T-13
3.
PAPER MISFEED(Document Feeder Section)
Misfeed Detection Timing and Troubleshooting Procedures
(1)
The Original misfeeds
<Detection Timing>
<Troubleshooting Procedures>
Type
Description
ADF Jam
• The Paper Take-Up Sensor is not unblocked after the predeter-
mined period of time has elapsed after document feeding
began.
• The Paper Take-Up Sensor is not blocked after the predeter-
mined period of time has elapsed after the Paper Take-Up Sen-
sor is unblocked.
• The Exit Sensor is not unblocked after the predetermined
period of time has elapsed after the Paper Take-Up Sensor is
unblocked.
• The Exit Sensor is not blocked after the predetermined period
of time has elapsed after the Paper Take-Up Sensor is blocked.
ADF remains paper
jam
If all of the following conditions are met
• The Automatic Document Feeder is in standby.
• The Document Feeder Cover is closed.
• The Original Detection Sensor is blocked.
• Either the Paper Take-Up Sensor or the Leading Edge Detec-
tion Sensor or both sensors are blocked.
Relevant Electrical Parts
Original Detection Sensor (PC1)
Paper Take-Up Sensor (PC2)
Leading Edge Detection Sensor (PC3)
Automatic Document Feeder Control Board
(PWB-A ADF)
Step
Action
Ref. Page
WIRING DIAGRAM
Control Signal
Location
(Electrical
Component)
1
Initial checks
☞
T-6
–
–
2
PC1 sensor check
☞
T-45
PWB-A ADF PA02A ADF-1
C~D-4~5
3
PC2 sensor check
☞
T-45
PWB-A ADF PA06A ADF-1
D~E-4~5
4
PC3 sensor check
☞
T-45
PWB-A ADF PA03A ADF-1
I-6~7
5
Replace PWB-A ADF.
–
–
–
