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Flow Chart of Troubleshooting
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9-45
Check the Attenuation
Circuit ?
9-15-2. DCS/PCS transmitter
Band : DCS /PCS
CELL POWER : -50dBm
TX LEVEL : 0
Channel : 698 Ch / 661 Ch
TX Power is too Low!!
Check
TCXO CLOCK
19.2MHz @ C272
Re-solder or change OSC200, C272/C279
NO
YES
Check the Power @
Pin#56 of U202?
Check U202
NO
YES
NO
Check R127, R128, R129
YES
Re-solder or change PAM100
NO
Check the Power
@Pin#16 of PAM100?
YES
Check the Power @Pin#2
of U101?
Re-solder or change U101
NO
YES
Change or re-solder RFS100
NO
Check RFS100?
YES
Antenna
re-solder or change