Konica Minolta BIZHUB 25E Field Engineering Manual page 231

4.5.6 Blank lines
Scanner section
Section Step Check item
Scanner section 1
2
3
Printer section
Section Step Check item
LED print head 1
Drum cartridge 2
Fuser unit 3
Circuit boards 4
Transfer section 5
Discharge plate 6
7
Are the document glass and docu-
ment pad dirty?
Do the connection from CIS to main
control board remain intact?
Is the trouble settled with above
steps?
Is the lens dirty?
Are the separation scrapers dirty or
damaged?
Are the fusing rollers or separate
blade dirty or damaged?
Are the connections from LED print
head and from high-voltage board to
main control board in good condition?
(Check plugs firmly plugged and
snapped harness.)
Is the transfer roller dented or dam-
aged?
Is the discharge plate deformed?
Is the trouble settled with above
steps?
Result Remedy
Yes Clean
No Reconnect / Replace harness.
No 1. Adjust the background level.
2. Replace CIS.
3. Replace main control board.
Result Remedy
Yes Clean
Yes Clean / Replace
Yes Replace fuser unit
No Reconnect / Replace harness
Yes Replace
Yes Replace
No 1. Replace drum cartridge.
2. Replace fuser unit.
3. Replace LED print head.
4. Replace main control board.
5. Replace high-voltage power
board.
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