02/20002-49DocuPrint N2025/N2825 RAP 51Status Indicator Repair Analysis ProceduresInitial IssueRAP 51 500 Sheet Feeder Feed SolenoidThe 500 Sheet Feeder is not feeding paper or not feeding paper at the correct time.ProcedureEnter Diagnostics and select Component Test. Scroll to Tray 2 Feed Sol or Tray 3 Feed Sol andpress Enter. You can hear the solenoid energize.Y NSwitch the printer power off. Remove the 500 Sheet Feeder Left Cover (REP 11.3). Dis-connect P/J133 on the Feeder PWB. Measure the resistance between pins 10 and 11 onthe disconnected plug. The resistance is approximately 90 ohms.Y NDisconnect P/J135 from the Feed Head Assembly. On the Feed Head Assembly,measure the resistance between P135 pin 1 and pin 2. The resistance is approxi-mately 90 ohms.Y NReplace the Tray 2 or 3 Feed Solenoid (REP 11.11).Repair or replace the Feed Head Harness (P/J133 to P/J135) (PL 11.3).Switch the printer power on. Measure the voltage between P/J133 pin 10 on the FeederPWB and frame ground. The voltage is +24VDC.Y NMeasure the voltage between P/J132 pin 3 and frame ground. The voltage is+24VDC.Y NSwitch the printer power off. Remove the printer Left Side Cover (REP 1.1) andthe Print Engine Controller PWB Cover (REP 8.5). Switch the printer power on.Measure the voltage between P/J13 pin 3 and frame ground. The voltage is+24VDC.Y NReplace the Print Engine Controller PWB (REP 8.5).Check the continuity of the Feeder Harnesses (P/J132 to P/J131 and P/J131 toP/J13). Repair or replace as necessary (PL 11.3).Replace the Feeder PWB (REP 11.8).Switch the printer power off. Reconnect P/J133. Enter Diagnostics and select ComponentTest. Scroll to Tray 2 Feed Sol or Tray 3 Feed Sol. Measure the voltage between P/J133pin 11 and frame ground. Press the Enter key. The voltage drops from +24VDC to0.0VDC.Y NMeasure the voltage between P/J132 pin 4 and frame ground. Press the Enter key.The voltage changes from 0.0VDC to 3.2VDC.Y NSwitch the printer power off. Remove the printer Left Side Cover (REP 1.1) andthe Print Engine Controller PWB Cover (REP 8.5). Switch the printer power on.Measure the voltage between P/J13 pin 4 and frame ground. The voltagechanges from 0.0VDC to 3.2VDC.Y NReplace the Print Engine Controller PWB (REP 8.5).Check the continuity of the Feeder Harnesses (P/J132 to P/J131 and P/J131 toP/J13). Repair or replace as necessary (PL 11.3).Replace the Tray 2/3 Feeder PWB (REP 11.8).Check for mechanical binding of the solenoid or a defective spring. If the problem persists,replace the Tray 2/3 Feed Solenoid (REP 11.11).Scroll to Main Motor and press Enter. The Tray 2/3 Feed Rolls will rotate one revolution andfeed a sheet of paper. Open and close the Top Cover to stop the Main Motor. Open the printerand remove the sheet of paper. Scroll to Main Motor and press Enter. Scroll to Turn Roll Clutchand press Enter. Scroll to Tray 2 Feed Sol or Tray 2 Feed Sol and press Enter. A sheet ofpaper is fed from Tray 2/3 to the Registration Rolls.Y NReplace the Tray 2/3 Feed Solenoid (REP 11.11).Problem solved.AABBCCDD
