Xerox Phaser 7500 Service Manual page 344

Error Messages and Codes
3-206
Troubleshooting Procedure (Continued)
Step Actions and Questions
3 Turn Off the power, then measure
the Tray 5 Feed/ Lift Up Motor wire
resistance.
Remove the Tray 5 Feed/ Lift Up
Motor, then measure the following
resistances.
Between J223 pin-1 and J223
■
pin-2
Between J223 pin-3 and J223
■
pin-4
Is the resistance approximately 4
Ohm for each?
4
Check the connection between the
Tray Module PWB J550 and the
Tray 5 Feed/ Lift Up Motor J223 for
open
circuit, short circuit, and poor
contact.
Is it conducting properly?
5 Perform the Tray 5 Sensors test in
Diagnostics.
Use a sheet of paper, etc. to block/
clear the light path to the Tray 5
Nudger Level Sensor.
Does the display change between
High/ Low?
6
Check the Tray Lift Up Gear for
damage or the Tray Lift Up
mechanism for mechanical load.
Is it normal, without damage or
loading?
Yes No
Go to step 4. Replace the Tray
5 Feed/ Lift Up
Motor (REP 10.3,
page 8-93).
Replace the Repair the
following parts sections that
in sequence: have short
circuits and poor
Tray Module
■
PWB (REP contacts.
10.9,
page 8-97)
TM Relay
■
PWB (REP
18.14,
page 8-205)
Motor Drive
■
PWB (REP
18.10,
page 8-197)
MCU PWB
■
(REP 18.12,
page 8-202)
Go to step 6. Go to "General
Sensor Failure"
on page 3-28
check the Tray 2
Nudger
Level Sensor.
Replace the Repair the
following parts sections that
in sequence: have damage or
loading.
Tray Module
■
PWB (REP
10.9,
page 8-97)
TM Relay
■
PWB (REP
18.14,
page 8-205)
Motor Drive
■
PWB (REP
18.10,
page 8-197)
MCU PWB
■
(REP 18.12,
page 8-202)
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