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100
Phaser 840 Color Printer
8.
Remove the three screws securing the drum position sensor assembly
housing to the print engine. Insert the gap tool to hold the encoder
wheel in position. Slide the assembly off the drum shaft. If necessary,
use the small flat-blade screwdriver to push the encoder disk hub along
the shaft as you remove the assembly.
Reverse these steps to reinstall the drum position sensor assembly. The drum
must be in the same position relative to the drum position encoder wheel when
the drum position sensor assembly was removed. This ensures that the stripper
fingers contact the drum in the same location as before; otherwise, print artifacts
will result.
■
Install the encoder wheel on the drum shaft,
precisely
aligning the home
flag to the alignment mark drawn on the shaft.
■
Use the encoder wheel gap tool to space the encoder wheel to the drum
position sensor.
Removing the drum position sensor assembly
840-4-18
Screws
Slide the
retaining spring
out of the
groove
Groove
Drum position
sensor
assembly
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 ...