3-148 Phaser 5500 Printer Service Manual
Duplex Unit Failure - H2-7 Duplex Comm Failure
Communications failure between the Engine Logic Board and the Duplex Unit.
Applicable Error Code
Duplex Unit Failure - H2-7 Duplex Comm Failure
33
Check Feed/Lift Motor resistance.
Is there some amount of resistance
across PF58-2/5(COM) and PF58-1/3/4/
6?
Go to Step 34. Replace the
Feed/Lift Motor
(
page 3-49).
34
Check for +24 V to the Feed/Lift Motor.
Are the voltages across PF06-3 <=>
PF04-3, and PF06-4 <=> PF04-3 on the
Tray 6 PWB +24 V?
Go to Step 35. Replace the Tray
6 PWB
(
page 3-67).
35
Replace the Feed/Lift Motor.
Print a Test Print.
Does the error still occur?
Go to Step 36. Problem solved.
36
Replace the Tray 6 PWB.
Does the error still occur?
Replace the
Engine Logic
Board
(
page 8-89).
Problem solved.
Duplex Comm Failure Troubleshooting Reference
Applicable Parts References
■ Duplex Unit 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
■ Duplex Unit Plug/Jack Locator (page 5-12)
■ Duplex Unit Wiring (page 5-13)
■ PL23.1 Duplex Unit (page 4-34)
Duplex Comm Failure Troubleshooting Procedure
Step Actions and Questions Yes No
1
Check Duplex Unit installation.
Reinstall the Duplex Unit.
Does the error still occur?
Go to Step 2. Problem solved.
2
Check the Duplex PWB connection.
Are P/J540 and P/J417 connected?
Go to Step 3. Connect P/J540
and P/J417.
Tray 6 Failure Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No
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