Xerox Phaser 4510 - Low Paper Sensor

Phaser 4500/4510 Service Manual 4-21
General Troubleshooting
Low Paper Sensor
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Low paper sensor
■ Low paper actuator
■ Bottom plate assembly
■ Low Paper 1 harness
assembly
■ LVPS
■ HVPS/engine logic board
■ “150-Sheet Feeder, 550-Sheet Feeder, Main
Fan” on page 10-27
■ “Print Engine Wiring Diagrams” on page 10-19
■ “Print Engine Plug/Jack Locator” on page 10-3
Troubleshooting Procedure
Steps Actions and Questions Yes No
1 Check the low paper actuator:
Install paper cassette.
Does the low paper actuator operate
smoothly when the bottom plate assembly
is pushed and released by the hand?
Does the flag go into the detection point of
the sensor when the bottom plate
assembly is released (Actuator is pushed
up), and out of the detection point when
pushed down?
Go to step 2. Replace the
low paper
actuator
(page 8-5).
2 Check the low paper sensor:
1.Enter Service Diagnostics, and from the
Sensor Tests menu select the
appropriate low paper sensor.
2.Manually actuate the low paper sensor.
Does the sensor correctly report the
position of the actuator?
Replace the
HVPS/engine
logic board
(page 8-73).
Go to step 3.
3 Check the Low Paper 1 harness assembly:
1.Remove the Low Paper 1 harness
assembly.
2.Test for continuity across J260 <=> J26.
Is it continuous?
Go to step 4. Replace Low
Paper 1
harness
assembly.
4 Replace the low paper sensor (page 8-34).
Does the problem still occur after
replacement?
Replace the
HVPS/engine
logic board
(page 8-73).
Problem
solved.