Print Engine Check Menu Tests - Xerox Phaser 8560MFP Service Documentation

Table 13 Tray 2, 3, or 4 Pick Shaft Nominal Values
R# Characteristic Typical Value
5 Off fe settling time (sec) N/A
6 Time to lift plate up (sec) N/A
7 Plate lifted average fe N/A
Fans Menu
These tests determine if the specified fan is operating properly. The selected fan is turned on
for a short interval while the power is measured.
Drum Fan Test
The Drum Fan is turned On and allowed to rotate to its constant velocity. Next, the Drum Fan is
turned Off and the values are calculated. Typical values are influenced by part variability and
power supply tolerances.
Table 14 Drum Fan Nominal Values
R# Characteristic Typical Value
0 Max Power (Watts) N/A
1 Constant Velocity Power N/A
(Watts)
2 Constant Velocity Power Rip- N/A
ple (Watts)
3 Constant Velocity Time (sec) N/A
Initial Issue
Phaser 8510/8560MFP Multifunction Product
Result
Reports the time it takes the MP motor
servo system to settle down after the
sudden release of the Tray 2 pick shaft
load. A larger value could indicate a
dragging or slow to release clutch.
Reports the time between the activation
of the Tray Motor and the detection of the
raised lift plate. Out of range values may
indicate a problem with the lifting mecha-
nism (which could effect the following
friction measurement), or media in the
tray.
Reports the peak effort required to drive
the pick shaft when the nudger roller is in
contact with the separator pad. A smaller
value could indicate a slipping clutch,
missing Nudger Roller pressure spring,
or a glazed pad.
Result
Reports the initial fan power draw.
Reports the power drawn by the fan
while running a constant velocity.
Reports the power ripple while the fan is
running at constant velocity.
Reports the time from On until the fan
reaches constant velocity. Values above
typical could indicate a weak fan, extra
drag (bearings, blades), or obstructed
airflow.
Electronics Fan Test
The Electronics Module Fan is turned On and allowed to rotate to its constant velocity. Next,
the Drum Fan is turned Off and the values are calculated. Typical values are influenced by part
variability and power supply tolerances.
Table 15 Electronics Fan Nominal Values
R# Characteristic
0 Max Power (Watts)
1 Constant Velocity Power
(Watts)
2 Constant Velocity Power Rip-
ple (Watts)
3 Constant Velocity Time (sec) N/A
Heaters Menu
These tests determine if the selected heater is operating as expected. When test data on a
specific heater is requested, all of the heaters are tested as a group and the data for the
selected heater is displayed. Subsequent requests for heater test data is derived from this cap-
tured information (without further testing). Heater test data remains in memory until a non-
heater test is selected, a reset, or restart occurs.
The test tilts the Printhead back to isolate the Drum from the jetstack heaters. The Drum is
rotated at idle velocity to keep the Drum temperature uniform. The test then sequentially
applies power to each heater (while monitoring all of the temperatures), to produce a tempera-
ture response. The test determines the relationship between heating power applied, the result-
ing temperature response profile, and the current drawn by each heater.
Reservoir Heater Test
The Printhead reservoir heater test characteristics and descriptions are listed in the following
table.
Table 16 Reservoir Heater Nominal Values
R# Characteristic
0 AC Line Voltage (volts)
1 Initial Temperature (deg C)
2 Average AC Current Delta
(amps)
3 Average AC Voltage Delta
(volts)
10/2006
6-19
Typical Value Result
N/A Reports the initial fan power draw.
N/A Reports the power drawn by the fan
while running a constant velocity.
N/A Reports the power ripple while the fan is
running at constant velocity.
Reports the time from On until the fan
reaches constant velocity. Values above
typical could indicate a weak fan, extra
drag (bearings, blades), or obstructed
airflow.
Typical Value Result
N/A Reports the baseline AC voltage prior to
the start of the test.
N/A Reports the thermistor temperature prior
to the application of heater power.
N/A Reports the average difference from
baseline AC current during the specified
heating interval.
N/A Reports the average difference from
baseline AC volts during the specified
heating interval.

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