Samsung SGH-E100 Service Manual page 42

SGH-E100 Flow Chart of Troubleshooting
14. DCS Transmitter
TX ON (0Level)
Yes
MODULE1 pin5
>= 13dBm
No
MODULE1 pin4
>= 13dBm
No
U201 pin11
>= 13dBm
No
U201 pin1
>= 15dBm
No
U102 pin1
>= 12dBm
No
U101 pin6, 7, 8, 9
>= 500mV
No
Check U504
END
Yes
Resolder CON201, C210
Yes
Yes
Yes
Yes
Check & Resolder RFLO
Yes
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Check MODULE1
pin8 = L,
pin4 = H (2.68V)
No
Resolder C208
Check U201
+VBATT, pin4, 1
OK?
No
Resolder R204
signal, RF26MHz,
RF PSU Part
No
Check U100 pin 10,
22,23>=2.7V
OK?
Yes
7-20
Yes
Change or Resolder
MODULE1
Check ANT Switch
control circuit
Yes
Resolder or Change U201
Check +VBATT or PAM
control signal
Resolder U100