3-44 Phaser 7500 Printer Service Manual
Error Messages and Codes
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?
Replace the
following parts
in sequence:
■ Tray Module
PWB (REP
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)
Repair the
sections that
have short
circuits and
poor contacts.
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?
Go to step 10. Refer to
“General
Sensor
Failure” on
page 3-28.
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.?
Replace the
following parts
in sequence:
■ Tray Module
PWB (REP
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)
Repair the
sections that
have
transportation
failure,
rotation
failure, and
etc.
Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No
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