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4. TROUBLE SHOOTING
4.14.2. Checking Module Part
Checking Points
Figure 4-14-2. WI-FI/BT MODULE
GND401
ANT404
C402
2.7n
BT_RESET
WLAN_REG_ON
LGE Internal Use Only
TP 4~8 (SDIO)
TP2 (1V8_VDD)
TP3(VIN_LDO)
TP1 (VBAT)
BT & WIFI Module (LBEH19UNBC_MURATA)
C469 1.8p
R402
R403
DNI
DNI
1
GND11
2
2G4_ANT
3
GND14
4
DBB_BT_INT
BT_WAKE_B
5
BT_DBB_INT
BT_HOST_WAKE_B
6
NC4
7
NC2
8
R415
1V8_VDD
NC8
9
100K
SEL_SPI/SDIO
TP411
10
BT_ENABLE
TP407
11
WL_ENABLE
12
TP405
WL_HOST_WAKE_N
TP412
13
WL_WAKE_N
TP404
14
SPI_MOSI
SDIO_CMD/SPI_DI
TP403
15
SPI_CS
SDIO_D3/SPI_CS
16
SDIO_D2
17
GND12
TP4~8
TP406
SPI_INT
TP401
SPI_MISO
TP402
SPI_CLK
CLK_REQ
UART_TX
UART_RX
TP2
R401
1V8_VDD
0
C408
0.1u
Figure 4-14-3. WI-FI/BT MODULE Circuit
4. TROUBLE SHOOTING
Checking Flow
START
(TP1,2,3) is OK ?
Yes
(TP4,5,6,7,8) is OK ?
Yes
Board Change
CLK32K
CLK32K
46
GND9
45
NC5
44
GND2
43
OSC_OUT
42
OSC_IN
41
GND15
40
U401
NC7
39
NC3
38
NC1
37
NC9
36
GND8
35
VBAT2
34
VBAT1
33
GND3
32
SR_VLX1
31
SR_AVDD_2P5
30
GND10
TP
C472
C473
C474
C475
C476
DNI
4.7u
4.7u
4.7u
DNI
GND
- 102 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
Check
No
POWER
block
No
Check
MODUEL
C483
1n
XTALP
TP1
C409
C410
C496
C497
0.1u
10u
10u
10u
C478
L415
1u
3.3u
4.7u
C484
Only for training and service purposes
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