LG KE520 Service Manual page 157

8. PCB LAYOUT
FL400
FEM
Rx Sensitivity or Tx Power
U401
RF Transceiver
Rx Sensitivity or Tx Power
U402
PAM
No Tx Power
U102
ABB
Can't boot the phone
U200
MEMORY
Can't boot the phone.
U500
WLAN+BT COMBO MODULE
Can't operate WLAN or BT
connection.
LGE Internal Use Only - 158 -
U201
SPEAKER AMP
Can't play sound.
U103
DBB
Can't boot the phone.
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