Other Problems; The Printer Continuously Displays "Initializing; Transfer Roller Waste Tray Indicates Not Full When It Is - Tektronix Phaser 550 Service Manual

Other problems

These problems may be indicated as errors on the front panel.

The printer continuously displays "Initializing"

The most likely cause is that the image processor has not loaded its EEPROM
contents (instructions) into RAM successfully. This is usually indicated by the
health indicator (heart beat) being on or off but not flashing. All print engine
operation halts, and will only become ready when the image processor has
successfully booted.
1. Re-powering the printer, or perform a NVRAM reset.
2.
To verify if the image processor has failed:
a. Power down the printer, and remove the back of the printer to
gain access to the ribbon cable connecting the image processor
board to the print engine control board; disconnect the ribbon
cable at the control board.
b.
Power-up the printer. Wait at least 5 minutes while the print
engine initializes. If there was a problem with the image
processor, it will now not affect the print engine control board.
c. Check if the print engine is OK by pressing the print engine test
print button, you should get the muddy/reddish print engine
copy. If not, then your problem is most likely associated with the
print engine control board, and you will need to replace it. If,
however, you get the muddy/reddish print engine copy, then your
most likely cause is the image processor.

Transfer roller waste tray indicates not full when it is

1. Ensure the paper feeder is correctly installed and properly locked in
place.
1. Is the transfer roller waste bin correctly installed?
2.
Does the waste bin correctly interrupt the transfer roller waste bin
sensor?
3. Inspect the wiring harness leading from the paper feeder board to
CN309 of the engine driver board.
4.
Replace the paper feeder board
5. Replace the engine driver board.
Troubleshooting
Service Manual 6-15
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