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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
10-25
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Check the Matching
Circuit ?
10-2-7. DCS1800/PCS1900 TX
Band :DCS/PCS
CELL POWER : -50dBm
Tx Power : 0Level
Channel : 660ch
Check the Power @
Pin#17 of U100?
CHECK
U100 and C106
Check RFS100?
TCXO CLOCK
CHECK?
26MHz @ C111
CHECK C131, L107,
C128
OSC401, C111
re-solder or change
RFS100
change or re-solder
NO
YES
NO
NO
YES
YES
YES
Check the Power
@Pin#20 of F100?
F100
re-solder or change
YES
NO
Antenna
re-solder or change
NO
TX Power is too Low!!