Error Messages, Codes, and Procedures 3-189
Tray 4-5 Logic Board Failure - NVM
A read/write error has occurred in the NVRAM located on the Tray 4-5 PWB.
Applicable Error Codes
Tray 4-5 Logic Board Failure - H7-3 NVM out-of-order
Tray 4-5 Logic Board Failure - H7-4 NVM R/W Error
4
Check continuity between the Tray 6 PWB
and Engine Logic Board.
Check for continuity at the following:
P/J800A <=> P/J415
P/J800B <=> P/J415
P/J800 <=> P/J414
Are these conductive?
Go to Step 5. Repair the wiring.
5
Disconnect all the connectors connected to
the Tray 6 PWB and reconnect them.
Cycle printer power.
Does the error still occur?
Replace the Tray 6
PWB (
page 3-67).
Replace the
Engine Logic
Board
(
page 8-89).
Tray 4-5 NVRAM Error Troubleshooting Reference
Applicable Parts References
■ Tray 4-5 PWB
■ Engine Logic Board
■ Print Engine P/J Engine Logic Board (page 10-13)
■ PL8.1 Print Engine Electrical (page 9-40)
■ Phaser 5500 Printer Options Service Manual
■ 1000-Sheet Electrical P/J Locator (page 5-6)
■ 1000-Sheet Drive Wiring (page 5-8)
■ PL20.6 Tray 4-5 Drive and Electrical (page 4-16)
Tray 4-5 NVRAM Error Troubleshooting Procedure
Step Actions and Questions Yes No
1
Cycle the printer power.
Does the error reoccur?
Go to Step 3. Problem solved.
2
Check the Tray 4-5 PWB connection.
Are P/J413 and P/J541 connected?
Go to Step 3. Connect P/J413
and P/541.
Tray 6 NVRAM Error Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No
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