LG E900 Service Manual page 98

Checking Power
TP3
TP2
BT_RESET_N
WLAN_RESET_N
WLAN_HOST_WAKEUP
WLAN_WAKEUP
WLAN_CMD
WLAN_SDIO[3]
WLAN_SDIO[2]
WLAN_SDIO[1]
WLAN_SDIO[0]
WLAN_CLK
CLK_REQ
VREG_MSMP_2.6V
VREG_MSMP6_2.8V
REV.B
Test point
TP1
TP2
TP3
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TP1
Sub board top side
BT_HOST_WAKE_B
6
I2S_DI
7
I2S_DO
8
I2S_CK
9
I2S_WS
10
BT_ENABLE
11
WL_ENABLE
12
WL_HOST_WAKE_N
13
WL_WAKE_N
14
SDIO_CMD
15
SDIO_D3
16
SDIO_D2
17
GND12
TP3
TP2
Schematic of the BT / WiFi block
Net name
+VPWR
VREG_MSMP6_2.8V
VREG_MSMP_2.6V
Test points of BT / WiFi block
OSC_OUT
42
OSC_IN
41
GND15
40
AUD_IN_R
39
AUD_IN_L
38
AUD_OUT_R
37
AUD_OUT_L
36
GND8
35
VBAT2
34
VBAT1
33
GND3
32
SR_VLX1
31
SR_AVDD_2P5
30
GND10
Voltage level
3.7V(nominal)
2.8V
2.6V
- 99 -
4. TROUBLE SHOOTING
CLK_IN
FM_R
FM_L
TP1
REV.E
LGE Internal Use Only
+VPWR