Xerox COLORQUBE 8570, Руководство по обслуживанию

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October 2012
6-18 ColorQube 8570/8870 Service Manual
Service Diagnostics Tests
Revised, 3rd Revision - Xerox Internal Use Only General Troubleshooting
Motors/Shafts
(cont.) Tray 1 Pick Shaft
This test exercises the Tray 1
pick mechanism to determine
if the shaft can be engaged/
disengaged and to measure
the friction between the Pick
Roller and the Separator
Pad. The Media Drive
Assembly is started and run
for a short time without the
Tray 1 pick shaft to loosen up
the gears/bearings. Next, the
Tray 1 Pick Solenoid is
engaged through one revolu-
tion of the Pick Shaft and
released right after the next
trip point so that two full revo-
lutions are obtained.
During the two revolutions,
the drive requirements are
recorded to test the interac-
tion between the Tray 1 Pick
Shaft, Pick Roller, Lift Plate,
and Separator Pad.
Open Tray 1, remove any
media, and fold out the media
extension before running this
test. open tray 1 with no media
press any key to continue
CW
Pause
operator abort
Open Tray 1,
remove any
media, and fold
out the media
extension before
running this test.
To terminate,
press any key
when Pause is
displayed.
Tray 2 Pick Shaft
This test determines if the
specified tray Pick Shaft is
operating normally. The test
is the same for each Pick
Shaft, although for Tray 2, the
Media Drive Assembly is
used instead of the optional
Tray Motor. Requesting a test
for a missing tray generates
an "option not detected" mes-
sage and the test does not
run.
This test checks the Pick
Clutch, Nudger Roller, and
Separator Pad performance,
although information is
obtained about bearing, gear
and shaft condition. remove Tray 2
press any key to continue
Exercise Tray 2 Pick Shaft
CCW
Pause
operator abort
To terminate,
press any key
when Pause is
displayed.
Table 2 Service Diagnostics Menu Definitions
Menu Item Description Control Panel Display Note
Motors/Shafts
(cont.) Tray 2 Pick Shaft (cont.)
At the start of the test, a
prompt requests removal of
any media, if present, in the
tray (if initially empty, cycle
the tray to leave the Lift Plate
in the down position).
Acknowledge the prompt by
pressing a Control Panel but-
ton. After acknowledgement,
the Pick Shaft is driven for a
short time to loosen up the
gears and bearings. Next, the
Tray Motor is run for a short
time with the Pick Shaft dis-
engaged. The Pick Clutch is
momentarily engaged and
the Tray Motor stopped.
The test continues by running
the Pick Shaft at a slow pick
speed. At the same time, the
corresponding Lift Plate is
raised. The raising operation
terminates when the Paper
Height Sensor goes High.
The Pick Shaft continues to
run for a short time to deter-
mine the amount of friction
between the Nudger Roller
and the Separator Pad. The
printer response to the Pick
Clutch activity demonstrates
the clutch characteristics.
The steady state drive
requirements should show
bearing status and the char-
acteristics of the roller mate-
rials, flat/dirty rollers, bent
shafts, etc. Nudger Roller
and Separator Pad friction
indicates condition of these
parts (glazed, dirty).
Table 2 Service Diagnostics Menu Definitions
Menu Item Description Control Panel Display Note