Read Sony SRS-RF90R / SRS-RF90RK / TMR-RF90 Service Manual online
14
14
SRS-RF90R/RF90RK/TMR-RF90
(TMR-RF90)
• R-ch is omitted due to same as L-ch.
• Signal path.
• Signal path.
L
: AUDIO
F
: FM
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
R-CH
R-CH
R-CH
R-CH
14
9
8
7
6
CH1
AMP
1
X401
38kHz
RV403
LPF
IC403
STEREO MPX
+5V
REG
Q404
B+
SWITCH
IC402
ANT401
D401
POWER
AUDIO IN
B
A
MOD IN
ANT
5V
B+
5V
5V
(VCO UNIT)
I
MODULATION
Q408
CHANNEL
SET
S402
CHANNEL
1
2
B+
5V
5V
3
Q402,405
J404
DC IN 9V
Q406
POWER
ON/OFF
13
1
1
3
IC401
ON
(STEREO COMPOSITE SIGNAL)
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