Panasonic KV-S1057C Service Manual page 55

Symptom
8. PANEL Board does not work
properly.
For SL1066, SL1056,
Scanner does not 1. USB cable is not connected
recognize USB normally.
connection.
2. USB interface circuit does not
work.
For S1057C, S1027C
2. USB interface circuit does not
work.
For SL1066, SL1056,
START/STOP 1. Mechanical problem with
Button, ON/OFF switch
Skip Button, or For S1057C, S1027C
Cursor Button
don't work properly.
1. Mechanical problem with
ON/OFF switch
For SL1066, SL1056,
Possible Cause
SL1055, SL1036, SL1035
SL1055, SL1036, SL1035
SL1055, SL1036, SL1035
Check Point
Perform the "LED" test in Sec.
1.
LED ON/OFF status.
2. Check the following connection.
(1) between CN5000(PANEL Board) and CN3
(CONTROL Board)
3. Check the soldering condition of the following parts on
the PANEL Board.
(1) CN5000
(2) IC500
4. Monitor the following signals on the CN4000.
(1) CN5000-3pin:+3.3V
5. Replace faulty parts or PANEL Board.
1. Check the device (USB) condition of PC with Device
Manager.
2. Re-attach the USB cable, and then restart the scanner
and PC.
3. Replace the USB cable
1. Check the soldering condition of the following parts
and of their surrounding circuits on the CONTROL
Board, and then repair it.
(1) JK2 (USB IF connector)
(2) FL2, LF4 (Common mode filter)
(3) IC26 (USB3.0 Device IC)
(4) IC27 (PCI Clock Driver)
2. Replace the CONTROL Board.
1. Check the soldering condition of the following parts
and of their surrounding circuits on the CONTROL
Board, and then repair it.
(1) JK1 (USB IF connector)
(2) FL1 (Common mode filter)
(3) IC4 (CPU)
2. Replace the CONTROL Board.
Perform the "Key / Sensor" test in Sec.
1.
check the button's ON/OFF status.
2. Check the contact between the button cover and
switch
(SW4100 [Start/Stop] on SW PANEL Board)
(SW4101 [Skip] on SW PANEL Board)
(SW4102 [Up] on SW PANEL Board)
(SW4103 [Down] on SW PANEL Board)
(SW4104 [Left] on SW PANEL Board)
(SW4105 [Right] on SW PANEL Board)
(SW4106 [Set] on SW PANEL Board)
3. Check the button's ON/OFF mechanical condition.
4. Re-attach the button cover after checking whether it is
broken.
5. Replace faulty parts.
Perform the "Key / Sensor" test in Sec.
1.
check the button's ON/OFF status.
2. Check the contact between the button cover and
switch
(SW5000 [Start/Stop] on SW PANEL Board)
(SW5001 [Skip] on SW PANEL Board)
(SW5002 [Up] on SW PANEL Board)
(SW5003 [Down] on SW PANEL Board)
3. Check the button's ON/OFF mechanical condition.
4. Re-attach the button cover after checking whether it is
broken.
5. Replace faulty parts.
55
Remarks
( ) to check the
Test P.47
( ) to
Test P.47
( ) to
Test P.47