Sony DR-BT50 - Stereo Bluetooth Headset, Service Manual, Page: 9 / 20

9 9
DR-BT50
DR-BT50
• Signal path
F : AUDIO
3-1. BLOCK DIAGRAM
D103
(BLUE)
INDICATOR
41
28
10
5
4
1
+1.8V DC-DC CONVERTER
RF_IN/OUT
MIC301
(MIC)
ANT101
ANTENNA
SPEAKER
(L-CH)
47 A_IN_L_P/MIC_P
PI0_10
RESET-1
4 1
SP302
48 A_IN_L_N/MIC_N
S204
(MULTI FUNCTION)
F3
C4
LED DRIVER
Q102
D102
(RED)
39
PCM_OUT
13
PCM_SYNC 12
PCM_CLK
38 PIO_11
6 AIO_01
5
AIO_03
37 PIO_09
SPEAKER
(R-CH)
SP301
32
PIO_02
31 PIO_04
19
RESET-2 18
S205 VOL
S209
VOL
+2V
REW
S201
FF
D1
D2
D3
C1
(JOG SW)
PIO_07
29 PIO_06
+BATTERY
(+3.7V)
RECHAGEABLE
BATTERY
(LI-ION)
3.7V
PIO_05
CHARGE ON/OFF
30
RECEIVER/TRASMITTER,
MIC AMP,AF AMP,
BLUETOOTH CONTROL
RESET
B3
A5
B1
B2
POWER
+B SWITCH
Q201,202
RESET
VDD 2
EXT
DC-DC CONVERTOR
5
J251
DC IN 3V
3 CE
S101
D201
IC151
+1.8V
+1.5V
(MIC)
IC201
IC202
5
3
1
+1.5V REG.
FB
1
Q251
L251
L201
BT301
+4.5V
IC251
IC101
SUB CONTROL
IC451
SWICHING
STAT1
BATT 9
1
2
7
3
OUT 10
PG
IN
OUT
LX
CE
VOUT
VIN
VIN
+2.8V
IC203
5
3
1
+2.8V REG.
CE
VOUT
VIN
+2V
IC204
5
3
1
+2V REG.
CE
VOUT VIN
VOUT VIN
VCC
8
TS
PI0_03
PI0_01
PI0_00
34
33
35
D1
D3
D2
PI0_08 36
C1
S207
A2
A3
E6
S208
-
-
+
+
INR
1
6 5
1
SD
2
INL
O-I
4 REFI
O-L
10 O-R
13 8
BCLK 7
DACLRC 9
DACDAT
27
SCLK 28
XTI/MCLK
1
SDIN
LHPOUT
14 RHPOUT
RESET
S206
+
-
+1.5V
(MIC)
IC401
AUDIO DAC
IC420
POWER AMP
IC261
LI-ION BATTERY
CHARGER