1 - 373Chapter 1 TroubleshootingVersion 4 2008.12.22FIP-1.P4 Vertical blank lines (White stripes in paper transport direction)Trouble substanceThere are some extremely faint or completely non-printed parts. Those nonprinted parts cover a widearea vertically, along the paper feeding direction.Possible causative parts- ROS ASSY (PL4.1.1)- PHD UNIT (PL4.1.21)- TRANSFER ASSY (PL6.1.7)- PWBA CONT AIO (PL10.6.6)- PWBA MCU (PL10.7.7)- IIT ASSY SUB (PL10.9.2)Before commencing troubleshooting, check the paper transfer path. Make sure there is no foreignmaterials on the transfer path, such as staples, paper clips, scraps of paper and so on.Step Check RemedyYes No1 Checking the error modeDoes the error occur only during copying? Go to step 2. Go to step 5.2 Checking the originalIs the original color clean? Go to step 3. Change theoriginal.3Checking the PWBA CONT AIO installationReseat the PWBA CONT AIO. (Removal 24/Replacement36)Does the error still occur when copying?Go to step 4. End of work.13 1313 1313 1313 13RandomPeriodic