Black Spots - Konica Minolta 7115 Service Manual

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Black spots

Section Step
Output 1 Toner is present along the paper path.
system
2 PC Drum is dirty or scratchy.
3 Tip of the PC Drum Paper Separator
Finger is dirty, scratchy, deformed, worn,
or damaged.
4 Left Fusing Roller is dirty or scratchy.
5 Tip of the Fusing Paper Separator Fin-
ger is dirty, scratchy, deformed, worn, or
damaged.
6 Image condition changes after "VG
Adjustment" has been made.
Input 1 Original Glass is dirty or scratchy.
system
2 CCD Board (copier: PWB-J) connector
is loose.
3 Control Board (copier: PWB-C) connec-
tor PJ1A is loose.
Check Result
YES • Clean.
YES • Clean or change.
YES • Clean or change.
YES • Clean or change.
YES • Clean or change Fus-
YES • Readjust.
YES • Clean.
YES • Reconnect.
YES • Reconnect.
NO
T-52
Action
ing Paper Separator
Fingers and finger
springs.
For details, see
SWITCHES ON PWBs/
TECH. REP. SET-
TINGS.
• Change CCD Unit.
• Change Control Board
(copier: PWB-C).