LG GS290 Service Manual page 129

9. PCB LAYOUT
U303 : Vibrator Amp.
- no Vibrator
U306 : Analog S/W
- no Sound
S400 : 2M Camera socket
- no Camera
U200 : MUIC
- no Booting
- no USB/Serial Connection
CN200 : I/O conn.
- no USB Connection.
- no Serial Connection.
U304 : Audio Amp.
- no Sound
U201 : Charging IC
- no Battery Charge
J400 : SIM Conn.
- No SIM
CN300 : Battery Conn.
- no power On
U501 : PAM
- no Service
- RF Sensitivity & TX Power
FL500 : FEM
- no Service
- RF Sensitivity & TX Power
U500 : Transceiver
- no Service
- RF Sensitivity & TX Power
LGE Internal Use Only
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C
B
A
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Y
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V
U
T
R
P
N
M
L
K
J
H
G
F
E
D
C
B
A
1 9 1
GS290_MAIN_1.0_PLACE_BOT
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J300 : 3.5pi Ear-Jack
- no Sound
ANT303 : FM Ant. Conn.
- no Radio with Intenna
U202 : PMIC
- no Booting
- no Power On
- no Service
U101 : Memory
- no Booting
M300 : BackupCap.
- RTC Reset
CN402 : LCD Conn.
- no Display
U401 : ChargePump
- no LCD backlight
U301 : BT+FM Radio Module
- no BT Connection
- no FM Radio
U100 : DBB
- no Power On
- no Servive
S401 : T-Flash Socket
- no T-Flash Memory
X500 : 26Mhz X-tal
- no Power On
- no Service
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Only for training and service purposes