Tmr-Rf90 - Sony SRS-RF90RK Service Manual

SRS-RF90R/RF90RK/TMR-RF90

(TMR-RF90)

R-CH
J401
B
AUDIO IN J402
L
A
NOISE
FILTER
R R-CH
S401
NOISE FILTER
OFF
ON
• R-ch is omitted due to same as L-ch.
• Signal path.
L
: AUDIO
F
: FM
IC403
STEREO MPX
IC401
ALC
CH2
13 1 LPF 14 BUFFER
AMP
AMP
TIME
DIVISION
MPX
CH1
R-CH
1
AMP
BUFFER
OSC
DIVIDER
AMP
6 7
X401
38kHz
R-CH
RV403
MODULATION
(STEREO COMPOSITE SIGNAL)
9 MOD IN ANT
I
(VCO UNIT)
8
B+
5V
5V
Q408
B+
CHANNEL
5V
SET
1
S402
2 CHANNEL
3
Q402,405
Q401 D404,405 INPUT
BUFFER RECT DET
14 14
ANT401
IC402
Q404
+5V
1 3 B+
REG
SWITCH
Q406
D401
POWER
POWER
ON/OFF
DC IN 9V