Other Problems; The Printer Continuously Displays "Initializing; No Toner Cartridge Installed When It Is - Tektronix Phaser 560 Service Manual

Other problems

8. Check the wiring harness leading from the paper feeder to the engine
control board (connector CN20).
9. Replace the paper feeder circuit board.
10.
Replace the engine control board.
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 parallel line test print. 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 print engine test print, then your most likely cause is the image
processor.

No toner cartridge installed when it is

1.
Ensure that the toner cartridge is correctly installed.
2. Replace the toner cartridge.
3. Replace the toner cartridge drive unit.
4.
Replace the engine control board.
Troubleshooting
Service Manual 6-13
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