1 - 75Chapter 1 TroubleshootingFIP2.19 Electrical NoiseStep Check Yes NoPossible causative parts:HVPS/MCU (PL12.1.19)GUIDE ASSY CRU R (PL8.1.25)FUSER ASSY (PL8.1.20)EP CARTRIDGEHARNESS ASSY ANT (PL8.1.24)HARNESS ASSY AC100V/200V (PL12.1.8)HARNESS ASSY LVPS (PL12.1.1)Option 550 Paper FeederPWBA FEEDER 550 (PL20.1.34)PWBA DUPLEX (PL21.1.32)1Checking a foreign noiseAre there any other electrical appliances within 3 m of theprinter, such as generators, radios and appliances withmotors?Either turn off the other electrical appliances, or re-locatethe printer at least 6 m from other appliances.Does the electrical noise problem still occur?Go to step 2. End of work2Checking AC groundIs AC power supply outlet wired and groundedappropriately?Go to step 3.Request the clientto fix AC powersupply outlet.3Checking HARNESS ASSY AC100V/200VIs the cable connected to HARNESS ASSY AC100V/200Vappropriately grounded?Go to step 4.Install the groundscrewappropriately.4Checking after replacing EP CARTRIDGEReplace EP CARTRIDGE.Does the electrical noise problem still occur, afterreplacement?Go to step 5. End of work5Checking GUIDE ASSY CRU R (1)Does the Plate Earth of GUIDE ASSY CRU R contactterminals on HVPS/MCU appropriately?Go to step 6.Replace GUIDEASSY CRU R.(RRP8.13)6Checking GUIDE ASSY CRU R (2)Remove EP CARTRIDGE.Remove GUIDE ASSY CRU R. (RRP8.13)Is the Plate Earth of GUIDE ASSY CRU R normal and notdamaged or soild, or there is no disturbing object?Go to step 7.Clean the plate orreplace GUIDEASSY CRU R.(RRP8.13)7Checking HARNESS ASSY ANT for continuityDisconnect P/J15 from HVPS/MCU.Is J15 <=> J150 continuous normally?Go to step 8.ReplaceHARNESS ASSYANT.
