Repair Analysis ProceduresPhaser® 3500 Laser Printer Service Manual2-14Jam At Duplex (Duplex Jam 2)Check Cartridge, Invalid Print Cartridge, Non-Xerox Cartridge,Replace Print CartridgeClose Fuser DoorStep Actions and Questions Yes No1. 1. Does the paper jam after reversal butbefore reaching the duplex sensor?Replace the transportroller shaft.Go to Step 2.2. 1. Use service diagnostics to test theduplex sensor.2. Does the sensor operate correctly?Go to Step 3. Replace the duplexsensor.3. 1. Inspect the exit and duplex rollers forany signs of damage or binding.Replace the problemroller.Go to Step 4.4. 1. Replace the Duplex Assembly.2. Does the problem still occur?Replace the MainBoard.Replace the PowerSupply Board.Step Action and Questions Yes No1. 1. Open the top cover and ensure that thePrint Cartridge is properly seated.2. Does the error clear after reseating thecartridge?Complete Go to Step 2.2. 1. Check the Print Cartridge for damage.2. Does the cartridge contain toner andappear to be operating properly?Go to Step 3. Replace PrintCartridge.3. 1. Reseat all harness connections to theToner Sensor (CRUM) Board.2. Does the error clear?Complete Go to Step 4.4. 1. Check continuity between the TonerSensor (CRUM) Board and CN6 on theMain Board.2. Does the harness show continuity?Replace the TonerSensor Board.Replace Harness.Step Action and Questions Yes No1. 1. Visually inspect the fuser door close tabfor damage.2. Is the tab broken?Replace the Fuser. Go to Step 2.
