MDR-IF630R
4-1. BLOCK DIAGRAM
— 9 —
— 10 —
SECTION 4
DIAGRAMS
(IR
SENSOR)
D301,
D302
(IR
SENSOR)
D303,
D304
D306
16
NI-MH
1.2Vx2
+B
Q301-Q303
RF AMP
Q304
BUFFER
(POWER)
S10
SW301(1/2)
VOL
SOUND MODE
RV301(1/2)
LPF
MIXER
L203 2.3 MHz B.P.F
L204 2.3MHz DET. COIL
MIXER
IN
16
OSCILLATOR
DEMODULATOR
LIMITER
1
2
MIXER
OUT
AF
OUT
3
LIMITER
IN
5
QUAD COIL
8
9
6
2
7
1
3
5
8
3
SCAN
CONTROL 13
MUTE
14
AF AMP.
IC201
MIXER / LIMITER / DEMODULATOR
-
+
IC202
EXPANDER
IC203
VOICE ENHANCER
IC204
POWER AMP
SP201
SPEAKER
(L-CH)
OUT
Q201
-1
VREF
IN
2
1
G.CELL
LPF
MIXER
L103 2.8MHz B.P.F
L104 2.8MHz DET. COIL
MIXER
IN
16
OSCILLATOR
DEMODULATOR
LIMITER
1
2
MIXER
OUT
AF
OUT
3
LIMITER
IN
5
QUAD COIL
8
9
6
2
7
1
3
5
8
3
SCAN
CONTROL 13
MUTE
14
AF AMP.
IC101
MIXER / LIMITER / DEMODULATOR
-
+
IC301(2/2)
AMP.
IC102
EXPANDER
IC103
VOICE ENHANCER
IC104
POWER AMP
SP101
SPEAKER
(R-CH)
OUT
Q101
-1
VREF
IN
6
7
G.CELL
Signal path.
: RF
: ANALOG
TO
TMR-IF630R
(BATTERY CHARGER)
f
f
f
f
f
f
SW301(2/2) RV301(2/2)
VOICE
NORMAL
+
–
+
–
IC301(1/2)
AMP.
