Konica Minolta magicolor 1680MF Service Manual page 352

Field Service Ver. 1.0 Nov. 2008
4.3 Solution
4.3.1 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 paper 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 paper?
Are the actuators found operational when checked for
correct operation?
4.3.2 Misfeed at tray 2 media feed section
A. Detection timing
Type
Detection of
The media does not unblock the registration sensor (PS2) even after the lapse of
misfeed at tray 2
a given period of time after the media feed solenoid (SD6) is turned ON.
media feed section
B. Action
Registration sensor (PS2)
Media feed solenoid (SD6)
Step
1 Initial check items
2 PS2 sensor check
3 SD6 operation check
4 Change PRCB.
Check Item
Relevant electrical parts
Action
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Action
Change the media.
Change the media.
Instruct the user in correct paper storage.
Clean or change the media path.
Clean or change the defective roll/roller.
Set as necessary.
Correct or change the defective actuator.
Description
Print control board (PRCB)
WIRING DIAGRAM
Control signal
⎯
PRCB PJ12-6 (ON)
PCCB CN3-2 (ON)
⎯
4. Jam display
Location (electri-
cal component)
⎯
C-3
B-5
⎯
15