Panasonic KV-S1058Y / KV-S1028Y / KV-S1057C-M2 / KV-S1057C-J2 / KV-S1027C-M2 / KV-S1027C-J2 Service Manual ▷ View online
65
8. Conveyor Motor's control
circuit does not work
properly.
properly.
1. Perform the "Conveyor Motor" test or "Feed" test
in Sec.
10.3.8.
to check the motor rotation.
2. Check the soldering condition of IC20, CN12,
R475, R476, R477, R478 and of their surrounding
circuits on the CONTROL Board to repair it.
circuits on the CONTROL Board to repair it.
3. Monitor the following signals on the CONTROL
Board.
(1) IC20-19, and 24th
(1) IC20-19, and 24th
: DC-voltage is near 24 V.
(2) CN12-1, 2, 3, and 4th pins, IC20-1, 22, 18, and
21st pins. (See
Fig.11.2.3.
)
4. Check the soldering condition of the following parts
and of their surrounding circuits on the CONTROL
Board.
Q26 (C-E) : 2.0 V - 2.8 V
Board.
Q26 (C-E) : 2.0 V - 2.8 V
5. Replace faulty parts or CONTROL Board.
9. The scanned document
doesn’t match the
specifications of this
scanner.
specifications of this
scanner.
1. Set document in accordance with the specifications
of this scanner. (size, thickness, weight)
10. CIS (B) is not installed
properly.
1. Re-attach the CIS (B). See. Sec.
8.3.5.
U12: Conveyor
Jam
(The turning off
timing of the
Starting sensor
is too early)
Jam
(The turning off
timing of the
Starting sensor
is too early)
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. Starting Sensor does not
work correctly.
Refer to U11 - 6.
U12: Conveyor
Jam
(Short interval
between
documents.)
Jam
(Short interval
between
documents.)
12
01
00
00 1. Document length is longer
than the paper length set on
the PC.
the PC.
1. Set the parameter of the paper length on the PC,
correctly.
2. Paper Feed Roller or DFP
Roller is not assembled
correctly.
correctly.
Refer to U11 - 2.
3. Rollers (Paper Feed, DFP)
are dirty.
Refer to U11 - 1.
4. Rollers have reached their
life expectancy.
Refer to U11 - 3.
U16: The trailing
edge of the
document did
not exit from the
Starting Sensor,
throughout.
edge of the
document did
not exit from the
Starting Sensor,
throughout.
16
00
00
00 1. Conveyor Roller, Exit Roller,
or Free Roller is dirty.
1. Clean the roller with Roller Cleaning Paper and
Cleaning Mode. (See Sec.
10.3.7.
)
2. Conveyor Roller, Exit Roller,
or mechanical parts
(Conveyor, Belt) related to
conveying document are not
installed properly.
(Conveyor, Belt) related to
conveying document are not
installed properly.
1. Check and reassemble the parts.
2. Perform the "Feed" test to check paper feed
2. Perform the "Feed" test to check paper feed
mechanism.
3. Conveyor Roller or Exit
Roller is worn out.
1. Replace the Conveyor Roller or Exit Roller after
checking each roller configuration.
4. Paper dust exists on or
around the Starting Sensor.
Refer to U11 - 5.
5. Starting Sensor does not
work correctly.
Refer to U11 - 6.
6. Scanned document is out of
specifications regarding the
length. (Refer to paper
specifications.)
length. (Refer to paper
specifications.)
1. Set documents according to the specifications for
this scanner.
U18: Document
remains in the
scanner.
remains in the
scanner.
18
20
00
00 1. Document remains in the
scanner.
1. Open the ADF Door and remove the document
from the scanner.
2. Paper dust exists on or
around the Starting Sensor.
Refer to U11 - 5
3. Starting Sensor does not
work correctly.
Refer to U11 - 6.
Error Code
ST1 ST2 ST3 ST4
Possible Cause
Recommended action
66
U23: Double
Feed error
Feed error
1C
00
03
00 1. Thickness of the document
is out of specifications.
1. Only place documents that follow this scanner
specifications on the Feed Tray.
2. Paper Feed Roller or DFP
Roller is not assembled
correctly.
correctly.
Refer to U11 - 2.
3. Rollers (Paper Feed, DFP)
are dirty.
Refer to U11 - 1.
4. Rollers have reached their
life expectancy.
Refer to U11 - 3.
5. Double Feed Detector
(Generate) does not work
properly.
properly.
1. Perform "Double Feed" test in Sec.
10.3.8.
to
check the detector condition.
2. Perform "Double Feed" adjustment in Sec.
10.3.9.
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.
CN15 (CONTROL Board) to CN2001 on
ULTRASONIC SENSOR(G) Board
CN15 (CONTROL Board) to CN2001 on
ULTRASONIC SENSOR(G) Board
5. Check the following parts' soldering condition to
repair it.
