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Phaser 840 and 850 Color Printers
5. Check vacuum and decay time.
With a T-connector, connect the vacuum
gauge to the between the vacuum/pump module and the cap/wipe/
purge unit.
Note
Always use a vacuum gauge to test the performance of the
vacuum system. Simply listening for the “kiss” sound at the end
of a purge cycle as the printhead separates from the cap/wipe/
purge assembly gasket is not enough to verify the vacuum
system’s performance.
Connecting the vacuum gauge to the printer
0388-35
Vacuum guage
40
20
0
60
-76
Cap/wipe/purge
vacuum hose
T-connector
Vacuum
assembly
Summary of Contents for Phaser 840
Page 11: ...xii Phaser 840 and 850 Color Printers ...
Page 65: ...54 Phaser 840 and 850 Color Printers ...
Page 101: ...90 Phaser 840 and 850 Color Printers ...
Page 125: ...114 Phaser 840 and 850 Color Printers ...
Page 134: ...Service Guide 123 Clearing PostScript NVRAM menu item ...
Page 135: ...124 Phaser 840 and 850 Color Printers ...
Page 166: ...Service Guide 155 Figure 1 Cabinet FRUs 7 5 6 8 1 2 4 0388 21 3 9 9 ...
Page 170: ...Service Guide 159 Figure 3 Paper path FRUs 0388 80 2 1 5 11 10 9 12 6 4 3 7 13 8 11a 11b ...
Page 172: ...Service Guide 161 Figure 4 Motor and fan FRUs 0388 14 7 4 3 5 6 2 1 ...
Page 174: ...Service Guide 163 Figure 5 Circuit board FRUs 4 3 5 2 1 9 7 6 8 10 11 13 0388 81 12 7a ...
Page 176: ...Service Guide 165 Figure 6 Solenoid and clutch FRUs 4 5 3 2 1 0388 23 ...
Page 182: ...Service Guide 171 Figure 9 High capacity PaperTray 0388 65a 1 2 ...