Error Messages and Codes 3-103Transfer Unit Fan FailureApplicable Status Code:Code T40: Transfer Unit Fan FailureInitial Actions:■ Cycle the printer's power.■ If the problem persists follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack References■ Transfer Unit Fan, PL5.1.48■ Motor Driver Board, PL2.1.10■ Print Engine Map 5 (page 10-8)■ Print Engine Map 7 (page 10-10)■ Print Engine Motor Driver Board (2/6) (page 10-32)Troubleshooting Procedure TableStep Actions and Questions Yes No1 Test the Transfer Unit Fan.Run the Service Diagnostics Belt Fan test.Does the Fan operate correctly.Replace the EngineControl Board(page 8-112).Go to Step 2.2 Check the Fan connection.Is BELTFAN on the Motor Driver Boardsecurely connected?Go to Step 3. Connect the Fan.3 Check for +24 V at the Fan connector.Disconnect the Fan from BELTFAN.Is there +24 V between BELTFAN-1 <=>ground?Replace the Fan(page 8-134).Go to Step 4.4 Check for +24 V at the POW24 connector.Disconnect the POW24 Harness from theMotor Driver Board.Is there +24 V between POW24-1 <=>ground?Replace the MotorDriver Board(page 8-141).Go to Step 5.5 Check continuity of the POW24 Harness.Is the wiring harness conductive?Replace the LVPS(page 8-121)Replace theharness.
