3-164 Phaser 7400 Color Printer Service Manual+24V Not Available to the Duplex UnitAbnormal 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 TableApplicable Parts Wiring and Plug/Jack References■ Motor Driver Board, PL2.1.10■ LVPS, PL3.1.1■ Duplex Unit, PL16.1.1A■ Print Engine Map 5 (page 10-8)■ Print Engine Map 6 (page 10-9)■ Print Engine Motor Driver Board (1/6) (page 10-31)■ Print Engine Motor Driver Board (5/6) (page 10-35)■ Print Engine LVPS (page 10-39)■ Options Map 4 Duplex Unit Controller Board■ Options Duplex Unit Motors and SolenoidTroubleshooting Procedure TableStep Actions and Questions Yes No1 Check the Duplex Unit connector fordamage.Is the connector damaged?Replace theconnector.Go to Step 2.2 Check for +24 V at DUPLEX on the MotorDriver Board.1. Close the Interlock Switches.2. Disconnect DUPLEX.Is there +24 V at DUPLEX-6 and -13 <=>ground?Replace the DuplexControl Board.Go to Step 3.3 Check all pins on the DUPLEX Harness forcontinuity.Disconnect the DUPLEX Harness.Is the DUPLEX Harness conductive?Go to Step 4. Replace theDUPLEX Harness.4 Check for +24 V from the LVPS.Disconnect POW24 on the Motor DriverBoard.Is there +24 V at POW24-1 <=> ground?Replace the MotorDriver Board(page 8-141)Go to Step 5.
