Block Diagram - Audio Section - Sony MV-900SDS Service Manual

MV-900SDS
6-2. BLOCK DIAGRAM – AUDIO Section –
J701 (1/2)
DIFFERENTIAL
L AMP
AUDIO
IC703
INPUT
R-CH
R
L-CH_AU
B
(Page 19)
SW1
D
(Page 21)
DA-BE, CK-BE,
CS-BE
C
(Page 19)
15 16 17 18
MV-900SDS
RV900
VCO
IR TRANSMITTER
MODULATOR
IC904
AUDIO INPUT
SELECT
IC704
ELECTRICAL VOLUME
IC706
1 VIN1
VOUT 7 8 LIN1 LOUT1 7
3 VIN2
4 5
2
R-CH
Q202, 204
RF LEVEL
SWITCHING
22 LIN
R-CH 1 RIN
Q204 Q202
R-CH R-CH
BUFFER BUFFER
Q206 Q205
Q207
B+ SWITCH
B+8V
Q323, 324
D317
7 6 49 50
SYSTEM CONTROLLER
IC401 (1/3)
LED DRIVE D912, 914, 916
Q902 (IR TRANSMITTER)
D911, 913, 915
R-CH
(IR TRANSMITTER)
LINE AMP
IC708
MUTING
POWER ON Q713
MUTING
Q321, 322
R-CH
B+8V
MUTING
Q708
R-CH
MUTING MUTING
SWITCH CONTROL
Q318 Q316, 317
POWER ON
MUTING
Q319, 320
MPX ADJ 5 9 VTIN RF OUT 11
LOW-PASS FILTER
7 PD
Q208, 209
FM STEREO
MODULATOR
IC201
14 13 17 16 15 18
X201
LEVEL SHIFT
7.6MHz
Q210 – 213
FM+5V
+5V
REGULATOR
IC304
4 3 5
20 20
J702 (1/2)
L
AUDIO
DISCHARGE SWITCH
OUTPUT
R-CH
Q714, 715 R
+
POWER AMP
SP1
IC707
(L)
R-CH
SP2
STANDBY
(R)
SWITCH
Q710, 711
POWER ON
E
(Page 22)
BPF
(FM MODULATOR)
FL201
D204
53 64
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: DVD (AUDIO)
: AUX INPUT (AUDIO)