Missing Primary Color; Mis-Transfer, Missing Portions Of Toner - Tektronix Phaser 740 Service Manual

Missing primary color

1.
Replace the toner cartridge of the
missing color.
2.
Determine if the cartridge selector
is pushing the toner cartridges into
contact with the photoconductive
drum.
3. Check the wiring harness leading
from the cartridge selector/eject
unit to CN308 of the engine control
board.
4.
Replace the toner cartridge drive
unit.
5. Replace the engine driver board.
6.
Phaser 750 printer only. Run the
printer calibration routine Calibrate
for Paper available from the front
panel Help/Printer Quality menu.

Mis-transfer, missing portions of toner

1.
Inspect the heat roller (top roller) of
the fuser for scratches or
contamination.
2.
Ensure the media is correct for the
printer.
3. Replace the fuser.
Service Guide
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9697-56
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