+24V Not Available To The Duplex Unit - Xerox Paser 7400 Service Manual

+24V Not Available to the Duplex Unit

Abnormal current indicates that +24 V is not being supplied to the Duplex Unit.
Applicable Status Code:
Code 225:
Duplex Unit is not receiving +24 V.
Initial Actions:
Reseat the Duplex Unit.
Cycle the printer's power.
If the problem persists follow the procedure below.
Troubleshooting Reference Table
Applicable Parts
Motor Driver Board
LVPS
Duplex Unit
Troubleshooting Procedure Table
Step Actions and Questions
1 Check the Duplex Unit connector for
damage.
Is the connector damaged?
2 Check for +24 V at DUPLEX on the Motor
Driver Board.
1. Close the Interlock Switches.
2. Disconnect DUPLEX.
Is there +24 V at DUPLEX-6 and -13 <=>
ground?
3 Check all pins on the DUPLEX Harness for
continuity.
Disconnect the DUPLEX Harness.
Is the DUPLEX Harness conductive?
4 Check for +24 V from the LVPS.
Disconnect POW24 on the Motor Driver
Board.
Is there +24 V at POW24-1 <=> ground?
General Troubleshooting
Wiring and Plug/Jack References
Print Engine Map 5 (see Book 1)
Print Engine Map 6 (see Book 1)
Print Engine Motor Driver Board (1/6) (see Book 1)
Print Engine Motor Driver Board (5/6) (see Book 1)
Print Engine LVPS (see Book 1)
Options Map 4 Duplex Unit Controller Board
Options Duplex Unit Motors and Solenoid
Yes
Replace the
connector.
Replace the Duplex
Control Board
(page 5-139).
Go to Step 4.
Replace the Motor
Driver Board (see
Book 1)
No
Go to Step 2.
Go to Step 3.
Replace the
DUPLEX Harness.
Go to Step 5.
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