Flow Chart of Troubleshooting

9-10. GSM Transmitter

TX ON (5Level)

Yes

PAM702 pin 6(R709)>=1V

Yes

VCO800(TXVCO)

pin1(R801)>=3dBm

Yes

PAM702 pin9(C720)>=33dBm

Yes

U701(ASM)

pin22(C713)>=32dBm

Yes

Check UCP600(MSM6275)

Yes

END

No

No

No

No

Resolder PAM702(PAM)

Resolder VCO800(TXVCO)

Resolder PAM702(PAM)

Resolder U701(ASM)

9-36

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Sharp SGH-I600 manual GSM Transmitter