Read Sony DSC-U20 (serv.man2) Service Manual online
DSC-U20
COVER
COVER
For Schematic Diagram
• Refer to page 4-37 for printed wiring board.
• Refer to page 4-57 for waveform.
• Refer to page 4-37 for printed wiring board.
• Refer to page 4-57 for waveform.
4-7
4-8
CD-425 (1/2)
Precautions for Replacement of CCD Imager
• The CD-425 flexible board mounted as a repair part is not
equipped with a CCD imager.
When replacing this board, remove the CCD imager from the
old one and mount it onto the new one.
When replacing this board, remove the CCD imager from the
old one and mount it onto the new one.
• If the CCD imager has been replaced, carry out all the
adjustments for the camera section.
• As the CCD imager may be damaged by static electricity from
its structure, handle it carefully like for the MOS IC.
In addition, ensure that the receiver is not covered with dusts
nor exposed to strong light.
In addition, ensure that the receiver is not covered with dusts
nor exposed to strong light.
4-2. SCHEMATIC DIAGRAMS
CD-425 FLEXIBLE BOARD
4-2. SCHEMATIC DIAGRAMS
CD-425 FLEXIBLE BOARD
1
NO MARK:REC/PB MODE
R:REC MODE
P:PB MODE
R:REC MODE
P:PB MODE
R11.1/P0
Note:The voltage and
waveform of IC302
cannot be measured,
because it is mounted
by the side of lens.
cannot be measured,
because it is mounted
by the side of lens.
R15.1/P0
R11.8/P0
(2/2)
1
IC302
2200p
C307
L301
100uH
C312
CH
XX
35V
1.5u
C302
2SC4250(T5LSONY1)
Q302
25V
0.22u
C301
0
R304
0.01u
C313
100k
R301
0
R306
MA111-(K8).S0
D301
5.6k
R308
25V
0.22u
C305
R302 0
16V
0.1u
C310
FB301
0
R303
C309
16V
0.1u
16V
0.1u
C306
CCD_OUT
CAM_15V
GND
TEST
H1
RG
H2
V3B
V3A
V2B
V2A
V4
V1
VSHT
GND
CAM_-7.5V
GND
GND
C314
10u
35V
1.5u
C315
C303
10u
IC302
ICX454JQF-13
1
V4
2
V3A
3
V3B
4
V3C
5
VHOLD
6
V2A
7
V2B
8
V2C
9
V1
10
VOUT
11
VDD
12
RG
13
GND
14
GND
15
VL
16
H1
17
H2
18
φ
SUB
V3C
V2C
R311
0
R307
3.9k
R309
XX
R310
XX
1
A
HS601
CCD IMAGER
VIDEO
SIGNAL
Y/CHROMA
SIGNAL PATH
REC
BUFFER
7
F
5
6
D
8
C
E
H
9
CD-425 FLEXIBLE BOARD (1/2)
CCD IMAGER(CCD1 BLOCK)
XX MARK:NO MOUNT
4
B
3
2
G
05
CH
C311
XX
Q303
XX
Q304
XX
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