Xerox Phaser 4500 Service Manual page 119

Phaser 4500/4510 Service Manual
Troubleshooting Procedure (continued)
Steps Actions and Questions
At the exit of the fuser assembly,
7
manually move the exit actuator up
and down.
Does the exit Actuator move
smoothly?
Enter Service Diagnostics, and from
8
the Sensor Tests
Exit Sensor (Fuser)
Does the sensor correctly report its
state when the actuator is manually
operated?
Measure the voltage across P/J46-5
9
<=> P/J46-4 while manually operating
the exit Actuator.
Does the voltage measure 0VDC
when the exit Actuator is pushed, and
3.3 VDC when released?
10 1. Disconnect P/J46 from the LVPS.
Warning: Allow the fuser assembly to
cool before removing.
2. Remove the fuser assembly
(page 8-44).
3. Check the fuser harness for
continuity
Is P/J46 <=> P/J4647 continuous?
11 Check the power to the exit Sensor:
Measure the voltage across P/J46-3
<=> P/J46-4.
Is the voltage 3.3 VDC?
12 Check the LVPS for continuity between
P/J41-1 and P/J 46-3.
Is it continuous?
13 Warning: Allow the fuser assembly to
cool down before removing.
1. Remove the fuser assembly
(page 8-44).
2. Manually turn the fuser assembly's
heater roller gear.
Do the gear and the roller of the fuser
assembly rotate smoothly?
14 1. Remove the transfer roller assembly
(page 8-45).
2. Inspect the transfer roller assembly
for shape irregularities and shaft
and bearing wear.
Are there any abnormalities in
transfer roller assembly?
Yes
Go to step 8.
Replace the
menu select the HVPS/engine
test. logic board
(page 8-73).
Replace the
LVPS
(page 8-62).
Go to step 11.
Go to step 13.
Go to "LVPS
(Low Voltage
Power Supply)"
on page 4-4.
Replace the
HVPS/engine
logic board
(page 8-73).
Replace the
transfer roller
assembly
(page 8-45).
Error Messages and Codes
No
Replace the
fuser assembly
(page 8-44).
Go to step 9.
Go to step 10.
Replace the
fuser harness
assembly
(page 8-42).
Go to step 12.
Replace the
LVPS
(page 8-62)
Replace the
fuser assembly
(page 8-44)
Go to step 15.
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