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Service Guide
55
Ink smears of first side of duplex print
Preheater temperature is too high.
1.
Verify the paper preheater
temperature using PC-based
diagnostics. Replace the paper
preheater, if necessary.
Repeating print defects on print
The distance between each artifact of a
repeating image defect reveals which
imaging component is causing the
defect.
1.
Repeating defect 13.6 cm (5.34 in.)
are caused by the transfix roller.
2.
White or dark lines parallel to the
long edge of the print, spaced 1.4
mm (0.054 in) in solid fills, using
Standard printing mode indicate
the X-axis step accuracy is
incorrect. Ensure the long spring
mounted underneath the
printhead is intact and not
contaminated with ink; remove the
maintenance drawer to access the
underside of the printhead.
Inspect the X-axis drive system;
replace it if necessary.
0388-53
0388-54
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 ...