3-190 Phaser 5500 Printer Service Manual
Tray 4-5 Logic Board Failure - H7-7 Comm Failure
Communications error between 1000-Sheet Feeder and the Engine Logic Board.
Applicable Error Code
Tray 4-5 Logic Board Failure - H7-7 Comm Failure
3
Check continuity between the Tray 4-5
PWB and the Engine Logic Board.
1. DisconnectP/J413 and P/J541.
2. Check for continuity at the following:
P/J413-A1 <=> P/J541-1
P/J413-A2<=> P/J541-2
P/J413-A3 <=> P/J541-3
P/J413-A4 <=> P/J541-4
P/J413-A5 <=> P/J541-5
P/J413-A6 <=> P/J541-6
P/J413-B1 <=> P/J541-7
P/J413-B2 <=> P/J541-8
P/J413-B3 <=> P/J541-9
P/J413-B4 <=> P/J541-10
P/J413-B5 <=> P/J541-11
P/J413-B6 <=> P/J541-12
Are these conductive?
Go to Step 4. Repair the wiring.
4
Check for +5 V to the Tray 4-5 PWB.
Is there +5 V across P/J413-A5 (+) <=>
ground?
Replace the Tray
4-5 PWB
(
page 3-29).
Replace the
Engine Logic
Board
(
page 8-89).
Tray 4-5 Comm Failure 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 (Continued)
Step Actions and Questions Yes No
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