Informacion para Tecnicos de Sistemas y Microinformatica
The drum Maintenance home sensor actuated, but not at the expected time
Run diagnostics to verify clutch and sensor operation. Also verify that the drum
maintenance shaft is properly assembled.
System fault I/O Board.
The engine cannot detect the presence of the right I/O board.
The engine cannot detect the presence of the left I/O Board.
Engine firmware was unable to initialize.
The engine firmware was unable to start the service diagnostics task.
Failure reading print head NVRAM data.
Print head NVRAM data was all 0s.
Print head NVRAM was all 1s.
Print head NVRAM checksum failure. The data within the print head has
This indicates that an undefined message was found by the processor.
The print head is unable to move on its tilt axis, because it is colliding with
something. (head restraint pin,cap,poorly installed ink loader,screwdriver.)
The engine spent over 20 minutes in the print head adjust state. Remove the
adjustment tools and cycle power.
The print head format number is not understood by this version of engine
firmware. Verify the correct print head is installed. Replace the print head.
Ambient temperature has fallen to less than 10 degrees. Something may be
wrong with the print head.
The print head temperature dropped below the head-clean-threshold’ Check
Calibration failure Replace the print head.
Declared when the printer is booted and the head/cap contact flag is set in
Declared when the printer is booted and the drum is dirty.
Dangerous process motor motion detected.
Head calibrate task spawn failed. This may be due to a low memory
Undefined result in pc_ process_result().
Bad status message in pc_ process_status().
Re-entrant call to halt detected I/O right has been known to cause this fault
Dangerous process motor detected.
Bad command result during Drum warm-up processing of a postscript
command message in pc _process_message().
Bad command result during Big Drop Flush Processing.
Bogus thermal state. Corrupt NVRAM device.
Bad command result waiting for fault to clear processing of a postscript
Some Phaser 850 printers were built with print heads that had different set
points for different print modes Replace the print head.
Drum-home sensor failure.
Y-axis position failure.
Bad ITC command in home state.
Missed ITC message during rendezvous.
Indication that motor coil is open or shorted.
There is a problem with the lower tray assembly or its installation.
Replace I/O board right.
The drum maintenance home sensor did not actuate or change state as
Drum maintenance home sensor actuated, but not at the expected time.
Drum maintenance home sensor actuated when no motion should have
Most likely cause is a failed drum heater.