Xerox PHASER 7500 Service Manual

3-164 Phaser 7500 Printer Service Manual
Error Messages and Codes
LPH Read Fail K
Communication error between the MCU and LPH (data read error from LPH).
Note
If this error occurs, it is possible that the process have not been performed
correctly because of other LPH Fail. If other LPH Fail had occurred, solving that
other LPH Fail has a higher priority.
Applicable Chain-Link Code
• 061-365: LPH Read Fail K
Initial Actions
• Power cycle the printer.
• If the problem persists, follow the procedure below.
1. Turn the power Off and On.
2. Check the following:
• The Flat Cable between the MCU PWB J554 and the LPH Rear PWB (K)
J558 for open circuit, short circuit, and poor contact.
• The Flat Cable between the LPH H PWB (K) J566 and the LPH (K) J574 for
open circuit, short circuit, and poor contact (connection within the LPH
Unit).
• The connector (P/J578) between the LPH Rear PWB (K) and the LPH H
PWB (K) for damage and debris.
• The LPH Unit (K) for improper installation.
• The Drum/Deve Drive Motor (Y, M, C) for improper installation (affected
by the noises caused by improper installation).
3. If no problems are found, replace the following parts in sequence:
• LPH Unit (K) (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)
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ LPH Unit (K), PL2.1.2
■ LPH Cable Assy, PL2.2.1
■ LPH Rear PWB (K), PL2.2.5
■ MCU PWB, PL18.3.6

Xerox PHASER 7500 Specifications

General

Brand	Xerox
Model	PHASER 7500
Category	Printer
Language	English