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LG Electronics Inc.
RF_IN
RF_OUT
RF_IN fed up with CW signal
in low gain mode of PAM
Waveform
Waveform
Figure 4.2.1.6
Check if there is any major difference referring
To Figure 4.2.2.6. Is it similar?
Start
PAM circuit is OK. See next page
YES
Replace U114
YES
whether it is higher than 3.4V.
Check Vcc line
NO
YES
whether it is lower than 2.2V.
Check PA_R1 line
NO
YES
whether it is higher than 2.2V.
Check PA_ON0 line
NO
YES
Check pin3, 7 at U114
Check pin4, 5 at U114 (Vcc)
Check pin2 at U114 (PA _R1 )
Check pin1 at U114 (PA _ON0)
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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 ...