Repair Analysis Procedures
Phaser® 3500 Laser Printer Service Manual
2-13
4.
1. Inspect the Duplex Assembly. Is any 
paper wrapped around the Duplex 
rollers?
Remove obstruction 
and clean rollers.
Go to Step 5.
5.
1. Use service diagnostics to check the 
exit sensor.
2. Does the sensor operate correctly?
Go to Step 6. Replace the exit 
sensor and/or 
actuator.
6.
1. Inspect the exit and duplex roller 
assemblies.
2. Are the rollers damaged or binding?
Replace the exit or 
duplex roller as 
necessary.
Go to Step 7.
7.
1. Inspect the duplex assembly for 
damage.
Replace the duplex 
assembly.
Go to Step 8.
8.
1. Does the Feed Roller Assembly 
operate properly without binding?
Replace Main Board. Replace the Feed 
Roller Assembly.
Step Actions and Questions Yes No