Samsung SGH-T429 Bedienungsanleitung PDF herunterladen (Seite 52)

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Flow Chart of Troubleshooting

9-20

9-12. GSM Receiver

RX ON

RF input : CH center freq : +67.7kHz

Amp : -50dBm

Yes

F100 Pin13

>= -65dBm

Resolder CN100,C104

Yes

Check ANT Switch

control circuit

F100 Pin1,2

>= -68dBm

Check F100

pin9,pin10 =L

Yes

Resolder F100

Resolder C116, C119, L113

U101

pin 23 >= -70dBm

pin 24 >= -70dBm

Yes

U101 pin12,13,28,29

>=2.8V

U101 pin 4,5,6,7

>= 1V

Check & Resolder

U101, RF PSU Part

Yes

Resolder U101

Check UCP200

END

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Samsung SGH-T429 Bedienungsanleitung Seite 52