Dcs Receiver - Samsung GT-B3410 Service Manual

Flow Chart of Troubleshooting

9-14. DCS Receiver

RX ON
Cell Power : -60dBm
Yes
PAM100 PIN15
≥ -65dBm
Yes
F102 PIN 6, 7
≥ -68dBm
Yes
U103
pin 15 ≥ -70dBm
pin 16 ≥ -70dBm
Yes
U103 pin 6, 7, 8, 9
≥ 0.2Vp_p
Yes
Check U200
END
No
Resolder RFS100, L100, L101, L102,
No
No
Resolder C121, C122, L108
No
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C103, C181
Check F102 PIN1 =
L
Yes
U103 pin
4,6,7,12,26,32,34 ≥
2.8V
Yes
9-24
No
Check ANT Switch
control circuit
Resolder F102
No
Check & Resolder
C127,C128,C138
Resolder U103