Sony DR-BT21G - Stereo Bluetooth Headset; Neckband Style, Service Manual

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DR-BT21G
8 8
DR-BT21G
3-1. BLOCK DIAGRAM
D103
(BLUE)
41
39
38
51
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_09
RESET-1
4 1
SP302
48 A_IN_L_N/MIC_N
S105
MULTI FUNCTION
30
29
D102
(RED)
37
52
A_OUT_L_P
A_OUT_L_N
3
SPEAKER
(R-CH)
SP301
2
A_OUT_R_P
A_OUT_R_N
34
PIO_03
28 PIO_07
19
RESET-2 18
S107 VOL -
S104
VOL +
+1.8V
S102
(JOG SW)
P1O_11
PIO_11
36
PIO_08
+BATT
(+3.7V)
RECHAGEABLE
BATTERY
(LI-ION)
3.7V
RECEIVER/TRANSMITTER
MIC AMP,AF AMP,
BLUETOOTH CONTROL
PI0_06
PI0_05
PI0_04
PI0_01
PI0_02
PI0_00
35
31
33
32
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
+4.5V
IC251
IC261
IC101
SWICHING
STAT1
BATT 9
1
2
7
3
OUT
LI-ION BATTERY
CHARGER
10
PG
IN
OUT
LX
CE
VOUT
VIN
VIN
VOUT VIN
VCC
8
TS
RESET
S108
+
-
+1.5V
(MIC)
LED DRIVER
Q102
.
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: AUDIO
• Signal Path