Service Guide
65
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.
9697-55
9697-56
Summary of Contents for Phaser 740
Page 6: ......
Page 48: ...36 Phaser 740 and 750 Color Printers ...
Page 102: ...90 Phaser 740 and 750 Color Printers ...
Page 104: ...92 Phaser 740 and 750 Color Printers ...
Page 124: ...112 Phaser 740 and 750 Color Printers ...
Page 129: ...Service Guide 117 Figure 3 Motor and fan FRUs 3102 37 1 10 9 5 8 7 2 6 4 3 ...
Page 131: ...Service Guide 119 Figure 4 Sensor switch and flag FRUs 3102 40 1 7 2 3 4 8 5 6 ...
Page 135: ...Service Guide 123 Figure 6 Imaging and paper feed component FRUs 3102 39 1 2 3 7 9 4 6 8 5 ...