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54
Phaser 840 Color Printer
Incomplete image transfer to paper
All of the image does not transfer to the
paper. Part of the image remains on the
drum to be picked up by a chase page
or the next print, usually caused by
insufficient or non-uniform drum
oiling.
1.
Inspect the drum maintenance
drawer. Is the wiper blade
damaged? If necessary, replace the
drum maintenance drawer.
2.
Inspect the drum maintenance
system. Does the drum
maintenance roller contain
sufficient oil? Replace the drum
maintenance roller, if necessary.
3.
Are the drum maintenance cam
roller and electric clutch operating
correctly? Test them using PC-
based diagnostics.
4.
Ensure the left and right drum maintenance actuators operate correctly
when lifted by the cams of the drum maintenance cam roller.
5.
The drum may be too warm, verify the drum temperature using PC-
based diagnostics. Ensure the drum temperature sensor is properly
positioned and has no contamination between it and the drum surface.
6.
Verify the paper preheater temperature using PC-based diagnostics.
7.
Try a different paper, if a specialty coated paper is being used.
0388-52
Summary of Contents for Phaser 840
Page 46: ...36 Phaser 840 Color Printer ...
Page 95: ...Service Guide 85 Clearing PostScript NVRAM menu item ...
Page 96: ...86 Phaser 840 Color Printer ...
Page 121: ...Service Guide 111 Figure 1 Cabinet FRUs 7 5 6 8 1 2 4 0388 21 3 ...
Page 125: ...Service Guide 115 Figure 3 Paper path FRUs 0388 16 2 1 5 11 10 9 12 6 4 3 7 13 8 ...
Page 127: ...Service Guide 117 Figure 4 Motors and fans FRUs 0388 14 7 4 3 5 6 2 1 ...
Page 129: ...Service Guide 119 Figure 5 Circuit boards FRUs 4 3 5 2 1 9 7 6 8 10 11 13 0388 13 12 ...
Page 131: ...Service Guide 121 Figure 6 Solenoids and clutches FRUs 4 5 3 2 1 0388 23 ...
Page 137: ...Service Guide 127 Figure 9 High capacity PaperTray 0388 65a 1 2 ...
Page 142: ...132 Phaser 840 Color Printer ...
Page 154: ...144 Phaser 840 Color Printer ...