Samsung SGH-P310 Service Manual - Page 58
DCS Receiver
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Flow Chart of Troubleshooting and Circuit Diagrams 9-2-2. DCS Receiver CONTINUOS RX ON RF INPUT : 698CH Cell power : -50dBm NORMAL CONDITION catch the channel? YES F101 CHECK pin13 ≥ -65dBm? YES F101 CHECK pin3,4 ≥ -65dBm? YES UCD100 CHECK pin8,9 ≥ -65dBm? YES UCD100 CHECK pin34 : 2.8V YES UCD100 CHECK Pin19,21:13MHz YES DCS Receiver is ok? NO CHECK C101, C140, contact NO RFS100 resolder or change NO F101 resolder or change NO L103,L104,C138 resolder or change NO UCP300 PIN A13, C313 resolder or change NO TCX100 CHECK NO TCX100 change NO DCS RX path component resolder or change END 9-22 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization
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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting and Circuit Diagrams
9-22
This Document can not be used without Samsung's authorization
9-2-2. DCS Receiver
CONTINUOS RX ON
RF INPUT : 698CH
Cell power : -50dBm
NORMAL CONDITION
catch the channel?
NO
CHECK
C101, C140, contact
YES
RFS100
resolder or change
F101 CHECK
pin13
≥
-65dBm?
NO
YES
NO
F101
resolder or change
F101 CHECK
pin3,4
≥
-65dBm?
YES
UCD100 CHECK
pin8,9
≥
-65dBm?
L103,L104,C138
resolder or change
NO
YES
UCD100 CHECK
pin34 : 2.8V
NO
UCP300 PIN A13, C313
resolder or change
YES
NO
UCD100 CHECK
Pin19,21:13MHz
TCX100 CHECK
YES
NO
TCX100
change
NO
DCS RX path component
resolder or change
DCS Receiver is ok?
END