2-13Phaser 3635MFP 03-900, 03-940Status Indicator RAPsDraft 403-900 Main PWB to GUI Communications Fault RAP03-900 A user interface to main PWB communications error has been detected.ProcedureWARNINGSwitch off the electricity to the machine. Disconnect the power cord from the customersupply while performing tasks that do not need electricity. Electricity can cause death orinjury. Moving parts can cause injury.Refer to Wiring Diagram 4. Perform the following:1. Switch off the machine, then switch on the machine.2. Check the wiring between CN6 on the Main PWB and CN2 on the UI PWB.3. Check the wiring between CN10 on the Main PWB and CN11 on the UI PWB.4. Check the wiring between CN11 on the Main PWB and CN1 on the UI PWB.5. If necessary:a. Install a new UI PWB, PL 2.10 Item 4.b. Perform OF7 Main PWB Check RAP.03-940 Main PWB to Tray 2 Communications Fault RAP03-940 A main PWB to tray 2 PWB communications error has been detected.ProcedureWARNINGSwitch off the electricity to the machine. Disconnect the power cord from the customersupply while performing tasks that do not need electricity. Electricity can cause death orinjury. Moving parts can cause injury.Refer to Wiring Diagram 7 and Wiring Diagram 11. Perform the following:1. Switch off the machine, then switch on the machine.2. Check the wiring between CN33 and CN34 on the Main PWB and CN7 on the Tray 2PWB.3. If necessary:a. Install new components:• Tray 2 connector, PL 8.15 Item 9.• Tray 2 PWB, PL 8.17 Item 25.b. Perform OF7 Main PWB Check RAP.
