02/20002-40 DocuPrint N2025/N2825RAP 39Initial IssueStatus Indicator Repair Analysis ProceduresRAP 39 Turn Roll Clutch AssemblyProcedureEnter Diagnostics and select Component Test. Scroll to Turn Roll Clutch Assembly and pressEnter. You can hear the Turn Roll Clutch Assembly energize.Y NSwitch the printer power off. Remove the Left Side Cover (REP 1.1) and the Print EngineController PWB Cover (REP 8.5). Disconnect P/J12 on the Print Engine Controller PWB.Measure the resistance between pins 10 and 11 on the disconnected plug. The resis-tance is approximately 170 to 185 ohms.Y NRemove the MBF Assembly. On the MBF assembly measure the resistance betweenP121 pin 7 and pin 8. The resistance is approximately 170 to 185 ohms.Y NRemove the MBF Gear Cover. Disconnect the Turn Roll Clutch Assembly inlineconnector (P/J124). Measure the resistance of the clutch. The resistance isapproximately 170 to 185 ohms.Y NReplace the Turn Roll Clutch Assembly (REP 2.3).Repair or replace the MBF Combo Harness (PL 4.2).Repair or replace the MBF Harness (P/J12 to P/J121) (PL 9.1).Switch the printer power on. Measure the voltage between P/J12 pin 10 on the PrintEngine Controller PWB and frame ground. The voltage is +24VDC.Y NMeasure the voltage between P/J16 pin 9 and frame ground. The voltage is+24VDC.Y NReplace the LVPS (REP 8.6).Replace the Print Engine Controller PWB (REP 8.5).Switch the printer power off. Reconnect P/J12. Enter Diagnostics and select ComponentTest. Scroll to Turn Roll Clutch Assembly. Measure the voltage between P/J12 pin 11 andframe ground. Press the Enter key. The voltage drops from +24VDC to 0.0VDC.Y NReplace the Print Engine Controller PWB (REP 8.5).Switch the printer power off. Open the Top Cover and remove the Print Cartridge. With theTop Cover open, cheat the Top Cover Interlock. Enter Diagnostics and select ComponentTest. Scroll to Main Motor and press Enter. Scroll to Turn Roll Clutch Assembly and pressEnter. The Turn Rolls rotate smoothly without stalling or jerking.Y NReplace the Registration Clutch (REP 4.3) or Turn Roll Assembly (REP 2.4) as nec-essary.Problem Solved.Switch the printer power off. Open the Top Cover and remove the Print Cartridge. With the TopCover open, cheat the Top Cover Interlock. Enter Diagnostics and select Component Test.Scroll to Main Motor and press Enter. Scroll to Turn Roll Clutch Assembly and press Enter.The Turn Rolls rotate smoothly without stalling or jerking.Y NReplace the Turn Roll Clutch Assembly (REP 2.3) or Turn Roll Assembly (REP 2.4) asnecessary.Problem Solved.AA
