL
2.1 on
page 7-6 /PL
11.1 on
page 7-26 ).
6 1. Reinstall the paper tray.
2. Enter Service Diagnostics and select Sensor Tests.
3. Scroll to Paper Tray Size Read and press OK.
4. Select “Tray 1 Size” and press OK .
5. Press “Back” and select another tray size until all
installed trays are tested.
Does the paper size displayed on the Front
Panel display match the size of the paper
actually loaded in the tray?
Replace the
Engine Logic
Board (RRP
9.3 on
page 6-89 ).
Replace the
Tray Size
PWB
(RRP 3.13 on
page 6-42 /
RRP 11.19 on
page 6-139 ).
Close Front/Rear Cover Troubleshooting Procedure
Step Actions and Questions Yes No
1 1. Open and close the Front Cover.
2. Inspect the movement of the Interlock Switch.
Does the actuator tab on the Front Cover press
down on the Interlock Switch lever?
Go to step 2. Replace the
Front Cover
Assembly
(PL 1.1 on
page 7-2 ).
2 1. Open and close the Rear Cover.
2. Inspect the movement of the Interlock Switch.
Does the actuator tab on the Rear Cover press
down on the Interlock Switch lever?
Go to step 3. Replace the
Rear Cover
Assembly
(PL 1.2 on
page 7-4 ).
3 1. Enter Service Diagnostics and select Sensor Tests.
2. Scroll to Rear Cover Switch test and press OK .
3. Open and close the Rear Cover.
Does the message on the display alternate
between “Closed” and “Open” as you open and
close the Rear Cover?
Go to step 5. Go to step 4.
Paper Size Error Troubleshooting Procedure (cont'd.)
Step Actions and Questions Yes No