LG KF690 Service Manual page 60

+5V_PWR
R405 0
VBATT
CHG_CNT_N
ICHARGEOUT
BATT_FET_N
RESET_IN_N
C423 1u
USB_OE_N
USB_CNT_N
USB_VBUS
USB_DAT
C426
R412
USB_D+
4.7u
47K USB_SE0
USB_D-
PMIC_DIAL_LED_EN
PM_ON_SW_N (R414)
KYPD_LED_EN
PM_ON_SW_N
USIM_P_DATA
VREG_RF_SMPS
VREG_MSMC_1.2V(C445)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1
ADC_BYP
2
VCHG
3
ICHARGE ISNS_P
4
CHG_CTL_N
5
ISNS_M
6
VBAT
7
BAT_FET_N
8
FLSH_DRV_N
9 U402
PON_RESET_N
10
VREG_USB
11
USB_ID PM6635
12
VREG_5V
13
USB_OE_N
14
VSW_5V
15
USB_CTL_N
16
USB_VBUS
17
USB_DAT
18
USB_D_P
19
USB_SE0
20
USB_D_M
21
GP1_DRV_N_MPP7
+VPWR
VBATT
R414
100K
4.7u C435
L401 4.7uH
ind_2x1_6h1_r
C438 C439 C440 C441
10u 10u 0.1u 1000p
VREG_MSMC_1.2V
L403 4.7uH
R416
0
C444
C445
4.7u
1000p
4. TROUBLE SHOOTING
VREG_MSMC_1.2V(C445) VREG_MSMC_1.2V(C445)
VREG_MSME_1.8V(C442) VREG_MSME_1.8V(C442)
PM_ON_SW_N (R414) PM_ON_SW_N (R414)
VREG_MSMA_2.6V(C424) VREG_MSMA_2.6V(C424)
VREG_MSMP_2.7V(C425) VREG_MSMP_2.7V(C425)
PS_HOLD(D400) PS_HOLD(D400)
63
C418 0.1u
REF_BYP
62
REF_GND
R406 121K
61
REF_ISET
60
VCOIN
59
MSM_INT_N PM_INT_N
58
TCXO_IN TCXO_PM
57
PS_HOLD
56
VREG_MSMA
55
TCXO_EN
54
VDD_ANA
53 R409 47
TCXO_OUT
52
VDD_MSM
51
SBST
50
VREG_MSMP
49
SBCK
48
VBACKUP
47
SBDT SSBDT_PM
46
XTAL_OUT
45
SLEEP_CLK SLEEP_CLK
44
XTAL_IN
43
RUIM_RST_MPP6 USIM_P_RST_N
VREG_MSMA_2.6V(C424)
+VPWR
VREG_USIM_3.0V
USIM_RST_N
USIM_P_CLK
USIM_CLK
USIM_DATA
VREG_MSME_1.8V
C436
2.2u
L402 4.7uH
R415 0
C442
C443
VREG_MSME_1.8V(C442)
1000p
10u
- 61 -
PS_HOLD(D400)
R403
470K
JTAG_PS_HOLD
D400
PS_HOLD
RB521S-30
C419 1u
V_BACK_UP
VREG_MSMA_2.6V
R408 0
TCXO_EN
VREG_MSMP_2.7V
BUFF_TCXO
R410 56K
R411 0
C424 C425
X400
R413 4.7u
2 4.7u
56K
1
32.768KHz
C427 C428
15p 15p
VREG_MSMP_2.7V(C425)
VREG_MMC_3.0V
C437
2.2u
LGE Internal Use Only