R487, Q27, Q28, Q30, Q32, Q33, Q35, Q36, Q37,
Q38, L58, L59
R487, Q27, Q28, Q30, Q32, Q33, Q35, Q36, Q37,
Q38, L58, L59
6. Check the following signals.
a. +24V_SLP signal (R487 or CL160): 24V DC
b. CN15-2nd pin: See
b. CN15-2nd pin: See
Fig.11.2.4.
7. Replace faulty parts or boards.
6. Double Feed Detector
(Receive) does not work
properly.
properly.
1. Perform "Double Feed" test in Sec.
10.3.8.
to
check the detector condition.
2. Perform "Double Feed" adjustment in Sec.
10.3.9.
3. Check whether the STARTING SENSOR Board is
attached to the scanner properly.
4. Check the following connection and soldering
condition on each connector.
CN2301 (STARTING SENSOR Board) to
CN14 (CONTROL Board)
CN2301 (STARTING SENSOR Board) to
CN14 (CONTROL Board)
5. Check the following parts' soldering condition to
repair it.
a. CONTROL Board
R496 : See
a. CONTROL Board
R496 : See
Fig.11.2.5.
b. STARTING SENSOR Board's Circuit
IC2301, and its surrounding circuits
IC2301, and its surrounding circuits
6. Check the following signals.
CN14-2nd pin : DC 12 V
7. Replace faulty parts or boards.
Error Code
ST1 ST2 ST3 ST4
Possible Cause
Recommended action
67
U30: Door open
20
00
00
00 1. ADF Door remains open, or
is not closed properly.
1. Close the door securely.
2. The claw of the Upper
Chassis is broken and does
not interrupt the Door
Sensor.
not interrupt the Door
Sensor.
1. Replace the Upper Chassis.
3. The claw position is not
matched to the Door
Detector’s position.
Detector’s position.
1. Adjust each part position so that the claw can
interrupt the Door Detector.
4. The Door Detector or its
monitor circuit does not
work correctly.
work correctly.
1. Perform the "Key / Sensor" test in Sec.
10.3.8.
to check the sensor condition, while repeatedly
closing and opening the door.
closing and opening the door.
2. Check the following connection and soldering
condition on each connector.
CN2101 (DOOR DETECTION Board) to
CN16 (CONTROL Board)
CN2101 (DOOR DETECTION Board) to
CN16 (CONTROL Board)
3. Check the following soldering condition.
(1) DOOR DETECTION Board
CN2101 and its surrounding circuits
(2) CONTROL Board
Q40, R543, R544, R550, R555
4. Replace faulty parts or boards.
F17: SDRAM
Error
Error
89
01
XX
00 1. Access error to SDRAM
(IC18) on the CONTROL
Board
Board
1. Check the soldering condition of the following parts
on the CONTROL Board.
R385 to R406, R411 to R414, R596, R645, IC18
R385 to R406, R411 to R414, R596, R645, IC18
2. Replace faulty parts or board.
F30: Fan error
94
00
00
00 1. Drive circuit does not work
properly.
1. Check the connection between FAN and CN22
(CONTROL Board).
2. Check the fan power supply circuit (CONTROL
Board), or replace the CONTROL Board.
3. Replace the FAN.
1. Mechanical problem blocks
FAN rotation.
1. Remove obstacles that blocks the FAN rotation.
2. Replace the FAN.
2. Replace the FAN.
F31: Analogue
IC Error (AFE)
IC Error (AFE)
95
XX
00
00 1. Access error to Analogue
ICs(IC1, IC2) on the
CONTROL Board
CONTROL Board
1. Check the soldering condition of the following parts
and of their surrounding circuits on the CONTROL
Board.
Analogue IC (IC1, IC2)
Board.
Analogue IC (IC1, IC2)
2. Replace faulty parts or board.
F36: ASIC
SDRAM Error
SDRAM Error
9A
XX
00
00 1. Access error to SDRAM
(IC18)
1. Check the soldering condition of the parts
surrounding the IC9 (PF4).
2. Check the soldering condition of the SDRAM
(IC18).
3. Replace faulty parts or CONTROL Board.
F60: Front-side
gain adjustment
error
gain adjustment
error
50
00
00
00 1. The surface of Scanning
Glass (F) is dirty.
1. Clean the surface with a soft and dry cloth.
2. CIS (F) Unit does not work
properly.
*KV-S1028Y/S1027C : CN2
1. Execute "Focus" test in Sec.
10.3.8.
to check the
waveform of CIS output.
2. Execute "CIS LED" test in Sec.
10.3.8.
to check the
lighting of each RGB.
3. Check the following connections and soldering
condition on each connector.
