Diagrams; Block Diagrams - Sony TMR-RF915R Servise Manual

Q Q
3 7 6 3 1 5 1 5 0

4-1. BLOCK DIAGRAMS

TX-BASE BOARD
R-CH
J401
B
AUDIO IN J402
L
A
NOISE
FILTER
R R-CH
S401
NOISE FILTER
OFF
|
ON
T E
L 1 3 9 4 2 2 9 6 5 1 3
• R-ch is omitted due to same as L-ch.
• Signal path.
L
: AUDIO
F
: FM
w w w
.
SECTION 4

DIAGRAMS

IC403
STEREO MPX
IC401
ALC CH1
LPF
1
AMP AMP
TIME
DEVISION
MPX
CH2
R-CH
14
AMP
BUFFER
OSC
AMP
6 7
X401
38kHz
x a o
y
i
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8
RV403
MODULATION
BUFFER 9 I MOD IN
DIVIDER
8
CHANNEL
B+
SET
5V
Q408
1
S402
2 CHANNEL
3
Q Q
3 7 6 3
Q402,405
BUFFER RECT INPUT
Q401 D404,405 DET
u 1 6 3
.
5 5
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2 4
9 9
ANT401
ANT O
VCO401
(VCO UNIT)
B+ IC402
5V
+5V
SWITCH
5V V
REG
Q404
POWER
ON/OFF
D401
Q406,407
POWER
1 5 1 5 0 8 9 2 4
m
c o
TMR-RF915R/RF945R
2
8 9 9
DC IN 9V
D402
CHG
+
CHARGE
–
TERMINAL
(TO MDR-RF915R/RF945R)
9 8 2 9 9