Konica Minolta magicolor 1680MF Service Manual page 372

Field Service Ver. 1.0 Nov. 2008
4.4 Solution
4.4.1 Initial check items
• When a media misfeed occurs, first check the following initial check items.
Does the media meet product specifications?
Is media curled, wavy, or damp.
Is a foreign object present along the media path, or is
the media path deformed or worn?
Are the rolls/rollers dirty, deformed, or worn?
Are the edge guide and trailing edge stop at the correct
position to accommodate the media?
Are the actuators found operational when checked for
correct operation?
4.4.2 Misfeed at Duplex Option reverse drive/storage section
A. Detection timing
Type
Detection of mis-
feed at Duplex The transport sensor/1 (PS15) is not unblocked even after the lapse of a predeter-
Option reverse mined period of time after the switchback motor (M5) has been energized for
drive/storage sec- reverse drive.
tion
B. Action
Transport sensor/1 (PS15)
Transport motor (M1)
Switchback motor (M5)
Step
1 Initial check items.
2 Check the PS15 sensor.
3 Check M6 for correct operation.
4 Check M5 for correct operation.
5 Change ADDB.
6 Change PRCB.
Check Item
Relevant electrical parts
Action
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Action
Change the media.
Change the media.
Instruct the user in correct media storage.
Clean or change the media path.
Clean or change the defective roll/roller.
Set as necessary.
Correct or change the defective actuator.
Description
AD drive board (ADDB)
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
⎯
ADDB CN4-3 (ON)
ADDB CN7-1 to 4
ADDB CN3-1 to 4
⎯
⎯
4. Jam display
Location
(Electrical
component)
⎯
G-5
G-3
G-3
⎯
⎯
15