3-20 Phaser 7400 Color Printer Service ManualJam at Door A Misfeed at Tray 1 (MPT)Media reached the Duplex Reverse Sensor, but a second sheet was detected enteringthe feed path from Tray 1 (MPT). This error represents a misfeed jam for media fedfrom Tray 1 (MPT).Applicable Status Code:Code A3: Jam at Door A, Misfeed at Tray 1 (MPT)Initial Actions:■ Cycle printer power.■ If the problem persists, follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack References■ Tray 1 (MPT) Feed Roller, PL10.1.53■ Tray 1 (MPT) Pick Roller, PL10.1.43■ Tray 2 Registration Motor, PL4.2.36■ Tray 2 Feed Motor, PL4.2.35■ Front Sensor Board, PL4.2.97■ Print Engine Map 5 (page 10-8)■ Print Engine Front Sensor Board (1/2) (page 10-26)■ Print Engine Front Sensor Board (2/2) (page 10-27)■ Print Engine Motor Driver Board (4/6) (page 10-34)Troubleshooting Procedure TableStep Actions and Questions Yes No1 Check the following for evidence of fault,dirt, debris, or damage:■ Tray 1 (MPT) Feed Rollers■ Registration Rollers■ Sensor ActuatorIs there any damage or debris?Clean or replacethe appropriateparts.Go to Step 2.2 Test the Registration #1 Sensor.Run the Service Diagnostics RegistrationEntrance Sensor test.Does the sensor operate correctly?Go to Step 3. Replace theactuator. If theerror persists,replace the FrontSensor Board(page 8-150).3 Test the Feed Motor, Registration Motor,and Registration Clutch #1.Do the components function correctly?Replace the EngineControl Board(page 8-112).Go to Step 4.4 Check each motor and clutch harness.Are the harnesses properly connected andfree from defects?Replace the EngineControl Board(page 8-112).Replace theharness and/orproblem motor/clutch.
