Xerox PHASER 7500 - Page 290

3-152 Phaser 7500 Printer Service Manual
Error Messages and Codes
2 Check the following:
■ The Flat Cable between the MCU
PWB J557 and the LPH Rear PWB
(Y) J561 for open circuit, short
circuit, and poor contact.
■ The Flat Cable between the LPH H
PWB (Y) J569 and the LPH (Y)
J577 for open circuit, short circuit,
and poor contact (connection
within the LPH Unit).
■ The connector (P/J581) between
the LPH Rear PWB (Y) and the LPH
H PWB (Y) for damage and debris.
■ The LPH Unit (Y) for improper
installation.
■ Perform the LED EEPROM test in
Diagnostics.
Are they normal, without any short
circuits, poor contacts, and etc.?
Replace the
following parts
in sequence:
■ LPH Unit (Y)
(REP 2.1,
page 8-18)
■ LPH Cable
Assembly
■ LPH Rear
PWB (REP
2.4,
page 8-22)
■ MCU PWB
(REP 18.12,
page 8-202)
Repair the
sections that
have short
circuits and
poor contacts.
Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No