Tray 2 (Or Tray 3) Paper Is Low - Xerox 4400DT - Phaser B/W Laser Printer Service Manual

Tray 2 (or Tray 3) Paper is Low.

Paper stack in Tray 2 and/or Tray 3 is below 50 ±30 sheets.
Low Paper (Tray 2 or Tray 3) Troubleshooting Procedure
Step Actions and Questions
1 Fill the affected paper tray with fresh paper.
Is the Error Message still displayed?
2 1. Remove the paper tray from affected Feeder
Assembly.
2. Manually push up and release the low paper actuator.
Does the low paper actuator move smoothly up
and down?
3 1. Enter Service Diagnostics and select Sensor Tests.
2. Scroll to Tray 2 (or Tray 3) Low Paper Sensor and
press OK.
3. Press and release the Low Paper Actuator.
Does the message on the Front Panel display
alternate between Low and Not Low as you
press and release the actuator?
4 1. Switch the printer power OFF.
2. Remove the Left Interface Cover (RRP 1.1 on
page 6-6), Left Cover (RRP 1.2 on
Left Plate (RRP 1.11 on
3. Switch the printer power-on.
4. On the Engine Logic Board, check the voltage
between P/J33 pin 8 and frame ground.
Is the voltage +3.3 VDC?
5 On the Engine Logic Board, check the voltage between
P/J28 pin 10 and frame ground.
Is the voltage +3.3 VDC?
6 1. Enter Service Diagnostics and select Sensor Tests.
2. Scroll to Tray 2 (or Tray 3) Low Paper Sensor and
press OK.
3. As you actuate the Low Paper Sensor, check the
voltages at the following locations on the Engine
Logic Board:
For Tray 2, check between P/J33 pin 9 and frame
I
ground.
For Tray 3, check between P/J33 pin 10 and frame
I
ground.
Does the voltage change from +3.3 VDC to 0.0
VDC?
2-40
page 6-7), and the
page 6-16).
Phaser 4400 Laser Printer Service Manual
Yes No
Go to step 2. Problem
solved.
Go to step 3. Inspect the
Low Paper
Actuator.
Repair or
replace as
required.
Replace the Go to step 4.
Engine Logic
Board (RRP
9.3 on
page 6-89).
Go to step 6. Go to step 5.
Replace the Replace the
Engine Logic LVPS (RRP
Board (RRP 9.5 on
9.3 on page
page 6-89).
Replace the Replace the
Engine Logic Low Paper
Board (RRP Sensor
9.3 on (RRP 11.14,
page 6-89). page
for the
affected tray.
If the
problem
persists,
replace the
Feeder PWB
(RRP 11.9,
page
then the Size
PWB
(RRP 11.19,
page
6-91).
6-133)
6-128)
6-139).