Lph Latch Timing Fail C/ Lph Ffc Connect Fail C - Xerox Phaser 7500 Service Manual

LPH Latch Timing Fail C/ LPH FFC Connect Fail C

Phaser 7500 Printer Service Manual
LPH latch timing correction error.
The FFC connector is detected to have poor contact during LPH latch timing
control.
Note
Because this error is detected for each color at every cycle-up, perform at least
four jobs after turning the power Off and On.
Applicable Chain-Link Codes
• 061-392: LPH FFC Connect Posi Fail C
• 061-396: LPH FFC Connect Nega Fail C
Initial Actions
• Power cycle the printer.
• If the problem persists, follow the procedure below.
Troubleshooting Reference
Applicable Parts
LPH Unit (C), PL2.1.2
■
LPH Cable Assy, PL2.2.1
■
LPH Rear PWB (C), PL2.2.5
■
MCU PWB, PL18.3.6
■
1. Turn the power Off and On.
2. Check the following:
• The Flat Cable between the MCU PWB J555 and the LPH Rear PWB (C)
J559 for open circuit, short circuit, and poor contact.
• The Flat Cable between the LPH H PWB (C) J567 and the LPH (C) J575 for
open circuit, short circuit, and poor contact (connection within the LPH
Unit).
• The connector (P/J579) between the LPH Rear PWB (C) and the LPH H
PWB (C) for damage and debris.
• The LPH Unit (C) for improper installation.
3. If no problems are found, replace the following parts in sequence:
• LPH Unit (C) (REP 2.1,
• LPH Cable Assembly
• LPH Rear PWB (C) (REP 2.4,
• MCU PWB (REP 18.12,
Error Messages and Codes
Wiring and Plug/Jack Map References
page 8-18)
page 8-22)
page 8-202)
3-191