Tektronix Phaser 780 Color, Service Quick Reference Manual

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36 Phaser 780 Color Printer
Printer
Maintenance
Required The second bias transfer roller has
reached end of life. The engine control
board detected that second bias transfer
roller has completed over 100,000
images.
1.
Use diagnostics to verify the
print count
2.
Replace the second bias
transfer roller
3.
Replace the engine control
board
Printer
Maintenance
Required
Soon -
Imaging Unit
Life Almost
Over The imaging unit has reached end of life.
The engine control board detected that
the drum inside the imaging unit has
exceeded 90,000 revolutions.
1.
Replace the imaging unit
2.
Replace the engine control
board
Fuser Life
Almost Over The fuser is nearing end of life. The
engine control board detected that the
fuser processed 237,500 images or the
toner dispense motor has accumulated
more than 67,036 x 100ms of running
time.
1.
Replace the fuser
2.
Replace the engine control
board
Replace the
imaging unit The imaging unit has reached end of life.
The engine control board detected that
the imaging unit has printed 110,000
images.
1.
Replace the imaging unit
2.
Check the CRUM connector
for damage or contamination.
Clean or replace if necessary
3.
Replace the engine control
board
Close Lower
Tray
Assembly
Cover The engine control board detected that
the lower feeder cover interlock switch is
deactuated.
1.
Close the feeder cover
2.
Inspect the interlock switch.
Replace if necessary
3.
Replace the feeder control
board
4.
Inspect the lower
feeder-to-printer connections
at the rear of the printer
5.
Replace the feeder
6.
Replace the engine control
board
Error code
and
message Description Corrective action