02/20002-31DocuPrint N2025/N2825 RAP 29Status Indicator Repair Analysis ProceduresInitial IssueRAP 29 Main Motor AssemblyProcedureOpen the Top Cover and remove the Print Cartridge. Cheat the Top Cover Interlock. EnterDiagnostics and select the Component Test. Scroll to Main Motor and press Enter. The MainMotor rotates.Y NSwitch the printer power off. Remove the Lower Rear Cover (REP 1.7). Switch the printerpower on. Measure the voltages listed in Table 1 on the LVPS.All voltages are correct.Y NThe voltages on pin 1 and pin 2 are correct.Y NReplace the LVPS (REP 8.6).The voltage on pin 6 is correct.Y NReplace the Print Engine Controller PWB (REP 8.5).The voltage on pin 5 is correct.Y NCheck the voltage on P/J161 pin 11. The voltage is 3.3VDC.Y NReplace the LVPS (REP 8.6).Replace the Print Engine Controller PWB (REP 8.5).Replace the LVPS (REP 8.6).With the Top Cover Interlock still cheated. Enter Diagnostics and select the ComponentTest. Scroll to Main Motor. Measure the voltage between P/J164 pin 6 and frame ground.Press the Enter key. The voltage drops from 7.0 VDC to 0 VDC.Y NRemove the cheater from the Top Cover Interlock, then reinstall the cheater. WithMain Motor still selected, Measure the voltage on the LVPS between P/J161 pin 8and frame ground. Press the Enter key. The voltage drops from 7.0 VDC to 0 VDC.Y NReplace the Print Engine Controller PWB (REP 8.5).Replace the LVPS (REP 8.6).Replace the Main Motor Assembly (REP 6.2).Problem solved.Table 1 Main Motor HarnessFrom To VoltageP/J164 - Pin 1 Frame Ground 24 VDCP/J164 - Pin 2 Frame Ground 24 VDCP/J164 - Pin 5 Frame Ground 3.2 VDCP/J164 - Pin 6 Frame Ground 7.0 VDCP/J164 - Pin 7This voltage validif printer set for1200 DPIFrame Ground 6.3 VDCAABBCC
