Panasonic KV-S1057C Service Manual page 57

Symptom
Scanned image data 1. Shading data stored in
have black lines, CONTROL board is not proper
white lines, or darker to perform an image process.
image than the
original)
2. The dust exists on the Scanning
Glass ((F) or (B)) or its
surrounding (Reference area or
others).
3. Problem with Pixel data from
CIS (F) or from image
processing circuit
For S1057C, SL1066
3. Problem with Pixel data from
CIS (F) or from image
processing circuit
For S1027C, SL1056, SL1055
4. Problem with Pixel data from
CIS (B) or from the image
processing circuit
For S1057C, SL1066
4. Problem with Pixel data from
CIS (B) or from the image
processing circuit
For S1027C, SL1056, SL1055
When you scan If the length of a document is less
short documents, than about 148 mm, feeding speed
the sound made by control will be activated for exiting
paper being ejected documents; this is normal behav-
will be higher than. ior.
Possible Cause
SL1036, SL1035
SL1036, SL1035
Check Point
Perform the "Shading" in Sec.
1.
over-write new data.
1. Wipe off the dust with soft and dry cloth.
1. Check the connection and soldering condition of the
following parts.
(1) between CIS (F) and CN1 (CONTROL Board)
2. Check the soldering condition of the following parts
and their surrounding circuits on the CONTROL
Board.
(1) IC2 (AFE)
(2) R23, R645, R643, R641, R27, R28
3. Monitor the following CIS Timing signals on the CN1.
(1) CLK: See Fig. 10.1.1.
(2) SI : See Fig. 10.1.2.
4. Replace faulty parts or boards.
1. Check the connection and soldering condition of the
following parts.
(1) between CIS (F) and CN1 (CONTROL Board)
2. Check the soldering condition of the following parts
and their surrounding circuits on the CONTROL
Board.
(1) IC2 (AFE)
(2) R23, R27, R28
3. Monitor the following CIS Timing signals on the CN1.
(1) CLK: See Fig. 10.1.1.
(2) SI : See Fig. 10.1.2.
4. Replace faulty parts or boards.
1. Check the connection and soldering condition of the
following parts.
(1) between CIS (B) and CN2 (CONTROL Board)
2. Check the soldering condition of the following parts
and their surrounding circuits on the CONTROL
Board.
(1) IC3 (AFE)
(2) R24, R25, R26, R647, R649, R651
3. Monitor the following CIS Timing signals on the CN2.
(1) CLK : See Fig. 10.1.1.
(2) SI : See Fig. 10.1.2.
4. Replace faulty parts or boards.
1. Check the connection and soldering condition of the
following parts.
(1) between CIS (B) and CN2 (CONTROL Board)
2. Check the soldering condition of the following parts
and their surrounding circuits on the CONTROL
Board.
(1) IC3 (AFE)
(2) R24, R25, R26
3. Monitor the following CIS Timing signals on the CN2.
(1) CLK : See Fig. 10.1.1.
(2) SI : See Fig. 10.1.2.
4. Replace faulty parts or boards.
This is normal operation.
57
Remarks
( ) to
Adjustment P.50