LG -A100 Service Manual page 70

CIRCUIT
R431 100ohms
NLCD_RESET_1.8
R434 100ohms
LCD_CS_N
R420 100ohms
MEM_AD_[14]
R422 100ohms
MEM_AD_[12]
R411 100ohms
MEM_AD_[10]
R413 100ohms
MEM_AD_[08]
R432 100ohms
MEM_WR_N
R419 100ohms
MEM_AD_[15]
R421 100ohms
MEM_AD_[13]
R410 100ohms
MEM_AD_[11]
R412 100ohms
MEM_AD_[09]
R429 100ohms
MEM_A_[16]
VDD_IO_1V8
R223
10K
ABB_INT_N
LGE Internal Use Only
C420 C408 C410 C413 C415
27p 27p 27p 27p 27p
VBAT
C208
1u
DSS
VAUX_2V85
3
VIN
R212
25
VBAT1
100Kohms
26
VBAT2
27
EXPDET
11
DN
12
DP
13
UART_RX
U1
14
UART_TX
U2
R218 0
15
EAR_L
AUD1
R219 0
16
EAR_R
AUD2
R220 0
17
HS_MIC
MIC
R221
32
DSS
300Kohms
VAUX_2V85
I2C_SDA
I2C_SCL
MLED1
MLED2
LCD_MAKER_ID
C409 C407 C418
C419 C417 C414 C412
27p 27p 27p
27p 27p 27p 27p
VBAT
23
VBUS1
24
VBUS2
22
D-
21
U205
D+
FB204
20
UID
19
RES
18
CAP
C218
1u
R224 R225
10K
10K
- 70 - Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
VBAT
CN401
VAUX_2V85
1
2
TP1
3
4
5
R426
6
DNI
7
R407 120K 8
IOVCC
9
10
11
12
13
14
15
16
17
VAUX_2V85
18
19
20
21
22
23
GND
TP3
3V1_TORCH
VUSB_CHG_IN
C214
C259
1u
1u
MUIC_IO_M
MUIC_IO_P
0
MUIC_ACC_ID
R216
2.2K
C217
DNI
Only for training and service purposes
VDD_IO_1V8
R427
0
TP2
C416
1u
C406
1u