Xerox Phaser 4500 Service Manual page 121

Troubleshooting Procedure (Continued)
Steps Actions and Questions
7 1. Remove the Paper Exit Cover (page 8-4)
2. Check the Exit Pinch Roller by manually
turning the Exit Roller.
Is the Exit Pinch Roller undamaged, and
does it rotate smoothly?
Are the Exit Pinch Springs attached?
8 1. Turn the power ON.
2. Check the Exit Roller for rotation.
Does the Exit Roller rotate smoothly
during warm up?
9 Hold the Fuser Assembly open and
operate the Exit Actuator by hand.
Does Exit Actuator move smoothly?
10 Enter Service Diagnostics, and from the
Sensor Tests
Sensor (Fuser)
Does the sensor correctly report its
state when the actuator is manually
operated?
11 Measure the voltage across P/J46-5 <=>
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?
12 Check the power to Exit Sensor
Does the voltage across P/J46-3 <=>
P/J46-4 measure 3.3 VDC?
13 Check the LVPS for continuity between
P/J41-1 and P/J 46-3.
Is it continuous?
14 1. Disconnect P/J11 on the HVPS/Engine
Logic Board.
2. Disconnect P/J41 on the LVPS.
3. Check the LVPS Harness Assembly for
continuity between J11-10 and J41-7.
Is it continuous?
3-42
menu select the Exit
test.
Yes
Go to step 8.
Go to step 9.
Go to step 10.
Replace the
HVPS/Engine
Logic Board
(page 8-89).
Go to step 14.
Replace the
HVPS/Engine
Logic Board
(page 8-89).
Go to "LVPS (Low
Voltage Power
Supply)" on
page 4-4.
Replace the LVPS
(page 8-78).
Phaser 4500 Service Manual
No
Replace the Exit
Pinch Roller.
Replace the
Lower Exit Chute
Assembly
(page 8-63).
Replace the Fuser
Assembly
(page 8-54).
Go to step 11.
Go to step 12.
Go to step 13.
Replace the LVPS
(page 8-78).
Replace the LVPS
Harness
Assembly
(page 8-44).