Xerox Phaser 4500, Service Manual

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