Read Sony SRS-RF930RK Service Manual online
10
10
SRS-RF930RK
SRS-RF930RK
3-2. BLOCK DIAGRAM – TRANSMITTER ASSY –
• Signal path.
• R-ch is omitted due to same as L-ch.
: FM
: AUDIO
J401
S401
NOISE FILTER
NOISE
FILTER
ALC
AMP
CH2
AMP
BUFFER
Q401
BUFFER
D404,405
RECT
INPUT
DET
DIVIDER
BUFFER
OSC
AMP
TIME
DIVISION
MPX
J402
OFF
(L)
(R)
(GND)
R-CH
R-CH
R-CH
R-CH
14
9
8
10
7
6
CH1
AMP
1
X401
38kHz
X501
1080MHz
RV403
Q501-Q503
LPF
IC403
STEREO MPX
+5V
REG
Q404
B+
SWITCH
IC402
ANT401
D401
POWER
CHARGE
AUDIO IN
B
A
MOD IN
ANT
5V
B+
5V
5V
(VCO UNIT)
I
MODULATION
Q408
CHANNEL
SET
S402
CHANNEL
1
2
3
Q402,405
J601
DC IN 9V
Q406
POWER
ON/OFF
Q602
CONSTANT
VOLTAGE
Q601
SW
Q604
SW
Q603
SW
13
1
1
3
IC401
ON
(STEREO COMPOSITE SIGNAL)
DUAL
COMPARATOR
1
3
IC601
SWITCHING
2
10
IC602
D602
CHARGE
Q18
4
OUT2
RESET
CT501
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