Panasonic KV-S1027C - Page 64

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4. Rollers have reached their
life expectancy.
1. Replace the Paper Feed Roller and Double Feed
Prevention Roller after checking each
roller configuration and Scanner Counter of
Service Utility software.
2. After replacing the Double Feed Prevention Roller
and Paper Feed Roller, perform "Clear Counter
(After Replace Roller)" in the service utility to
clear the roller replacement counter.
(See.
Scanner Counter (P. 46 ))
5. Double Feed Detector
(Generate) does not work
properly.
1. Perform "Double Feed" test in Sec.
Test (P.4 7) to
check the detector condition.
2. Perform "Double Feed" adjustment in Sec.
Adjust-
ment
(P. 5 0).
3. Check whether the ULTRASONIC SENSOR (G)
Board is attached to the scanner properly.
4. Check the following connection and soldering
condition on each connector.
a. CN13 (CONTROL Board)
to CN2001 on ULTRASONIC SENSOR (G)
Board
5. Check the following parts' soldering condition to
repair it.
a. R464, Q28, Q29, Q30, Q31, L39, L40
6. Check the following signals.
a. +24V_SLP signal (R464 or CL383)
b. CN13-2nd pin: See Fig. 10.2.4.
7. Replace faulty parts or boards.
6. Double Feed Detector
(Receive) does not work
properly.
1. Perform "Double Feed" test in Sec.
Test (P.4 7 ) to
check the detector condition.
2. Perform "Double Feed" adjustment in Sec.Adjust-
ment
(P.50).
3. Check whether the STARTING SENSOR Board is
attached to the scanner properly.
4. Check the following connection and soldering
condition on each connector.
a. CN2301 (STARTING SENSOR Board) to
CN9 (CONTROL Board)
5. Check the following parts' soldering condition to
repair it.
a. CONTROL Board
R415: See Fig. 10.2.5.
b. STARTING SENSOR Board's Circuit
IC2301, and its surrounding circuits
6. Check the following signals.
a. CN9-2rd pin: DC 12 V
7. Replace faulty parts or boards.
U30: Door open 20 00 00 00 1. ADF Door remains open, or
is not closed properly.
Close the door securely.
2.The claw of the cover is
broken and does not
interrupt the Door Sensor.
Replace the cover.
3. The claw position is not
matched to the Door
Detector’s position so that
door open-closed status
cannot be detected.
Adjust each part position so that the claw can
interrupt the Door Detector.
Error Code Possible Cause Check Point
Classified Code ST1 ST2 ST3 ST4