LG VX9100 Service Manual page 118

VX9100
Start
1. Press ##5473784236368 + SEND Key ( to set Bluetooth Test Mode)
2. Press #6. FCC Test
3. Press #3. Bluetooth FCC
4. Press #8. DUT Mode
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Only for training and service purposes
Compare with Figure 1.
Is it similar?
YES
Check VDD_MSM.
+2.6V_MSMP2 is OK?
YES
Check VDD_BAT.
+2.85V_BT is OK?
YES
Compare with Figure 2.
Normal signal is 12MHz.
CLK_Ref is OK?
YES
Bluetooth will work properly.
Figure 1.
Checking Flow
Checking Flow
NO
NO
NO
NO
Waveform
Waveform
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Check VCTCXO circuit.
There is a problem with PMIC.
Refer to Logic Troubleshoot.
There is a problem with PMIC.
Refer to Logic Troubleshoot.
Replace U600.
Figure 2.
LGE Internal Use Only