Repair Analysis Procedures
Phaser® 3500 Laser Printer Service Manual
2-14
Jam At Duplex (Duplex Jam 2)
Check Cartridge, Invalid Print Cartridge, Non-Xerox Cartridge,
Replace Print Cartridge
Close Fuser Door
Step
Actions and Questions
Yes
No
1.
1.
Does the paper jam after reversal but
before reaching the duplex sensor?
Replace the transport
roller shaft.
Go to Step 2.
2.
1.
Use service diagnostics to test the
duplex sensor.
2.
Does the sensor operate correctly?
Go to Step 3.
Replace the duplex
sensor.
3.
1.
Inspect the exit and duplex rollers for
any signs of damage or binding.
Replace the problem
roller.
Go to Step 4.
4.
1.
Replace the Duplex Assembly.
2.
Does the problem still occur?
Replace the Main
Board.
Replace the Power
Supply Board.
Step
Action and Questions
Yes
No
1.
1.
Open the top cover and ensure that the
Print Cartridge is properly seated.
2.
Does the error clear after reseating the
cartridge?
Complete
Go to Step 2.
2.
1.
Check the Print Cartridge for damage.
2.
Does the cartridge contain toner and
appear to be operating properly?
Go to Step 3.
Replace Print
Cartridge.
3.
1.
Reseat all harness connections to the
Toner Sensor (CRUM) Board.
2.
Does the error clear?
Complete
Go to Step 4.
4.
1.
Check continuity between the Toner
Sensor (CRUM) Board and
CN6
on the
Main Board.
2.
Does the harness show continuity?
Replace the Toner
Sensor Board.
Replace Harness.
Step
Action and Questions
Yes
No
1.
1.
Visually inspect the fuser door close tab
for damage.
2.
Is the tab broken?
Replace the Fuser.
Go to Step 2.