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LG Electronics Inc.
Check pin23 at U102
Check if there is any major difference referring
To Figure 4.2.1.4 (a). Is it similar?
Start
RFT6150 circuit is OK. See next page
YES
Replace U102
YES
Check I/Q data at U102
Check if there is any major difference referring
To Figure 4.2.1.4 (b). Is it similar?
Check U2002 MSM6500
NO
YES
Check pin1 at U102 ( TX _ON signal )
whether it is higher than 2.5V.
Check TX_ON signal & MSM
NO
Check pin2, 3, 4 at U102 referring
To Figure 4.2.1.4 (d). Is it similar?
YES
Check SBI signal line & MSM
NO
YES
Check pin15 at U102 (TCXO signal)
referring to Figure 4.2.1.4 (b). Is it similar?
Check TCXO circuit.
NO
YES
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Summary of Contents for VX9700
Page 26: ... 25 132 LG Electronics Inc VX9700 28 Powering Down Restart Z 3 X B O X C O M ...
Page 59: ... 58 132 LG Electronics Inc VX9700 Waveform Waveform F106 pin2 DP2 pin2 Z 3 X B O X C O M ...
Page 154: ...CON104 Z 3 X B O X C O M ...
Page 156: ...Z 3 X B O X C O M ...
Page 159: ...CON809 SW101 SW102 Z 3 X B O X C O M ...
Page 160: ...CON808 Z 3 X B O X C O M ...
Page 162: ...CON809 SW104 Z 3 X B O X C O M ...
Page 163: ...CON808 Z 3 X B O X C O M ...
Page 165: ...SW1 CON2 Z 3 X B O X C O M ...
Page 166: ...CON1 Z 3 X B O X C O M ...
Page 167: ... 15 132 LG Electronics Inc VX9700 Appendix 3 Part List VX9700 Part List Z 3 X B O X C O M ...
Page 168: ... 16 132 LG Electronics Inc VX9700 Appendix 4 Components Layout Z 3 X B O X C O M ...
Page 174: ...Z 3 X B O X C O M ...