Gsm Receiver - Samsung SGH-G600 Service Manual

9-12. GSM Receiver

RX ON
Cell Power : -60dBm
Yes
F100 Pin11
≥ -65dBm
Yes
F100 3,4
≥ -68dBm
Yes
U102
pin 24 ≥ -70dBm
pin 25 ≥ -70dBm
Yes
U102 pin 4,5,6,7
≥ 0.2Vp_p
Yes
Check UCP200
END
No
Resolder CN100,C102,L109
No
No
Resolder C104, C105, L111
No
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Check F100
pin10,pin14 = L
Yes
U102pin 11,12,16,
29,32,33,36 ≥2.8V
pin10≥1.8V
Yes
9-19
Flow Chart of Troubleshooting
No
Check ANT Switch
control circuit
Resolder F100
No
Check & Resolder
C122,C126,C128
And PMU Part
Resolder U102