Xerox PHASER 7500 Service Manual

3-166 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.
■ The Drum/ Deve Drive Motor (Y,
M, C) for improper installation
(affected by the noises caused by
improper installation).
■ The NVM value for corruption.
Are they normal, without any short
circuit, poor contact, or corruption?
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,
or initialize the
NVM.
3 Check the following:
■ The connection between the
Motor Drive PWB J518 and the
LPH Rear PWB (Y) J553 for open
circuit, short circuit, and poor
contact.
■ The connection between the LPH
H PWB (Y) J565 and the LPH (Y)
J573 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.
Are they normal, without any short
circuit, poor contact, and debris?
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)
■ 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
or, remove the
debris.
Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No

Xerox PHASER 7500 Specifications

General

Max Print Resolution	1200 x 1200 dpi
Monthly Duty Cycle	150, 000 pages
Standard Paper Capacity	550 sheets
Duplex Printing	Optional
Standard Memory	256 MB
Network Connectivity	10/100/1000Base-T Ethernet
Supported Operating Systems	Windows, Mac OS, Linux
Max Paper Capacity	2, 100 sheets
Connectivity	USB 2.0, Ethernet
PDL	PostScript 3, PCL 6, PDF
Print Speed	Up to 35 ppm