Read Sony MV-900SDS / XVM-R90D Service Manual online
XVM-R90D
18
18
XVM-R90D
6-2. BLOCK DIAGRAM – AUDIO Section –
(Page 17)
(Page 20)
(Page 17)
• SIGNAL PATH
: DVD (AUDIO)
: AUX INPUT (AUDIO)
• R-ch is omitted due to same as L-ch.
IR TRANSMITTER
MODULATOR
IC904
AUDIO INPUT
SELECT
IC704
BPF
FL201
MUTING
Q708
LOW-PASS FILTER
Q208, 209
BUFFER
Q205
BUFFER
Q206
LEVEL SHIFT
Q210 – 213
STANDBY
SWITCH
Q710, 711
DISCHARGE SWITCH
Q714, 715
MUTING
SWITCH
SWITCH
Q318
MUTING
CONTROL
Q316, 317
DIFFERENTIAL
AMP
IC703
R-CH
J701 (1/2)
R
AUDIO
INPUT
L
R-CH
R-CH
FM+5V
R-CH
D317
D204
Q204
Q207
Q202
Q202, 204
RF LEVEL
SWITCHING
J702 (1/2)
R
POWER ON
L
FM STEREO
MODULATOR
IC201
R-CH
5
MPX ADJ
11
RF OUT
17
DATA
16
CLK
15
CE
18
ATT
9 VTIN
7 PD
22 LIN
64
AMP ON
15
DA (IN)-BE
49
FM1
50
FM2
4
FM-DATA
3
FM-CLK
7
S-SDA
6
S-SCL
5
FM-CE
POWER ON
MUTING
Q319, 320
16
DA (OUT)-BE
17
CK-BE
18
CS-BE
DA-BE
CK-BE
CS-BE
1 RIN
POWER AMP
IC707
LED DRIVE
Q902
LINE AMP
IC708
MUTING
Q713
XOUT
XIN
14
13
X201
7.6MHz
SYSTEM CONTROLLER
IC401 (1/3)
R-CH
SP1
(L)
SP2
(R)
R-CH
R-CH
(FM MODULATOR)
B+8V
POWER ON
MUTING
Q321, 322
53
AMUTE
E
AUDIO
OUTPUT
R-CH
L-CH_AU
B
DA-BE, CK-BE,
CS-BE
CS-BE
C
SW1
D
RV900
VCO
8
5
7
ELECTRICAL VOLUME
IC706
D912, 914, 916
(IR TRANSMITTER)
LIN1
CLK
4
DATA
CLK
DATA
CLK
DATA
LOUT1
1
7
VIN1
3 VIN2
2
SW1
VOUT
D911, 913, 915
(IR TRANSMITTER)
R-CH
B+8V
+5V
REGULATOR
IC304
B+ SWITCH
Q323, 324
+
(Page 19)
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