Xerox 4400DT - Phaser B/W Laser Printer Service Manual page 80

Paper Size Error Troubleshooting Procedure (cont'd.)
Step Actions and Questions
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?
Paper Size Actuators
Actuator Cam
Extended
Top
Middle
Bottom
Tray [#] Failure. Open and Close Tray [#].
(C3-[#]E Tray [#] Not In)
A Tray Assembly (Tray 1, 2, or 3) is not in place.
Tray Failure Troubleshooting Procedure
Step Actions and Questions
1 1. Enter Service Diagnostics,
2. Print a test print from every tray.
Does the Error Code specify Tray 2 or Tray 3?
2 Remove and reinstall Tray 1.
Does the C3 error code still appear?
3 Measure the voltage from the lower contact of the
Feeder Socket (P/J672) to frame ground.
Is the voltage +24 VDC?
4 Measure the voltage from P/J33 pin 6 on the Engine
Logic Board to frame ground.
Is the voltage +24 VDC?
5 1. Switch off the printer power.
2. Remove the Size Sensor Housing (RRP 3.11 on
page 6-40).
3. Measure continuity between the disconnected P/J33
pin 6 and P/J331 pin 12 on the Tray 1 Size PWB.
Is there continuity between the two pins?
Phaser 4400 Laser Printer Service Manual
B5 A5 13"
SEF SEF SEF
X X
X
Yes
Replace the
Engine Logic
Board (RRP
9.3 on
page 6-89).
14" 8.5" A4
SEF SEF SEF
X X
X X
Yes
Go to step
11.
Go to step 3.
Go to step 8.
Go to step 5.
Go to step 6.
No
Replace the
Tray Size
PWB
(RRP 3.13 on
page 6-42/
RRP 11.19 on
page 6-139).
No
Go to step 2.
Problem
solved.
Go to step 4.
Go to DC
Power
(LVPS) on
page 3-4.
Repair or
replace
Feeder
Harness
Assembly
(PL 9.1 on
page 7-22).
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