Panasonic KV-S1027C, Service Manual

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8. Conveyor Motor's control
circuit does not work
properly. 1. Perform the "Conveyor Motor" test or "Feed" test
in Sec.
Test
(
P.47
) to check the motor rotation.
2. Check the soldering condition of IC19,
CN8, R338, R339, R340, R341 and of their
surrounding circuits on the CONTROL Board
to repair it.
3. Monitor the following signals on the CONTROL
Board.
(1) IC19- 1, 19, and 24th
: DC-voltage is near 24 V.
(2) CN8- 1, 2, 3, and 4th pins, IC19-1, 22, 18, and
21st pins
: See Fig. 10.2.3.
4. Check the soldering condition of the following parts
and of their surrounding circuits on the CONTROL
Board.
(1) Q39 (C-E) : Typ.0 V
(2) Q40 (C-E) : 2.0 V - 2.8 V
5. Replace faulty parts or CONTROL Board.
U11: Document
did not reach to
the Starting
Sensor position.
(Document
remains
between the
Starting Sensor
and Paper
Sensor.)
or Double Feed
occurred around
paper feed
section. 11 00 00 00 9. The scanned document
doesn’t match the
specifications of this
scanner. (Document doesn’t
match specifications for size,
thickness, and/or weight) 1. Set document in accordance with the specifications
of this scanner.
10. CIS (B) is not installed
properly.
1. Re-attach the CIS (B). (See.
Upper Chassis
(
P.28
)
2. Perform the "Feed" test in Sec.
Test
(
P.47
)
U12: Conveyor
Jam (Paper
jammed around
the Starting
Sensor.) 12 00 00 00 1. Length of the document is
out of specifications. 1. Only place documents that follow this scanner
specifications on the Feed Tray.
2. Rollers (Paper Feed,
Double Feed Prevention) are
dirty. 1. Clean the Rollers.
2. After cleaning the Paper Feed Roller and
Double Feed Prevention Roller, perform the
"Clear
Counter (After Clean Roller)" in the service utility
to clear the cleaning roller counter.
(See
Scanner Counter
(
P.46
))
3. 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
))
4. CIS (B) is not installed prop-
erly.
1. Re-attach the CIS (B). (See.
Upper Chassis
(
P.28
))
2. Perform the "Feed" test in Sec.
Test
(
P.47
)
Error Code Possible Cause Check Point
Classified Code ST1 ST2 ST3 ST4