Minolta Magicolor 3100 Series Service Manual page 86

FIP-P5 Horizontal Band Deletions
There are areas of the image that are extremely light or are missing entirely.
These missing areas from wide bands that run horizontally across the page parallel with the paper feeding
direction.
M Initial check M
Incorrect parts, improper installation, damage, deformation, dirt, foreign substance attached, etc.
∇ Major parts to be checked ∇
Imaging Unit (PHD), FUSER ASSY, Transfer Unit (BTR), ROS ASSY, PWBA HNB MCU, SUB HVPS
Item
Faulty Imaging Unit (PHD)
1 Is the image quality improved if Imaging Unit (PHD) is
replaced?
Faulty ROS ASSY
2
Is the image quality improved if ROS ASSY is replaced?
Faulty FUSER ASSY
3 Check the HEAT ROLL and NIP BELT for evidence of
damage, dirt, or foreign substances.
Faulty Transfer Unit (BTR)
4 Is the image quality improved if Transfer Unit (BTR) is
replaced?
Checking the cyclicity
Check if a trouble occurs cyclically. Measure the
5
distance between spots and compare with the roller
table on page 81.
1-86
Condition / initial check
Check Remedy
Replace the Imaging Unit (PHD)
Replace the ROS ASSY
Replace the FUSER ASSY
Replace the Transfer Unit (BTR)
Replace the parts concerned