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465GW3 BOBBY WEGA Circuit Diagrams by oleg min;

Gut, sehr gut! It helps me much! I couldn't find this schema nowhere. Good quality

Text excerpt from page 13 (click to view)

SGH-X140 Flow Chart of Troubleshooting

2-2-4. DCS TX
U402 pin 11 : about 2~3 dBm? NO NO CONTINUOUS TX ON CONDITION CH : 698CH(DCS) TX POWER CODE: 520 CODE Aplied RBW : 100KHz VBW : 100KHz SPAN : 10MHz REF LEV. : 10dBm ATT. : 20dB

U402 pin9 : 2.8 V? YES

U101 check & change

YES C407,CN401 check&change U403 pin10 : about 4~5dBm? YES U402 check & change

NO

U403 pin5 : 3.7 V?

NO

BATTERY check & change

YES

U403 pin 4 : 1.4V ? YES

NO

U701 check

NO

U403 pin9 about : -5dBm ?

YES

U403 pin 6 : 3V? YES U403 change or resolder

NO

U101 check

NO

U404 pin9,32 : 2.8V ?

YES

U101 pinA13,C111 change or resolder

U404 pin8 : 13MHz ? Vp-p : 950mV?

NO

OSC401 change or resolder

YES

NO

U404 pin4,5,6,7:100m V?

YES U101 change or resolder

U404 change or resolder

2-13

SAMSUNG Proprietary-Contents may change without notice
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SGH-X140 SAMSUNG
Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagr…


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SAMSUNG SGH-X140 Circuit Diagrams

Description of SAMSUNG SGH-X140 Circuit Diagrams

SAMSUNG SGH-X140
Circuit Diagrams