Laser Motor Failure - U3-5 Polygon Motor Rotation - Fuji Xerox Phaser 5500 Service Manual

Laser Assembly Troubleshooting Procedure (Continued)
Step Actions and Questions
6 Check continuity between the Laser
Assembly and the Engine Logic Board.
Is there continuity on each wire
between P/J130 <=> P/J406?
7 Check for +5 V to the Laser Assembly.
Is there +5 V across P/J140-8 (+) <=>
ground?
8 Check for +24 V to the Laser.
Is there +24 V across P/J130-5 (+) <=>
ground?

Laser Motor Failure - U3-5 Polygon Motor Rotation

The Scanner Motor, located in the Laser Assembly, failed.
Applicable Error Code
Laser Failure - U3-5 Polygon Motor Rotation
Scanner Motor Troubleshooting Reference
Applicable Parts
Drum Cartridge
Laser Assembly
Engine Logic Board
Scanner Motor Troubleshooting Procedure
Step Actions and Questions
1 Check the Drum Cartridge installation.
Is the Drum Cartridge installed
properly?
2 Test the Scanner Motor.
Run the Service Diagnostics Laser Scan
Motor test.
Does the motor run?
3 Check the Laser connection.
Are P/J140 and P/J406 connected?
3-26
References
Print Engine P/J Laser and Exit PWB (page 10-7)
Print Engine laser Assembly Wiring (page 10-29)
PL5.1 Laser, CRU and Toner Dispense (page 9-32)
PL8.1 Print Engine Electrical (page 9-40)
Phaser 5500 Printer Service Manual
Yes
Go to Step 7.
Go to Step 8.
Replace the Laser
Assembly
(page 8-74).
Yes
Go to Step 2.
Replace Laser
Assembly or
Engine Logic
Board.
Go to Step 4.
No
Repair the wiring.
Replace the
Engine Logic
Board
(page 8-89).
Replace the
Engine Logic
Board
(page 8-89).
No
Correct the
installation.
Go to Step 4.
Connect the
Laser Assembly.