56
Phaser 840 Color Printer
Banding parallel to long edge of print
Fills are inconsistent with wide bands
of variegated color.
1.
The head-to-drum gap is too great.
Perform the adjustment detailed in
the topic “Printhead-to-drum
spacing adjustment” on page 66.
2.
If the problem persists, replace the
printhead.
Wrinkling
1.
Try different media from a sealed
package. In high-humidity
environments, paper left exposed
(unpacked) absorbs moisture and
begins to warp.
2.
Ensure the deskew fingers inside
the front cover are not damaged or
missing.
3.
Inspect the maintenance drawer
wiper blade. Replace the
maintenance drawer, if necessary.
4.
The transfix spring pressure is
incorrect. Perform the procedure
“Transfix roller pressure spring
adjustment” on page 72.
5.
Replace the drum/transfix
assembly.
0388-55
0388-56
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 ...