1 - 64Chapter 1 TroubleshootingFIP2.8 SENSOR TONER (PL5.1.46)Step Check Yes NoPossible causative parts:SENSOR TONER (PL5.1.46)SENSOR TONER ASSY (PL5.1.45)HARNESS ASSY TONER1 (PL5.1.50)HARNESS ASSY TONER2 (PL12.1.28)EP CARTRIDGEHVPS/MCU (PL12.1.19)1 Checking EP CARTRIDGE (1)Does sufficient toner in EP CARTRIDGE remain? Go to step 3. Go to step 2.2Checking EP CARTRIDGE (2)Does the problem still occur, after replacing EPCARTRIDGE?Go to step 3. End of work3Checking SENSOR TONER ASSY installationIs SENSOR TONER ASSY installed correctly, and doesHOLDER-D operate smoothly?Go to step 4.ReplaceSENSOR TONERASSY.4Checking HARNESS ASSY TONER1 for continuityRemove HARNESS ASSY TONER1.Is J220 <=> J221 continuous normally?Go to step 5.ReplaceHARNESS ASSYTONER1.5Checking HARNESS ASSY TONER2 for continuityRemove HARNESS ASSY TONER2.Is J22 <=> J221 continuous normally?Go to step 6.ReplaceHARNESS ASSYTONER2.6Checking SENSOR TONERReplace SENSOR TONER. (RRP5.9)Does the problem still occur, after replacement?ReplaceHVPS/MCU.(RRP12.10)End of work