Sony CyberShot DSC-P72 Service Manual page 70

COVER
COVER
For Schematic Diagram
• Refer to page 4-39 for printed wiring board.
2
1
SY-85 BOARD(7/10)
AUDIO I/O(AU BLOCK)
A
XX MARK:NO MOUNT
:Voltage measurement of the CSP IC
and the Transistors with mark,is
not possible.
B
C
XAU_POWER_SAVE
AU_HGL_SEL
19
(4/10)
D
XAU_LINE_MUTE
XAU_SP_MUTE
E
MIC_IN
31
(10/10)
AU_OUT
F
24 SP-
(5/10)
SP+
16
4-2. SCHEMATIC DIAGRAMS 4-2. SCHEMATIC DIAGRAMS
3 4 5
C158
0.015u
C162
0.01u
R155
XX
D2 J8 H8 J7 H7 J6
C152
4.7u
R151
B 47k
NC(HK)
NC(HN)
STBY
C154 1u B LPF_SEL
AGC_DET
C155
C153 WHPF_OUT
0.015u
0.015u
B
B
WHPF_BIAS
WHPF_IN
C151
R153
XX
GAIN_SET
10k
CSP(CHIP SIZE PACKAGE)IC
MIC_OUT
R152 0
GND
LINE_MUTE
MIC_OFF
MIC_IN
NC
C156
0.1u
A9 C7 B9 A8 B7 A7 B6 A6 B5 A5 B4 A4 A3 B2
C160
C157
C159
1u
1u
10u
B B
4-19
SY-85 BOARD SIDE A SY-85 BOARD SIDE A SY-85 BOARD SIDE B SY-85 BOARD SIDE B
6 7
C166
C170
C161 0.47u
10u
0.01u
B C168
6.3V
0.1u
TA
B
A
B
C167
1u
R156
10k
H6 J5 H5 J4 H4 J3 H3 G3 J1
NC
SPAGC_DET
XAUDIO_MUTE
SP_LPF_0
BEEP_OUT
IC151
BEEP_MIX_IN
AGND
AUDIO AMP
C172
XBEEP_MUTE
C180 0.47u
BEEP
IC151
AN12908A-VB
VREF_SP
SP_OUT-
SP_GND
SP_OUT+
C181 XX
NC(HN)
NC(HK)
C165
1u
B
C164
1u
B B
SIGNAL PATH
AUDIO
SIGNAL
REC
PB
8 9
AU_AOUT
AU_AINL
AU_2.9V
SP_VOL
C173
1u
B
C175
4.7u
B
R157 47k
L163
10uH
C174
C169
0.001u
0.47u
B
B
R158 0
XX
BEEP_ON
B
BEEP
R160
C171 1u B
47k
R161 0
R159
1k
C176 0.047u
R162 0 C179
A_2.9V
L152
10u
A 10uH
10V
0.047u
C177
M_5V
C178
0.1u
B
REG_GND
4-20
DSC-P72
10
13
(3/10)
8
(2/10)
30
(6/10)
32
(9/10)
SY-85 (7/10)