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LGE400f Power Block Diagram
VDD_ANA
VDD_L1_L2
VDD_S1
VDD S1
VDD L3 L4 L5 L6
VDD_L3_L4_L5_L6
VDD_S2
VDD_L8_L9_L10_L11
VDD_S3
VDD_L12_L13_L14_L15_
VDD_S4
L16
VDD_NCP_L7
VDD_L17_L18_L19
VDD_SMPS
5pin u-USB
Connector
VBAT
VBUS
Battery
1500mAh
MINI ABB(LP8727-B)
VBAT
KEY LED
BACKLIGHT_KEY
VREG TCXO 2.85V
TCXO
TCXO
19.2Mhz
LGE Internal Use Only
VSW_S1
VSW_S2
VSW_S3
VSW S3
VREG_L3
VREG_L5
VREG_L2
VREG_L3
VREG_L9
VREG L14
VREG_L12
PM8029
VREG_S4
VRG_L18
VREG_L19
VREG_L17
VREG_L11
VREG_L6
VREG_L5
VREG_L16
MPP3
VREG_L13
VIB_DRV_N
VCOIN
VCOIN
VCOIN
MPP_7
G_ C O_ 85
VREG L8
VREG_L8
VREG_L1
VSW_MSME
VREG_L10
B
Backlight
kli ht
charge pump
VREG_MSMC1_1.1V
VREG_MSMC2_1.1V
VREG_MSME_1.8V
VREG_MSMA2_1.2V
VREG_MSMA1_2.6V
VREG_PADAC_2.05V
VREG_PLL_1.1V
VREG_USB_1.8V
VREG_USB_3.3V
_
VREG_P3_2.85V
VREG_MSME_1.8V
VBAT
WCDMA/GSM PAM
VREG_SMPS_2.1V
VREG_RF_2.7V
+1V3_MSM_A3_WCN
+3V_WLAN_WCN
+ 1V8_WLAN_TCXO
+ 1V2_WLAN_WCN
+1V3_MSM_A3_WCN
VREG_USIM1_2.85V
VREG_SDCARD_2.85V
VIB_DRV_N
VBAT
VREG_MSME_1.8V
VREG_TOUCH_3.0V
VREG_LCD_2.8V
MLED[1:5]
CAM AVDD 2.8V
_
_
CAM_DVDD_1.2V
CAM_IOVDD_1.8V
VREG_PROX_2.8V
PROXIMITY
- 16 -
6. BLOCk DIAGRAM
MIC_BIAS
MSM7225A
MCP
8Gb NAND
4Gb RAM
RTR6285A
GPS LNA
WCN1314 : WiFi
VREG_MSME_1.8V
WCN2243 : BT/FM
USIM
Micro SD
VBAT
MOTOR
Audio
Sub System
TOUCH IC
3M CAM
(SoC)
Copyright © 01 LG Electronics. Inc. All right reserved.
Only for training and service purposes
MIC
MIC
LCD
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Troubleshooting
