LG P7200 - Page 80

4. TROUBLE SHOOTING
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No
Is BT_RST signal shape similar
to Fig.1 during Powering on Bluetooth
Yes
Replace U103
2V8_VBT at C314=2.8V
No
BT_EN at R344=2.8V
No
Replace U103
Yes
Replace U303
Bluetooth
Power off
Is DEBUG_TX signal similar to
Fig.2 during Powering on Bluetooth?
No
Replace U103
Is DEBUG_RX signal similar to
Fig.2 during Powering on Bluetooth?
No
Replace Headset
Connect BT headset?
No
Is RF Power level at
Antenna Feeding about 0dBm?
Is RF Power level at
Antenna Feeding about 0dBm?
Replace M301
Replace M301
Establish a call
Is DEBUG_RX signal similar to
Fig.2 during Powering on Bluetooth?
No
Replace M301
Are PCM_SYC8,PCM_TX,USC3
signal similar toFig.3?
No
Replace U103
Redownlapd SW
No
Checking Flow