TMR-RF975R
5
5
4-1. BLOCK DIAGRAMS
J401
S401
NOISE FILTER
NOISE
FILTER
BUFFER
Q401
RECT
D404,405
CHANNEL
SET
Q408
2V
D408
INPUT
DET
AUDIO IN
B
J402
A
OFF
|
ON
S402
CHANNEL
L
R
R-CH
R-CH
R-CH
X401
38kHz
RV402
RV401
L407
RV403
MOD IN
IC401
IC601
(L-CH)
IC602
(R-CH)
Q403
LPF
IC403
STEREO MPX
Q402,405
SWITCH
Q404
POWER
ON/OFF
Q406,407
SWITCH
Q601
SWITCH
Q602
SWITCH
Q604
SWITCH
Q603
REF V
IC604(2/2)
IC402
IC605
IC603
IC604(1/2)
ANT
5V
ANT401
D401
D402
CHARGE
TERMINAL
(TO MDR-RF975R)
power
chg
1
2
3
VCO401
(VCO UNIT)
MODULATION
MODULATION
MODU-
LATION
MODULATION
MODULATION
CHG-NR BOARD
TX-BASE BOARD
(1/2)
CHG-NR BOARD (2/2)
I
O
V
B+
5V
D407
+
–
J404
DC IN 9V
• R-ch is omitted due to same as L-ch.
• Signal path.
L
: AUDIO
F
: FM
SECTION 4
DIAGRAMS
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299