02/20002-38 DocuPrint N2125RAP 41 , RAP 42Initial IssueStatus Indicator Repair Analysis ProceduresRAP 41 MBF Feed SolenoidProcedureEnter Diagnostics and select Component Test. Scroll to Confirm MBF Feed Solenoid and pressEnter. You can hear the MBF Feed Solenoid energize.Y NSwitch the printer power off. Remove the Left Interface Cover (REP 1.1), Left Cover (REP1.2), and the Left Plate Assembly (REP 1.11). Disconnect P/J23 on the Print Engine Con-troller PWB. Measure the resistance between pins 6 and 12 on the disconnected plug.The resistance is approximately 75 to 95 ohms.Y NRemove the Front Cover (REP 1.6) and the Left Front Cover (REP 1.7). DisconnectP/J44 from the Connector PWB. Measure the resistance between pins 1 and 2 onthe disconnected plug. The resistance is approximately 75 to 95 ohms.Y NReplace the MBF Feed Solenoid (REP 4.9).Replace the Connector PWB (REP 9.7).Reconnect P/J23. Switch the printer power on. Check the voltage between P/J23 pin 6and frame ground. The voltage is +24VDC.Y NReplace the Print Engine Controller PWB (REP 9.3).Enter Diagnostics and select Component Test. Scroll to Confirm MBF Feed Solenoid.Check the voltage between P/J23 pin 12 and frame ground. Press Enter. The voltagedrops from +24VDC to 0.0VDC when you press Enter.Y NReplace the Print Engine Controller PWB (REP 9.3).Replace the MBF Feed Solenoid (REP 4.9)Switch the printer power off. Open the Front Cover and remove the Print Cartridge. With theFront Cover open, cheat the Front Cover Interlock. Enter Diagnostics and select ComponentTest. Scroll to Main Motor and press Enter. Scroll to Confirm MBF Feed Solenoid and pressEnter. The MBF Feed Rolls make one complete revolution then stop.Y NReplace the MBF Feed Solenoid (REP 4.9).The MBF Feed Solenoid appears to operate correctly. If the problem persists, replace the PrintEngine Controller PWB (REP 9.3).RAP 42 System Controller IsolationProcedureSwitch the printer power off. Disconnect all cables connected to the rear of the System Control-ler PWB. Remove the Left Interface Cover (REP 1.1). Remove all options from the SystemController PWB. Switch the printer power on. The printer boots up correctly and Ready isdisplayed on the Control Panel (if no options are installed, follow the No path).Y NSwitch the printer power off. Remove then reinstall the System Controller PWB (REP 9.2)to reseat the connection with the Print Engine Controller PWB. Switch the printer poweron. The printer boots up correctly and Ready is displayed on the Control Panel.Y NReplace the System Controller PWB (REP 9.2).Problem Solved.Switch the printer power off. Reinstall one of the removed options or cables. Switch the printerpower on. The printer boots up correctly and Ready is displayed on the Control Panel.Y NReplace the option or cable just installed.Repeat the last step with the next option or cable until the problem is found.
