Vusb_Abb; Vgp_Abb; Vapp_Abb; Vabb_Abb - LG KT878 Service Manual

ABB2DBB_RESET
AP2MODEM_RESET

VAPP_ABB

VUSBIN

VUSB_ABB

VABB_ABB

C533 C534 C535 C536
2.2U 1U 1U 10U
(1608) (1608)
VSD_ABB
C421
0.1u
U403 NL17SZ08XV5T2
1
2

VEXT_ABB

VSIM_ABB

VPLL_ABB

VRTC_ABB
VRF_ABB

VMIC_ABB

VGP_ABB

C537 C538 C539 C540 C541 C542
1U 1U 1U 1U 1U 0.1U
- 100 -
4
ABB_AP2DBB_RESET
VCORE_ABB
L502
C511 C514 C515
22U 22U 100N
(2012) (2012)
VSD_ABB
C520 L503
C522 C523
22U
(2012) 22U 100N
(2012)

VLL_ABB

C543 C544
1U 1U
4.故障解决
VBAT9
L8
VBAT10
B7
VBATSENSE
H3
PMTSEL
N4
VCOREPWR1
P4
VCOREPWR2
2.2UH N3
VCORESW1
P3
VCORESW2
P2
VCOREFB
M5
VCOREGND1
L5
VCOREGND2
N5
VSDPWR1
P5
VSDPWR2
2.2UH N6
VSDSW1
P6
VSDSW2
N7
VSDFB
M6
VSDGND1
L6
VSDGND2
N1
VINT1
P1
VINT2
L1
VLL1
R508 NA M1
VLL2
K1
VLLFB
A4
VEXTI
B4
VEXT2
U501
AD6857_2
N8
VRTCSEL
P8
VRTC
P7
VSIM
K12
VMIC
E4
VPLL
D12
VRF
A1
VGP
G13
VABB
D13
VUSBIN
E13
VUSB
D14
VAPP
E12
VAPPGATE
M12
PWREN
C545
100N
(NC)