Block Diagram - Receiver Section - Sony MDR-IF540R Service Manual

4-2. BLOCK DIAGRAM — RECEIVER SECTION —
+1.5V
D1
L-CH FRONT Q1,2 Q3
1 L
SECTION RF AMP BUFFER
D2
L-CH REAR
SECTION
D3
24 R
R-CH REAR
SECTION
D4
R-CH FRONT
SECTION
D1-4
IR
RECEIVER
Q101,102
AUTO ON/OFF
IC101
BATTERY
DOWN
S101
DET
(BATT DET)
D101
2 1
SW103
CHARGE S102
(AUTO ON/OFF)
TERMINAL (BATT DET)
RECHARGEABLE
BATTERY
(BP-HP550)
1.2V 550mAh
X2
L5
(2.3MHz DET)
TUNING
FL1
2.3MHz
1.5V
IC1
BPF
MIXER/LIMITER/
DEMODULATION
3 5 10 6
VCC
DET 11
DET 12
HPF
VREF
22 20 13 14 15 16 17 7 8 18
FL2
2.8MHz
RV1
BPF
MUTE ON
POSITION
L6
(2.8MHz DET)
TUNING
+2.4V
IC201
5 +1.5V
4 +1.5V
REG
1
IC303 (1/2)
ADD AMP
L101 D102
6 7
+3.3V
1 2
IC102
+3.3V
SWITCHING REG
17
IC2
SRS SURROUND PROCESSOR
BYPASS
LOUT
LIN
7
1
SRS
WOUT
2
EXT
WIN
3
FILTER
RIN SRS
16 ROUT
10
VREF BYPASS
15
MODE
REFIN
CONTROL
14
V+/2
13 BIAS
MODE +V
4 9
+3.3V
+3.3V
S1
( )
OFF ON
RV301
IC303 (2/2) IC302 (1/4) IC302 (3/4)
VIBRATION
LPF BUFFER COMMUTATION
(VOL)
D302
3 1 3 1 10 8
IC302 (2/4)
VCC
INVERTER
D303
13 14
17
MDR-IF540R
IC3
DRIVER AMP
RV2
VOL
OUT1
IN1
MDD1
2 9
DRIVER
-1
(L-CH)
L
OUT2
IN2 MDD2
4 7
DRIVER
-2
(R-CH)
R
5 REF VCC
6
+2.4V
+3.3V +2.4V
S301
-2 -1
VIBRATION
OFF
VCC
FOR IC302
ON
IC304
Q302
INITIAL
MUTE
Q301
Q304
VIBRATION
M301
BUFFER
MOTOR DRIVE
MOTOR
M
Q303 L-CH
MUTE VIBRATION
IC302 (4/4)
COMPARATOR
6
7
M302
5
MOTOR
M
R-CH
VIBRATION
• Signal path
: ANALOG
: RF