28
Phaser 740 and 750 Color Printers
12
L-sync over time
.
1.
Inspect the wiring harnesses leading from the laser driver board
to CN4. CN7, CN8 and CN 29 of the engine control board.
2.
Replace the laser motor drive board.
3.
Replace the laser scanner.
4.
Replace the engine control board.
13
L-sync under time.
1.
Cycle printer power and try printing again.
2.
Replace the laser motor drive board.
3.
Replace the laser scanner.
4.
Replace the engine control board.t
Print engine service error codes
Error code
Meaning of error code and what to do about it
Summary of Contents for Phaser 740
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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 ...