Block Diagram - Sony DR-BT22 Service Manual

DR-BT22

3-1. BLOCK DIAGRAM

ANT101
HELICAL
ANTENNA
MIC301
MIC
+2.5V
(MIC)
+1.8V
S105 VOL +
S107 VOL –
(MULTI FUNCTION)
S104
REW
S102
FF
(JOG)
Bx
(PUSH)
DR-BT22
A_OUT_L_P
A_OUT_L_N
41 RF_IN/OUT
A_OUT_R_P
A_OUT_R_N
47 A_IN_L_P/MIC_P
48 A_IN_L_N/MIC_N
BLUE LED
RED LED
IC101
RECEIVER/TRANSMITTER,
CHARGE ON/OFF
MIC AMP,AF AMP,
BLUETOOTH CONTROL
29 VOL +
30 VOL –
31 MFB
35
FR
32 FF
RESET-1
33 PLAY
RESET-2 18
POWER ON
51
52
3
4
34
LED DRIVER
Q102
28
38
+BATT
+
(+3.7V)
–
IC151
RESET
19 4 VOUT VIN 1
S108 +1.8V
(RESET)
+2.5V
(MIC)
MIC 37
39
POWER 36
8 8
SP302
DRIVER
(L-CH)
SP301
DRIVER
(R-CH)
D103
(BLUE)
D102
(RED)
IC261
LI-ION BATTERY
CHARGER
L251
10 OUT
+4.5V
IN 1 SWICHING
9 BATT
Q251
VCC 2
7
PG
3
STAT1 8
TS
IC251
DC-DC CONVERTOR
5 EXT
2
VDD
1 FB
B301
LITHIUM ION
BATTERY
(BP–HP300A)
(DC 3.7V/320mAh)
IC201
+1.8V DC-DC CONVERTER
L201
POWER SWITCH
5 VIN 1
LX
Q201
4 OUT
POWER ON/OFF
POWER
IC202
Q202
+2.5V REG
5 VOUT VIN 1
CE
3
D201
J251
DC IN 3V
3
CE
S101
• Signal Path
: AUDIO