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Flow Chart of Troubleshooting
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9-29
9-14. GSM Transmitter
TX ON (5Level)
Yes
Yes
Resolder RFS101, C101
Module100 Pin8
>= 20dBm
No
No
Check ANT Switch
control circuit
Module100 pin11
>= 18dBm
Check Module100
pin10 = H (2.68V),
pin12 = L
Yes
Change or Resolder
Module100
Yes
Resolder C130, L111
PAM100 pin18
>= 18dBm
Check PAM100
pin2, 3, 5, 7, 8, 9,
10, 15, 16 OK?
No
PAM100 14pin
>= -11dBm
Yes
Yes
Resolder or Change PAM100
No
Check +VBAT or PAM100
control signal
No
R117,R118,R119,R120
>= 1V
Check & Resolder
UPL102, C109
RF26MHz, RF PSU Part
Check UPL102
pin23,26,28 >=2.7V
No
No
Resolder UPL102
Yes
Yes
Check UCP200
END
Yes
No
Summary of Contents for SGH-E500
Page 32: ...8 PCB Diagrams 8 1 8 1 Top ...
Page 33: ...PCB Diagrams 8 2 8 2 Bottom ...