Flow Chart of Troubleshooting
9-
22
9-13. GSM900 Transmitter
R116
>= 1V
Cheak PMIC
TX ON (5 Level)
VCO102(PAM) pin7
>= 2dBm
U101(ASM) pin11
>= 20dBm
C100 >=25dBm
Resolder VCO100
Resolder
U102(PAM)
Yes
No
No
No
Yes
Yes
Yes
Yes
No
R206
>= -8dBm
Resolder or Change OSC401
Yes
No
END
Check U401(MSM)
Replace U101(ASM)
Summary of Contents for SGH-Z310
Page 37: ...8 PCB Diagrams 8 1 8 1 PCB Top Diagram ...
Page 38: ...PCB Diagrams 8 2 8 2 PCB Bottom Diagram ...
Page 41: ...Flow Chart of Troubleshooting 9 3 ...
Page 45: ...Flow Chart of Troubleshooting 9 7 ...
Page 67: ...Flow Chart of Troubleshooting 9 29 ...