Tektronix Phaser 780 Color, Service Quick Reference Manual

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34 Phaser 780 Color Printer
Install
Tray 3 The engine control board did not detect
a Paper Tray installed in Tray 3 slot.
1.
Reseat the tray into the third
feeder slot
2.
Inspect the tray’s switch
actuators for damage
3.
Inspect the lower
feeder-to-printer connections
Replace the paper size
sensor assembly
4.
Replace the engine control
board
Install
Tray 4 The engine control board did not detect
a Paper Tray installed in Tray 4 slot.
1.
Reseat the tray into the fourth
feeder slot
2.
Inspect the tray’s switch
actuators for damage
3.
Inspect the lower
feeder-to-printer connections
Replace the paper size
sensor assembly
4.
Replace the engine control
board
Install
Imaging Unit The imaging unit is either not installed or
not installed correctly. The engine
control board did receive a signal from
the customer replaceable unit memory.
1.
Reseat the imaging unit
2.
Inspect the CRUM connector
for damage or contamination.
Clean or replace if necessary
3.
Replace the imaging unit
4.
Replace the engine control
board
Install Fuser
Roll
Cartridge The engine control board detected that
the fuser oil roll assembly circuit is open.
1.
Reseat the fuser oil roll
2.
Inspect the fuser roll contacts
and connectors. Ensure they
are clean and seated
correctly
3.
Replace the fuser roll
4.
Replace the engine control
board
Error code
and
message Description Corrective action