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4. TROUBLE SHOOTING
4.17 Bluetooth Trouble
Test Points
Circuit Diagram
BLUETOOTH
2V8_VBT
1
VCC
PCM_TX
3
USC3
GND
U205
TC7SH08FS
R239
R231
R221
VBAT
U204
VIN
VOUT
R221
3
4
GND
BGND
330
2
6
BT_EN
STBY
NC
1
5
BH28FB1WHFV
C222
C223
C224
15p
2.2u
0.1u
C228
0.1u
2V8_VMEM
5
4
PCM_SYNC8
U206
2
MAX4717EBC-T
C2
C4
PCM_EN
IN1
NO1
A2
A4
IN2
NO2
C3
C1
USC1
COM1
NC1
A3
A1
USC2
COM2
NC2
2V8_VBT
C225
C226
2.2u
15p
M201
R229
16
_BT_RST
RESETB
0
C229
1
NA
PIO0
2
PIO1
7
C232
PIO2
8
0.1u
PIO3
9
PIO4
10
PIO5
PCM_RX
28
NC
PCM_TX
13
USC_1
SPI_CLK
14
SPI_CSB
12
USC_2
SPI_MOSI
15
SPI_MISO
- 96 -
C230
C232
M201
R230
R218
C226
C225
ANT201
NC1
R218
FEED
NC2
33p
L515
NA
2V8_VBT
LBMA-2C67B3
22
VDD_1_8V
21
VDD_DIG
3
VDD_VREGIN
C230
C231
L511
4
22nH
GND1
2.2u
2.2u
6
GND2
11
GND3
25
GND4
27
R230
47
UART_TX
DEBUG_RX
R231
47
24
UART_RX
DEBUG_TX
23
UART_RTS
26
UART_CTS
19
R234
47
PCM_IN
PCM_TX
17
R235
47
PCM_OUT
PCM_RX
18
R236
47
PCM_SYNC
PCM_SYNC8
20
R238
47
PCM_CLK
USC0
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