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Phaser 840 and 850 Color Printers
6.
The x-axis motor activates to move printhead off its locking post. The x-
axis motor activates for three short bursts to ensure the printhead is in
its far-left travel (printhead home position). Then the x-axis motor is
reversed to move the printhead to the center the of the x-axis travel.
7.
The process motor is again activated to tilt the printhead forward into
the print position. The drum is rotated to sense it home position (The
Phaser 850 printer uses a slower rotation to find its home position).
8.
A short cap/wipe/purge assembly motion is performed and the
assembly is returned to its home position.
9.
After the print engine is in a known, valid state, The AC heaters are
enabled and the front panel display shows the warm-up progress. The
Ready LED flashes; when warm-up completes, the Ready LED lights
solid.
10.
The drum begins to rotate.
11.
If the temperature of the printhead ink reservoirs or jetstack are below
the purge threshold, then the printer performs a head clean cycle.
a.
When the ink in the printhead is molten and printhead
temperatures are correct, the cap/wipe/purge assembly is
positioned to the purge position.
b.
The printhead tilts forward against the cap/wipe/purge assembly
and a purge cycle begins.
c.
The front panel indicates the printer is in a clean cycle.
d.
A cleaning page is printed (Phaser 840 printer only).
12.
The temperature of the printhead, drum and paper preheater are
allowed to stabilize at their operating temperatures and ink is melted if
needed.
13.
A start page is printed (if enabled).
14.
The front panel displays a message that the printer is initializing and
then ready.
The print engine is initialized.
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 ...