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Service Guide
79
Cleaning Page
Under certain conditions, the printer purges its ink-jet nozzles to clear any jets
plugged with ink. When the purge is completed, the printer outputs a cleaning
page to clear the purge pattern from the print drum. Ink jets are purged under the
following conditions:
■
During warm-up from a power-off condition.
■
When the printer exits the Energy Star mode.
■
When customers initiate the
Eliminate Light Stripes
automatic
cleaning procedure from the front panel.
Vacuum
Vacuum dust from the top cover, the metal heat duct over the printhead and
plastic dust cover under the stripper fingers.
Drum temperature sensor
With a dry swab, clean any buildup around the drum temperature sensor. You
can access the sensor through the opened stripper finger cover. Also make sure
the sensor rides evenly on the drum surface. You can remove the sensor, if
necessary, to clean under it.
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 ...