Xerox Phaser 7500 Service Manual page 182

Error Messages and Codes
3-44
Troubleshooting Procedure (Continued)
Step Actions and Questions
8 Check the connection between the
Tray Module PWB J551 and the TM
Takeaway Motor J224 for open
circuit, short circuit, and poor contact.
Is it conducting properly?
9 Perform the Tray Feed Sensors test in
Diagnostics.
Move the Actuator manually to block/
clear the light path to the Tray 5 Feed
Out Sensor.
Does the display change between
High/ Low?
10 Check the following:
Paper transportation failure due to
■
debris/ burrs on the paper path.
The Feed Roll, Retard Roll, and
■
Nudger Roll for contamination and
damage.
The TM Takeaway Roll and Pinch
■
Roll for contamination and
damage.
The Feed Roll, Retard Roll, and
■
Nudger Roll Drive Gears for wear
and damage.
The Takeaway Roll Drive Gear for
■
wear and damage.
Is paper used out of specification?
■
Are they normal, without any
transportation failure, rotation failure,
and etc.?
Yes No
Replace the Repair the
following parts sections that
in sequence: have short
circuits and
Tray Module
■
PWB (REP poor contacts.
10.9,
page 8-97)
TM Relay
■
PWB (REP
18.14,
page 8-205)
Motor Drive
■
PWB (REP
18.13,
page 8-204)
MCU PWB
■
(REP 18.12,
page 8-202)
Go to step 10. Refer to
"General
Sensor
Failure" on
page 3-28.
Replace the Repair the
following parts sections that
in sequence: have
transportation
Tray Module
■
PWB (REP failure,
10.9,
rotation
page 8-97)
failure, and
TM Relay
■
etc.
PWB (REP
18.14,
page 8-205)
Motor Drive
■
PWB (REP
18.13,
page 8-204)
MCU PWB
■
(REP 18.12,
page 8-202)
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