Chapter 1 Troubleshooting
1-85
FIP-P4 Vertical Band Deletions
Condition / initial check
∆There are areas of the image that are extremely light or are missing entirely.
These missing areas form wide bands that run vertically along the page in the pa per feeding direction.
▼ Initial check ▼
Incorrect parts, improper installation, damage, deformation, dirt, foreign su bstance attached, etc.
∇ Major parts to be checked ∇
Imaging Unit (PHD), FUSER ASSY, Transfer Unit (BTR), ROS ASSY, PWBA HNB MCU, SUB HVPS
Item Check Remedy
1
Faulty Imaging Unit (PHD)
Is the image quality improved if Imaging Unit (PHD) is
replaced?
Replace the Imaging Unit (PHD)
2Faulty ROS ASSY
Is the image quality improved if ROS ASSY is replaced? Replace the ROS ASSY
3
Faulty FUSER ASSY
Check the HEAT ROLL and NIP BELT for evidence of
damage, dirt, or foreign substances.
Replace the FUSER ASSY
4
Faulty Transfer Unit (BTR)
Is the image quality improved if Transfer Unit (BTR) is
replaced?
Replace the Transfer Unit (BTR)