Service Manuals, User Guides, Schematic Diagrams or docs for : LG Mobile Phone LG G7020 LG G7020 8

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>> Download LG G7020 8 documenatation <<

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                                                                    6. TROUBLE SHOOTING



6. TROUBLE SHOOTING
   Figure 6-1. shows a measurement set-up.




                                   Figure 6-1. Measurement set-up




                                             - 51 -
6. TROUBLE SHOOTING



 6.1 Rx Trouble (EGSM)




                         - 52 -
                                6. TROUBLE SHOOTING



6.2 Rx Trouble (DCS)




                       - 53 -
6. TROUBLE SHOOTING



 6.3 Tx Trouble



                               U200 : CALYPSO
                                      (BB Digital Main Chip)
                               U201 : NAUSICA CS
                                      (BB Analog Main Chip)
                               U601 : PAM (PF08122B)
                               U604 : RF Main Chip (TRF6150)
                               U600 : TXVCO (ENFVZ4LO7)
                               U603 : Antenna S/W
                                      (SHS-M090B)
                               N600 : Directional coupler
                                      (LDC15D 190A0007A)
                               D600 : Shottky Diode
                                      (BAT 15-099)




                  1




                      - 54 -
             6. TROUBLE SHOOTING




1




    - 55 -
6. TROUBLE SHOOTING



 6.4 Voice Function Trouble
     A. Receiver




     B. Speaker




                              - 56 -
                         6. TROUBLE SHOOTING



C. Microphone




                - 57 -
6. TROUBLE SHOOTING



 6.5 Display Function Trouble
     A. LCD




                                - 58 -
                            6. TROUBLE SHOOTING



B. Indicator LED




                   - 59 -
6. TROUBLE SHOOTING



 6.6 Other Function Trouble
     A. Vibrator




                              - 60 -
                      6. TROUBLE SHOOTING



B. Charger




             - 61 -

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