Solution; Initial Check Items; Misfeed At Tray 2 Paper Feed Section - Konica Minolta magicolor 2400W Service Manual

Field Service Ver. 2.0 Apr. 2005
4.4

Solution

4.4.1

Initial Check Items

• When a paper misfeed occurs, first check the following initial check items.
Does the paper meet product specifications?
Is paper curled, wavy, or damp.
Is a foreign object present along the paper path, or is the
paper path deformed or worn?
Are the Paper Separator Fingers dirty, deformed, or
worn?
Are the rolls/rollers dirty, deformed, or worn?
Are the Edge Guide and Trailing Edge Stop at the cor-
rect position to accommodate the paper?
Are the actuators found operational when checked for
correct operation?
4.4.2

Misfeed at Tray 2 paper feed section

A. Detection Timing
Type
Detection of mis- The leading edge of the paper does not block the Registration Sensor (PC1) even
feed at Tray 2 paper after the lapse of a predetermined period of time after the Lower Feeder Paper
feed section Pick-up Solenoid (SL7 PF) has been energized.
B. Action
Registration Sensor (PC1)
Lower Feeder Paper Pick-up Solenoid (SL7 PF)
Step
1 Check the initial check items.
Check the PWB-A connector for proper connec-
2
tion and correct as necessary.
3 Check the PC1 sensor.
4 Check SL7 PF for correct operation.
5 Change PWB-A.
Check Item
Relevant Electrical Parts
Action
Action
Change the paper.
Change the paper.
Instruct the user in correct paper storage.
Clean or change the paper path.
Clean or change the defective Paper Separa-
tor Finger.
Clean or change the defective roll/roller.
Set as necessary.
Correct or change the defective actuator.
Description
Mechanical Control Board (PWB-A)
WIRING DIAGRAM
Control Signal
-
-
PWB-A PJ12A-3 (ON)
PWB-A PF
PJ22A PF-2 (REM)
-
4. Jam Display
Location
(Electrical
Component)
-
-
2-C
(Main Unit)
4-E
-
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