Fuser Jams; Eject Jams - Tektronix Phaser 550 Service Manual

Fuser jams

1.
Is the paper in good condition and appropriate for a laser printer?
2. Is the printer printing within its environmental specifications? Refer
to the Chapter 1 topic, "Specifications" on page 1-14.
3.
Inspect the fuser's gear train leading to the paper feed motor. Does it
rotate properly? Do any of the gears show broken teeth?
4. Does the fuser exit sensor flag properly actuate its sensor?
5. Inspect the wiring harness leading from the cartridge sensor/eject unit
to CN308 of the engine driver board.
6.
Inspect the fuser's oil tank for oil. If it is empty or very low, replace
the fuser.
7. Turn the fuser knob. If the knob is hard to turn, then the fuser is at the
end of its life and should be replaced.
8.
Observe if the exit rollers rotate during the print process. If they do
not, reinstall the fuser to ensure it's gear train (which also drives the
exit roller) properly connects to the paper feed motor.
9. Replace the fuser.
10. Replace the engine driver board.

Eject jams

1.
Is the paper in good condition and appropriate for a laser printer?
2. Is the printer printing within its environmental specifications? Refer
to the Chapter 1 topic "Specifications" on page 1-14.
3. Clean all the eject rollers.
4.
Inspect the interior of the printer reverser of the toner cartridge
selector/paper eject unit. Ensure that the metal fingers inside the
reverser are not bent or interfere with paper movement.
5. Does the paper exit sensor flag properly actuate its sensor?
6.
Inspect the wiring harness leading from the cartridge sensor/eject unit
to CN308 of the engine driver board.
7. Replace the cartridge selector/eject unit.
8. Replace the engine driver board.
Troubleshooting
Service Manual 6-13
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