1 – 126Chapter 1 TroubleshootingFIP- 1.P9 SpotsBefore commencing troubleshooting, check the paper transfer course. Make sure there is no foreignarticles on the transfer course, such as staples, paper clips, scraps of paper and so on.Print defectThere are toner spots all over the paper disorderedly.ESS and possible causes- EP CARTRIDGE- HVPS/MCU (PL12.1.19)- BTR ASSY (PL8.1.21)- 150 FEEDER ASSY (PL5.1.1)- ROS ASSY (PL8.1.1)- GUIDE ASSY CRU R (PL8.1.25)- PWBA ESS (PL12.1.13)- 550 FEEDER ASSY (PL7.1.10)Step Check Yes No1Checking EP CARTRIDGEInstall a new EP CARTRIDGE.Carry out a test printing.Have the spots gone?End of work Go to step 2.2Checking BTR ASSYRemove BTR ASSY. (RRP8.10)Check if any stains and/or wear on BTR ASSY.Are there any stains and/or wear on BTR?Go to step 3. Replace BTRASSY. (RRP8.10)3 Checking ROS ASSYAre the connectors on ROS ASSY surely connected? Go to step 4. Reconnect the con-nectors.4Checking the image development processOperate Test Print, and turn off the power of the printerwhile printing.Remove the EP CARTRIDGE with care, and check thetoner image formed on the drum, right before the tran-scribe part (BTR).Is the image on the drum completely formed?Is the area clear and black, and easily read?Go to step 5. Go to FIP1.41HVPS/MCU.5Checking Heat Roll and Pressure RollRemove FUSER ASSY. (RRP8.8)Warning; Start the operation after the FUSER ASSYhave cooled down.Turn the Gear HR with a finger, and check the Heat Rolland Pressure Roll.Are the Heat Roll and Pressure Roll damaged orstained?Go to step [ESSand possiblecauses].Replace FUSERASSY. (RRP8.8)