CIS (F) Unit to CN1*(CONTROL Board)
CIS (F) Unit to CN1*(CONTROL Board)
4. Check the power supply for LED.
(1) CN1*-4th pin, F1: 7.0 V
(2) L1, L2, L3, Q3, Q4, Q6
(2) L1, L2, L3, Q3, Q4, Q6
5. Replace faulty parts or boards.
3. Background Plate (F)
switching is not working
properly.
properly.
1. Execute "Focus" test in Sec.
10.3.8.
to check the
peak level when Background Color is White and
Black.
Black.
Error Code
ST1 ST2 ST3 ST4
Possible Cause
Recommended action
68
4. Problem with Pixel data from
CIS (F) or from image
processing circuit.
processing circuit.
*KV-S1028Y/S1027C : CN2
**KV-S1028Y/S1027C : IC2
**KV-S1028Y/S1027C : IC2
1. Check the connection and soldering condition of
the following parts.
Between CIS (F) and CN1*(CONTROL Board)
Between CIS (F) and CN1*(CONTROL Board)
2. Check the soldering condition of the following parts
and of their surrounding circuits on the CONTROL
Board.
(1) IC9 (FP4)
(2) IC1** (AFE)
(3) IC4 (D/A Conv.)
Board.
(1) IC9 (FP4)
(2) IC1** (AFE)
(3) IC4 (D/A Conv.)
3. Monitor the following CIS Timing signals on the
CN1*.
(1) FCLK (CN1*-5th pin) : See
(1) FCLK (CN1*-5th pin) : See
Fig.11.2.1.
(2) FSP (CN1*-7th pin) : See
Fig.11.2.2.
4. Replace faulty parts or boards.
F61: Front-side
black level error
black level error
51
00
00
00 1. Problem with Pixel data from
CIS (F) or from image
processing circuit.
processing circuit.
Refer to F60 - 4.
F62: Back-side
gain adjustment
error
gain adjustment
error
52
00
00
00 1. The surface of Scanning
Glass (B) is dirty.
1. Clean the surface with a soft and dry cloth.
2. CIS (B) Unit does not work
properly.
*KV-S1028Y/S1027C : CN4
1. Execute "Focus" test in Sec.
10.3.8.
to check the
waveform of CIS output.
2. Execute "CIS LED" test in Sec.
10.3.8.
to check the
lighting of each RGB.
3. Check the following connections and soldering
condition on each connector.
CIS (B) Unit to CN3* (CONTROL Board)
CIS (B) Unit to CN3* (CONTROL Board)
4. Check the power supply for LED.
(1) CN3*-4th pin, F1: 7.0 V
(2) L8, L9, L10, Q9, Q10, Q12
(2) L8, L9, L10, Q9, Q10, Q12
5. Replace faulty parts or boards.
3. Background Plate (B)
switching is not working
properly.
properly.
1. Execute "Focus" test in Sec.
10.3.8.
to check the
peak level when Background Color is White and
Black.
Black.
4. Problem with Pixel data from
CIS (B) or from image
processing circuit.
processing circuit.
*KV-S1028Y/S1027C : CN4
1. Check the connection and soldering condition of
the following parts.
Between CIS (B) and CN3* (CONTROL Board)
Between CIS (B) and CN3* (CONTROL Board)
2. Check the soldering condition of the following parts
and of their surrounding circuits on the CONTROL
Board.
(1) IC9 (FP4)
(2) IC2 (AFE)
(3) IC4 (D/A Conv.)
Board.
(1) IC9 (FP4)
(2) IC2 (AFE)
(3) IC4 (D/A Conv.)
3. Monitor the following CIS Timing signals on the
CN3*.
(1) BCLK (CN3*-5th pin) : See
(1) BCLK (CN3*-5th pin) : See
Fig.11.2.1.
(2) BSP (CN3*-7th pin) : See
Fig.11.2.2.
4. Replace faulty parts or boards.
F63: Back-side
black level error
black level error
53
00
00
00 1. Problem with Pixel data from
CIS (B) or from image
processing circuit.
processing circuit.
Refer to F62 - 4.
F80: Double
Feed Detector
error
Feed Detector
error
60
00
00
00 1. Double Feed Detector
(Generate) does not work
properly.
properly.
Refer to U23 - 5.
2. Double Feed Detector
(Receive) does not work
properly.
properly.
Refer to U23 - 6.
F82: DAC
control status
error
control status
error
63
00
00
00 1. No reply from DAC IC.
1. Check the soldering condition of CONTROL Board
and its surrounding parts of IC4.
2. Replace faulty parts or boards.
F90: Sub-
processor error
processor error
9E
XX
XX
XX 1. Sub-processor error of
ASIC.
1. Check the soldering condition of CONTROL Board
and its surrounding parts of IC9.
2. Replace faulty parts or boards.
Error Code
ST1 ST2 ST3 ST4
Possible Cause
Recommended action
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