KV-N1058X, KV-N1028X, KV-N1058Y, KV-N1028Y - Panasonic Other Service Manuals Service Manual (repair manual). Page 65

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65
4. Problem with Pixel data from 
CIS (F) or from image 
processing circuit.
*KV-N1028Y/X: CN2
**KV-N1028Y/X : IC2
1. Check the connection and soldering condition of 
the following parts.
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 (PF4)
(2) IC1** (AFE)
(3) IC4 (D/A Conv.)
3. Monitor the following CIS Timing signals on the 
CN1*.
(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
51
00
00
00 1. Problem with Pixel data from 
CIS (F) or from image 
processing circuit.
Refer to F60 - 4.
F62: Back-side 
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-N1028Y/X : 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)
4. Check the power supply for LED.
(1) CN3*-4th pin, F1: 7.0 V
(2) L8, L9, L10, Q9, Q10, Q12
5. Replace faulty parts or boards. 
3. Background Plate (B) 
switching is not working 
properly.
1. Execute "Focus" test in Sec. 
10.3.8.
 to check the 
peak level when Background Color is White and 
Black.
4. Problem with Pixel data from 
CIS (B) or from image 
processing circuit.
*KV-N1028Y/X : CN4
1. Check the connection and soldering condition of 
the following parts.
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 (PF4)
(2) IC2 (AFE)
(3) IC4 (D/A Conv.)
3. Monitor the following CIS Timing signals on the 
CN3*.
(1) BCLK (CN3*-5th pin)  : Se
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 
53
00
00
00 1. Problem with Pixel data from 
CIS (B) or from image
processing circuit.
Refer to F62 - 4.
F80: Double
Feed Detector
error
60
00
00
00 1. Double Feed Detector
(Generate) does not work
properly.
Refer to U23 - 5.
2. Double Feed Detector
(Receive) does not work
properly.
Refer to U23 - 6.
F82: DAC 
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
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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