Error Codes And Messages - Tektronix PHASER 780 Service Quick Reference Manual

Error Codes and
Messages
The following table list error codes and messages reported by the print
engine control board.
Error code Description
and
message
Laser Unit There is a problem with the laser unit.
Error The engine control board did not receive
(Error 10) a signal from the laser start-of-scan
sensor within the specified time
Image The image density readings indicate a
Density Error problem. The engine control board
(Error 11) detected that the printer image density
was unusually low and attempts to raise
the density have failed.
Note If the top cover is removed,
light can leak into the printer
and cause a auto-density
calibration sensor error.
Corrective action
Test the top cover and right
1.
front cover switches for
proper operation. Power for
the laser unit is routed
through both switches
Replace the laser unit.
2.
Replace the engine control
3.
board
Power cycle the printer
1.
Inspect the toner cartridges.
2.
Inspect the four developer
3.
housings. Each magnetic
roller should be evenly
coated with toner. Replace a
suspect developer assembly.
Test the toner/developer
4.
dispense motor. Replace it if
it does not run
Inspect and reseat the
5.
auto-density calibration
sensor. Ensure the senor's
solenoid-activated cleaning
blade is in place and moves
freely.
Test the auto-density
6.
calibration sensor. If bad,
replace the auto-density
calibration sensor
Replace the imaging unit
7.
Replace the engine control
8.
board
Replace the high voltage
9.
board
Service Guide 19