1 – 110Chapter 1 TroubleshootingFIP4.12 CLUTCH PR-REGIStep Check Yes NoPossible causes:CLUTCH PR-REGI (PL20.2.22)Option 550 Paper Feeder 550 PAPER CASSETTE(PL20.3.50)PWBA FEEDER 550 (PL20.1.34)HARNESS ASSY CLSNR1 (PL20.2.31)HARNESS ASSY CLSNR2 (PL20.1.36)HARNESS ASSY FDR2 (PL20.1.5)HVPS/MCU (PL12.1.19)LVPS (PL12.1.5)HARNESS ASSY FDR1 (PL12.1.21)1Checking HARNESS ASSY CLSNR1 for continuityDisconnect P/J855.Disconnect P/J854. Is each cable between J855 andJ854 continuous?Go to step 2.Replace HAR-NESS ASSYCLSNR1.2Checking HARNESS ASSY CLSNR2 for continuityDisconnect P/J85 from PWBA FEEDER 550.Disconnect P/J855.Is each cable between J85 and J855 continuous?Go to step 3.Replace HAR-NESS ASSYCLSNR2.3Checking the resistance of CLUTCH PR-REGIIs the resistance of the wire wound resistor between P/J854-1 and P/J854-2 of CLUTCH PR-REGI, 172 ohm+/-10% (at 20 °C)?Go to step 4.Replace CLUTCHPR-REGI.(RRP20.15)4Checking PWBA FEEDER 550 for continuityDisconnect P/J83 from PWBA FEEDER 550.Is there continuity betweenP83-3 and P85-3?Go to step 5.Replace PWBAFEEDER 550.(RRP20.8)5Checking HARNESS ASSY FDR2 for continuityRemove HARNESS ASSY FDR2.Is there continuity between J2083 and J83?Go to step 6.Replace HAR-NESS ASSYFDR2.6Checking HARNESS ASSY FDR1 for continuityRemove HARNESS ASSY FDR1.Is there continuity between J20 and J2083?Go to step 7.Replace HAR-NESS ASSYFDR1.7Checking the power to CLUTCH PR-REGIRemove EP CARTRIDGE.Is the voltage across P20-10(+) and P20-9(-) on HVPS/MCU, 24 VDC?ReplaceCLUTCH PR-REGI.(RRP20.15)Go to step 8.8Checking HVPS/MCU for continuityDisconnect P/J10 from HVPS/MCU.Is there continuity between P10-1 and P20-10?Go to FIP1.24LVPS.Replace HVPS/MCU. (RRP12.10)
