LG CU575 Service Manual page 134

7. CIRCUIT DIAGRAM
1 1 2 2
PMIC VPWR BYPASS
VDD_MSMC : 4.7uF VDD_MSM : 0.1uF
VDD_MSME : 4.7uF VDD_ANA : 0.1uF
VDD_PA : 4.7uF VDD_RUIM : 0.1uF
VDD_RF : 0.1uF
VDD_WLAN : 0.1uF
A A
VDD_MAIN : 0.1uF
VDD_SPKR : 0.1uF
+VPWR
C701
33u
B B
+5V_PWR
ICHARGE
CHG_CNT_N
ICHARGEOUT
VBATT
1005 BATT_FET_N
MSM_RESIN_N
C720 1u
USB_OE_N
USB_CNT_N
USB_VBUS
USB_DAT
USB_D+
USB_SE0
USB_D-
R711 47K
C C
C722
4.7u
1608
TOUCH_LED_DRV_N
KYBD_BACKLIGHT
L701
4.7uH
Switcher Circuit for RF
VREG_RF_SMPS
C729 C730 C731
22u 10u 0.1u
D D
Power Line --> Route carefully!!!!!
Draw the Artwork_line thickly !!!!!
--->> USB_VBUS , FLASH_DRV_N , KPD_DRV_N , KEY_ON_SW_N , MOT_PWR-
E E
END Ref
U404, Q402, D400, BAT400, X400, C449, R410, L402, TP401
1 1 2 2
LGIC(42)-A-5505-10:01
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3 3 4 4 5 5
C836
10u
Check if it is LOW enable.
0.1u C716
1 63
ADC_BYP REF_BYP
2 62
VCHG REF_GND
3 61 R703 121K
ISNS_P REF_ISET
4 60
CHG_CTL_N VCOIN
1%
5 59
ISNS_M MSM_INT_N PM_INT_N
6 58
VBAT TCXO_IN TCXO_PM
7 57
BAT_FET_N PS_HOLD
8 56
FLSH_DRV_N VREG_MSMA
9 U701 55
PON_RESET_N TCXO_EN TCXO_EN
10 54
+VPWR
VREG_USB VDD_ANA
11 53 51 R707
USB_ID PM6650-2M TCXO_OUT TCXO_MSM
12 52
VREG_5V VDD_MSM +VPWR
13 51 51K R708
VREG_MSMP_2.8V
USB_OE_N SBST
14 50
VSW_5V VREG_MSMP
15 49 51K R710
USB_CTL_N SBCK
16 48
USB_VBUS VBACKUP
17 47
USB_DAT SBDT
18 46
USB_D_P XTAL_OUT
TP701
19 45
USB_SE0 SLEEP_CLK SLEEP_CLK
20 44
USB_D_M XTAL_IN
21 43
USIM_P_RST_N
GP1_DRV_N(MPP7) RUIM_RST(MPP6)
USIM_RST_N
USIM_P_CLK
USIM_CLK
USIM_DATA
VREG_USIM_2.85V
VREG_TFLASH_3.0V
C726
C727
2.2u
2.2u
C732
1000p
R717
100K
3 3 4 4 5 5
6 6 7 7
Differential lines, route as equal length as possible !! --> ICHARGE , ICHARGEOUT
VBACK_UP
JTAG_PS_HOLD
D701 RB521S-30
PS_HOLD
VREG_MSMA_2.6V
C719
4.7u
VREG_MSMP_2.8V
SSBDT_PM
C833 C832
15p 15p
VREG_W_PA
U702 FB6831J
1 10
PGND M
2 9
GND PVDD +VPWR
C738
3 8
COP CE 4.7u
4 7
CRES VDD
5 6
IN VOUT
R718
150K C739
4.7u
- 135 -
8 8 9 9 10 10
Battery Charging Circuit
U805
10 9
VBATT P_DRAIN P_COLLECTOR
1 8
+5V_PWR EMITTER1 BASE1 CHG_CNT_N
2 7
USB_VBUS EMITTER2 BASE2 USB_CNT_N
3 6
ICHARGE COLLECTOR GATE BATT_FET_N
4 5
SOURCE DRAIN VBATT
NUS3116MTR2G
ICHARGEOUT
+VPWR
Q704
SI8407DB-T2-E1
+VPWR
C725
10u
100K
R712
R713
PA_FET_N
1K
C728
0.1u
LG Electronics Inc.
LGMC
LGE Internal Use Only
A A
B B
C C
D D