Checking Flow
START
YES
Check Battery Voltage
> 3.2V ?
NO
Charge of Change Battery and try again
Replace U400
Re-download software & try again
The power-on procedure is completed.
The problem may be elsewhere.
The Phone will power on.
Replace the main board.
Check the contact of power-key
or dome switch
Push power-on key and check
the level change of
U400 PWR_ON_SW high?
Check the voltage of
the following port at U400
+2.4V_MSMC
+2.8V_MSMP
+2.6V_MSMA
+2.8V_TCXO
+2.6V_RX
+2.6V_TX
Logic level at PS_HOLD
of U201=High ?
Does it work properly?
Does it work properly?
YES
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
32
Z3X-BOX.COM
Содержание LG-MC2670
Страница 1: ...LGE LG Electronics Inc CDMA PORTABLE CELLULAR PHONE LG MC2670 SERVICE MANUAL Z 3 X B O X C O M ...
Страница 17: ...LG MC26 70 DCN Mode Graph 2 1 2 1763 04MHz DCN384 14 Z 3 X B O X C O M ...
Страница 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 ...
Страница 32: ...LG MC2670 Circuit Diagram 29 Z 3 X B O X C O M ...
Страница 33: ...LG MC2670 Figure 2 3 1 PMIC PM6610 FUNCTIONAL BLOCK DIAGRAM 2 3 Logic Part Trouble 30 Z 3 X B O X C O M ...
Страница 55: ...LG MC2670 Appendix Z 3 X B O X C O M ...
Страница 56: ...Z 3 X B O X C O M ...
Страница 58: ...Z 3 X B O X C O M TX Line RX Line Local Line RD2670 ...
Страница 59: ...Z 3 X B O X C O M TX Line RX Line MIC Line SPK Line RD2670 ...
Страница 60: ...Z 3 X B O X C O M RD2670 ...
Страница 61: ...Z 3 X B O X C O M SPK Line MIC Line RD2670 ...
Страница 65: ...Description LG Part No Q ty MAIN PCB SPFY0083001 1 2 PCB Z 3 X B O X C O M ...