LG LG-A270 - Page 98

- 98 -
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
9. PCB LAYOUT
_BOT
J
K
L
M
N
P
R
T
1
A
B
C
D
E
F
G
H
17
S400
VA404
R407
VA408
ZD501
R499
R497
C403
R498
C405
R496
C402
R1
R495
C127
R116
U101
R156
R140
U100
MIC200
U201
R225
R222
J201
L201
LD420
814C214C
VA402
FB402
R422
R424
C512
C414
C513
VA220
C113
C306
L380
C409
R412
ANT301
VA223
L304
L303
D302
C397
R223
SW300
VA228
VA227
R316
R315
C401
C404
R158 R157
C120
C203
LD410
C207
VA200
C208
VA201
CN100
C509
C510
R270
R115
TP103
C117
X101
C133
C123
C128
C111
C105
C132
VA218
C508 C590
R543
C511
C242
CN290
C104
C112
C106
C114
L101
C110
J200
R227
C134
R121
LD400
R255
R254
R524
C241
C400
R250
R251
R120
X100
VA219
R226
C223
VA217
C240
R238
C102
C300
L311 L312
L300
R253
C239
C416
R252
C233
C244
C232
R531
C231
R237
R536
C109
C121
C131
L351
L306
L381
C310
L305
L390
L391
L350
R410
TP400
VA216
C308
R542
C119
R228
VA226
VA403
R540
FB403
R420
R528
C419
R423
L403
R418
R154
VB200
C108
C100
C118
C122 R112 C126 R113 R111
C103
C350
C304
R391
R392
C302
C312
L302
L308
C303
C317
C311
L310
VA405
VA407
R544
R541
VA406
C307
L392
C305
ANT300
VA222
C243
R229
VA225
J
4
0
0
FB401
C411
D301
VA401
L402
R421
R419
ANT304
R256
R155
VA221
C115
C116
R370
C301 R394
U300
R414 R413
R230
C316
C229
VA224
R355
C399 C398
L314
C360
C361
C321
C362
L313
TP200
C370
L399
CN203
LGA270_MAIN_EAX64750301_1.0_BOT
MIC200: Main MIC
- Can’t make
- TX voice signal
S400: SD card socket
- No SD memory detect
U300: GSM Quad PAM
- No service
U100 MT6251: Main chipset
- No power on
- System can’t work
CN203: USB connector
- No charging/
- UART connection
ANT304: FM Antenna PAD
- No wireless FM
J400: 3.5pi connector
- No headset function
J200:SIM1 card socket
- No SIM
X101 (26MHz): System main clock
Abnormal operation
- No power on
- Main chip can’t work
X101 (32.768KHz): Abnormal
operation
- No power on
- Main chip can’t work
U101: Memory(FM25Q32)
Abnormal operation
- No power on
- System can’t work
CN290: Battery connector
- No power on
VB200: Vibrator PAD
- No vibration
U201: Charging IC
- No charging
LD400,410,420: Torch LED
- No torch light on