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VX9700
Check if there is any major difference referring
Check if there is any major difference referring
referring to Figure 4.2.1.4 (b). Is it similar?
LG Electronics Inc.
Start
Check pin23 at U102
To Figure 4.2.1.4 (a). Is it similar?
YES
Check I/Q data at U102
To Figure 4.2.1.4 (b). Is it similar?
YES
Check pin1 at U102 (TX _ON signal )
whether it is higher than 2.5V.
YES
Check pin15 at U102 (TCXO signal)
YES
Check pin2, 3, 4 at U102 referring
To Figure 4.2.1.4 (d). Is it similar?
YES
Replace U102
Checking Flow
Checking Flow
YES
NO
NO
NO
NO
RFT6150 circuit is OK. See next page
Check U2002 MSM6500
Check TX_ON signal & MSM
Check TCXO circuit.
Check SBI signal line & MSM
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