2.2.4 Check RFT6100 Circuit
Test Point
Circuit Flow
I,Q Level is Appear?
YES
NO
Level (near 1V) is Appear?
NO
Control Signal is OK
See next page to check
PAM Circuit
Check C169,C170
YES
Check U201
Replace U105
Check U105 Pin12
NO
Output signal
CELL is Appear?
YES
Check U105 Pin23
Replace U105
C169,C170
(TX_I, Q)
U105 Pin12
(TX_CP)
U105 Pin23
(CELL_OUT)
24
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Summary of Contents for LG-MC2670
Page 17: ...LG MC26 70 DCN Mode Graph 2 1 2 1763 04MHz DCN384 14 Z 3 X B O X C O M ...
Page 21: ...LG MC2670 Waveform DP101 Pin 5 Graph 2 1 4 c DP101 Pin 8 Graph 2 1 4 b 18 Z 3 X B O X C O M ...
Page 32: ...LG MC2670 Circuit Diagram 29 Z 3 X B O X C O M ...
Page 55: ...LG MC2670 Appendix Z 3 X B O X C O M ...
Page 56: ...Z 3 X B O X C O M ...
Page 58: ...Z 3 X B O X C O M TX Line RX Line Local Line RD2670 ...
Page 59: ...Z 3 X B O X C O M TX Line RX Line MIC Line SPK Line RD2670 ...
Page 60: ...Z 3 X B O X C O M RD2670 ...
Page 61: ...Z 3 X B O X C O M SPK Line MIC Line RD2670 ...
Page 65: ...Description LG Part No Q ty MAIN PCB SPFY0083001 1 2 PCB Z 3 X B O X C O M ...