LG -A290 Service Manual page 127

J200(3.5φ Headset)
- No 3.5φ Headset
CN302(Camera connector)
- No Camera
U203(miniABB)
- No Charging
- No USB
- No LCD Backlight
CN301(LCD connector)
- No LCD Display
U100(Memory)
- No booting
BAT100(Backup Battery)
- No service
U101(DBB)
- No Power on
- No service
U400(RF module)
- RF sensitivity
- Tx Power
- No service
SW400(mobile switch)
- Can't make a call
- Tx Low power
- Not good BER
- No Service
LGE Internal Use Only
LD306
R217
C226
R219 R256
R254 VA205
FB200
C310
R313
FB206 R209
C266
FB204 R208 C267
C224 C217 C215
FB201 VA203
C204
FB202
C205 VA204
VA312
VA313
R320 C302
R300 VA317
C316
C317
FL303 FL304
CN300
C314 VA218 VA219
R315 R231 VA220
C313 C254 C256
FB209
C245
C244
U203
R233
R232
FL302
C322
FL301
FL300
R311
K
J
R100 H
G
U100
F C237
E R221
C238
D
R301 VA305
C
B
VA306 R316
C259
A
R415
R304 VA314
C135
R303 U202 C429
14 1
R114
R305
R413
AP R117
AN
AM
AL TP200
AK TP112
AJ
AH
AG
AF
C234 R246 C261
AE TP402
TP401
AD VA221 VA223 VA222
C114 AC
AB
AA
FB105 C140
Y
W
C112
V
U101 U
T
R R102
P
N
M
L L100
K
J
H
G
F
E
C121 D
C
B
C141
3 4 33 32 31 30 29 28 27 26 25 24 2 3 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
L401 L403 L404 L406
C126
R113 C131 C132 R302
C109
C122
FL401
FL400
FB104
L405 C125 C130 VA212
C402
L400
C400
R402
C229
R223
R218
C408 C410 C232 C231
C265 C270
C409 VA207 C263 VA206
C411 C405
LG-A290_MAIN_EAX64452001_1.1_BOT
- 127 -
TP400
C307
C306
C432
C430
C320
C431
C436
R410
C271
9. PCB LAYOUT
LD306(Torch LED)
- No Torch
CN200(Speaker PAD)
- No Speaker
VB300(Vibrator PAD)
- No Vibrator
U200(Audio sub system)
- The Audio working bad
J202(SIM3 socket)
- No SIM3 operation
J201(SIM2 socket)
- No SIM2 operation
U202(Dual SIM controller)
- No SIM2, SIM3 operation
SW300(SIM switch)
- No SIM change operation
U401(BT/FM)
- The FM Radio working bad (in use
intenna)
- The Bluetooth working bad
S200(T-flash/SIM1 combo)
- No SIM1 operation
- No u-SD Memory
MIC200
- No MIC operation
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes