![background image](http://html.mh-extra.com/html/samsung/sgh-q208/sgh-q208_service-manual_1190998034.webp)
N
Y
Change
OSC903
U901
17, 18, 19, 20 pin
like left?
N
Board Change
1.75 V
0.75 V
1.25 V
Y
Y
Y
Change CN1001
SAMSUNG Proprietary-Contents may change without notice
5-12
SGH-Q208 Flow Chart of Troubleshooting and Circuit Diagrams
5-12. GSM Transmitter
GSM TX
N
U1006
9 pin : 33 dBm?
N
Change U1005
Change U1004
N
Y
U1006
2, 8 pin:High?
4, 10 pin:Low?
U1005
2 pin:High?
N
N
U1004 2pin:Low?
U703 5pin:Low?
3pin:Low?
N
Y
Change U1006
OSC903
3 pin:0.8 V~2.5 V?
Change U1004
Change
U703
Y
Y
N
U1004 3pin:Low?
Change U1008