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Flow Chart of Troubleshooting
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9-51
Check the PIN#4 of F202?
9-15-4. WCDMA 900 transmitter
Band : WCDMA
CELL POWER : -50dBm
TARGET POWER : 22 dBm
DL Channel : 2788 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#57 of U202?
Check U202
NO
YES
NO
Re-solder or change F202
YES
Re-solder or change PAM200
NO
Check the Power
@Pin#12 of PAM200?
YES
NO
Check the Power @Pin#1
of F200?
Re-solder or change F200
YES
Re-solder or change F201
NO
Check the Power @Pin#6
of F201?
YES
Re-solder or change U101
NO
Check the Power @Pin#2
of U101?
YES
Change or re-solder RFS100
NO
Check RFS100?
Antenna
re-solder or change
YES