LG KG300 Service Manual page 49

4. Troubleshooting
TP401 TP401
D400 D400 TP60MIL TP60MIL
RB520S-30TE61 RB520S-30TE61 TP-1.5 TP-1.5
SC79 SC79
1 2
P1 KCOL6
P3 PWRKEY
P1
P1
P1
VBATBB
P1 GPIO31_CHR_CTL
MT6219: MT6305BN.3=GND
P1 EINT2_CHARGER
MT6227: MT6305BN.3=N.C
PIN3=GND
Vcore=1.2V,Vtrc=1.2V
PIN3=N.C P1
Vcore=1.8V,Vtrc=1.5V
VBATBB
R401 R401
100K 100K
U400 U400
R0402 R0402
32
PWRKEY /RESET
33
P1 BBWAKEUP
PWRBB RSTCAP
31
P1,6 VCXOEN SRCLKEN
VBATSNS
45
VDD VmSEL VBAT
44
VaSEL AVBAT
43
BATDET VBAT
42
BATUSE VREF
36
KP_BL_PWM3 LEDEN NC/BP
35
PWM1_LCM_BL
ALERTEREN DGND
34
GPIO10_VIB_EN VIBRATOREN DGND
AGND
1
CHRIN PGND
2
GATEDRV PGND
R404 R404 100K 100K
1 2 3
NC/DANODE DGND
4
ISENSE/NC
5
CHRCNTL Vcore
6
CHRDET Vio
Va
9
P1 SIMDATA
SIMIO Vtcxo
10
P1 SIMRST
SIMRST Vm
11
P1 SIMCLK
SIMCLK VSIM
12
P1 SIMVCC
SIMVCC Vrtc
13
GPIO32_SIMSEL
SIMSEL
14
P5 S_IO SIO LED
15
P5 S_RST SRST ALERTER
16
P5 S_CLK SCLK VIBRATOR
PMIC_MT6305BN/CY PMIC_MT6305BN/CY
QFN48P QFN48P
VDD
R402 R402
100K 100K
R0402 R0402
24
/SYSRST
23
7
C401 C401 C402 C402
19
100N 100N N.C N.C
26
C0402 C0402 C0402 C0402
47
30
29
17
C403 C403 C404 C404 C405 C405
21 near pin 26
28
100N 100N 100N 100N 4U7 4U7
37
C0402 C0402 C0402 C0402 C0603 C0603
40
46
48
20
27
25
18
8
22
41
39
38
C0402 C0402 C0603 C0603 C0603 C0603 C0603 C0603 C0402 C0402 C0603 C0603 C0603 C0603
- 50 -
P1
VCORE
VDD
AVDD
PMIC_VTCXO
VMEM
VSIM
VRTC
LED_COM P3
LCM_BL_COM
D411 D411
RB520S-30TE61 RB520S-30TE61
R415 R415 SC79 SC79
3K9 3K9
1 2
VBATBB
R0402 R0402
C423 C423
1 2 1
56P 56P
R405 R405 C0402 C0402
2
4.7R 4.7R
R0603 R0603 J401 J401
JT0508-30CSRB JT0508-30CSRB
+ +
JT0508-30CSRB JT0508-30CSRB
V V
VIBRATOR
- -
ESD413 ESD413 ESD414 ESD414
ESD ESD ESD ESD
ESD_PAD ESD_PAD ESD_PAD ESD_PAD