6-14
Phaser 600 Color Printer
6
Troubleshooting
Not printing
The printer processes a sheet of paper, but no image is printed on it.
1.
No drive voltages to the printhead. Check for a loose connector
leading to the printhead. Check the
±
HV outputs from the power
supply.
2.
Replace the engine control board.
3.
Replace the printhead.
4.
Replace the carriage board.
Printing too light or too dark
1.
Perform the Chapter 9 procedure, “Adjustments” on page 9-4.
Image is offset or cut off
1.
Check the application for the correct image sizing and orientation.
2.
Ensure that media loaded matches what is expected by the application
Forward and reverse swaths of prints made in bidirectional mode do not align
1.
Perform the bi-directional alignment test described in the Chapter 9
topic “Bi-directional print convergence” on page 9-21.
2.
Ensure that the paper tension blade, paper clamp and drum are clean.
3.
Run the service mode's convergence adjustment to check and correct
an alignment problem.
4.
Ensure that the printhead-to-media spacing is correctly set. See
Chapter 9, “Checking and adjusting the printhead” on page 9-9.
Entire image appears fuzzy; dots feature many satellites
1.
The printhead is too cold or too hot for printing. Either the thermistor
in the printhead is faulty and the printhead must be replaced, or the
engine control board is bad.
2.
The printhead high voltage may be adjusted too high; refer to the
Chapter 9 topic “Adjustments” on page 9-4.
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