Low Paper Sensor - Xerox Phaser 4500 Service Manual

Low Paper Sensor

Troubleshooting Reference
Applicable Parts
Low Paper Sensor
Low Paper Actuator
Bottom Plate Assembly
Low Paper 1 Harness Assembly
LVPS
HVPS/Engine Logic Board
Troubleshooting Procedure
Steps Actions and Questions
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?
2 Check the Low Paper Sensor:
1. Enter Service Diagnostics, and from the
Sensor Tests
appropriate Low Paper Sensor.
2. Manually actuate the Low Paper Sensor.
Does the sensor correctly report the
position of the actuator?
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?
4 Replace the Low Paper Sensor
(page 8-42).
Does the problem still occur after
replacement?
4-22
Wiring and Plug/Jack Map References
"150-Sheet Feeder, 550-Sheet Feeder, Main Fan"
on page 10-22
"Print Engine General Wiring Diagram" on
page 10-17
"Print Engine Plug/Jack Locator" on page 10-3
menu select the
Yes
Go to step 2.
Replace the
HVPS/Engine
Logic Board
(page 8-89).
Go to step 4.
Replace the
HVPS/Engine
Logic Board
(page 8-89).
Phaser 4500 Service Manual
No
Replace the Low
Paper Actuator
(page 8-5).
Go to step 3.
Replace Low
Paper 1 Harness
Assembly.
Problem solved.