3-76 Phaser 7400 Color Printer Options Service ManualDuplex Unit Flash Memory FailureApplicable Status Code:Code 246: Hardware failure with Duplex Unit Flash Memory.Initial Actions:■ Cycle the printer's power.■ If the problem persists follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack References■ Duplex Unit■ Motor Driver Board■ Print Engine Map 5 (see Book 1)■ Print Engine Motor Driver Board (5/6) (see Book 1)■ Options Map 4 Duplex Unit Controller BoardTroubleshooting Procedure TableStep Actions and Questions Yes No1 Check the Duplex Unit connector fordamage.Is the connector damaged?Replace theconnector.Replace theDuplex Unit(page 5-122). If theerror persists, goto Step 2.2 Check all pins on the DUPLEX Harness forcontinuity.Disconnect the DUPLEX Harness.Is the DUPLEX Harness conductive?Replace the MotorDriver Board (seeBook 1). If the errorpersists, go to Step3.Replace theDUPLEX Harness.3 Check all pins of the DRV1 harness forcontinuity.Disconnect the DRV1 ribbon cable.Is the cable conductive?Replace the EngineControl Board (seeBook 1).Replace the DRV1Harness.
