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Phaser 840 Color Printer
Drum position encoder gap
This procedure ensures that the drum-position sensor assembly’s encoder wheel
rotates freely inside the gap of the drum-position sensor without the encoder
wheel’s disk touching the sensor. If the disk touches the sensor, it can abrade the
disk and result in erroneous drum position readings.
1.
Ensure that the retaining spring is not in the drum-position sensor
assembly’s encoder wheel groove. This ensures that the encoder wheel
is not tensioned and slides easily onto the drum shaft.
2.
If not already mounted in place, secure the drum-position sensor
assembly onto the drum shaft and secure it to the printer frame.
3.
Through the access hole in the drum-position sensor assembly, position
the encoder gap tool on the drum shaft.
4.
Reposition the drum-position sensor assembly’s encoder wheel on the
drum shaft until it butts firmly against the encoder gap tool.
5.
Holding the gap tool in place, with a small, flatblade screwdriver, slide
the encoder wheel’s retaining spring into the encoder wheel’s groove.
6.
Remove the gap tool. Reassemble the printer and make a test print.
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 ...