Xerox Phaser 4510 - Optional 550-Sheet Feeder Low Paper Sensor

Phaser 4500/4510 Service Manual 4-43
General Troubleshooting
Optional 550-Sheet Feeder Low Paper Sensor
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Low paper sensor
■ Low paper actuator
■ Low paper sensor harness
■ Feeder harness 2
■ Optional 150-sheet paper
feeder
■ 550-sheet paper cassette
■ 550-sheet feeder PWBA
■ Bottom plate assembly
■ HVPS/engine logic board
■ “550-Sheet Feeder Signal Diagram” on
page 10-33
■ “550-Sheet Feeder General Wiring Diagram” on
page 10-32
■ “550-Sheet Feeder Plug/Jack Locator” on
page 10-12
Troubleshooting Procedure
Steps Actions and Questions Yes No
1 Check the low paper actuator:
1.Remove the Optional 550-Sheet Feeder
(page 8-86).
2.Install a 550-sheet paper cassette.
3.Move the bottom plate assembly up and
down.
Does the low paper actuator operate
smoothly?
Does the flag move between the sensor
arms when the bottom plate assembly is
up (the low paper actuator is pushed up),
and out of the sensor arms when the
bottom plate assembly is pressed down?
Go to step 2. Replace the
low paper
actuator.
2 Check the low paper sensor (1):
1.Install Optional 550-Sheet Feeder
(page 8-86).
2.Remove 550-sheet paper cassette.
3.Enter Service Diagnostics, and from the
Sensor Tests menu select the Tray 3/
4 Low Paper test.
4.Manually operate the low paper actuator.
Does the sensor correctly indicate the
position of the actuator?
Replace the
HVPS/engine
logic board
(page 8-73).
Go to step 3.