Pcs Receiver - Samsung SGH-E690 Service Manual

Gsm telephone
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Flow Chart of Troubleshooting

9-18. PCS Receiver

RX ON
RF input : CH center freq
Amp : -50dBm
Yes
MODULE1 Pin10
>= -65dBm
Yes
MODULE1 pin7,8
>= -65dBm
Yes
U101
pin22 >= -70dBm
pin23 >= -70dBm
Yes
U101 pin 1,2,3,4
>= 500mV
Yes
Check UCP200
END
No
Resolder RFS100, C102, L100
No
No
Resolder L105,L106,L107
No
or Check pins related to U101
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Check MODULE1
pin14 = L, pin13= L
Yes
Resolder U101
9-37
No
Check ANT Switch
control circuit
Resoder MODULE1

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