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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
3-21
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3-2-3. PCS RX
NORMAL CONDITION
catch the channel?
No
CHECK
ANT401
,
R406 , C441
contact?
Yes
CPL400 Check
Pin1
≥
-65dBm ?
No
C413
,
RFS400
resolder or change
Yes
CPL400 Check
Pin14, 15
≥
-65dBm ?
No
CPL400
resolder or change
Yes
U401Check
Pin2, 3
≥
-65dBm ?
No
C417
,
C414
,
L404
resolder or change
Yes
U401
Pin1, 31, 48 : 2.8V ?
Yes
No
U100
pin
J3,J4,K3,K4
resolder or change
U401 Check
Pin35 : 26Mhz?
Vp-p : 950mV?
No
TCX400
resolder or change
Yes
U401 Check
Pin25, 26, 27, 28
Vp-p : 120mV?
No
U401
resolder or change
Yes
U100
CHECK!!
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②
③
④
⑤
⑥
⑦
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