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8-2-4 Tx Power Failure
TX POWER FAILURE
TEST MODE
LEVEL IS ABOUT
-10dBm AT C541
LEVEL IS ABOUT
+3dBm AT C523
LEVEL IS ABOUT
+24dBm AT C589
LEVEL IS ABOUT
+23dBm AT C599
LEVEL IS ABOUT +23dBm
Trouble Shooting
HRF4
TX POWER
YES
TX POWER
YES
TX POWER
YES
TX POWER
YES
TX POWER
AT ANT PAD
YES
OK
NO
CHANGE C541, C539
NO
CHECK U501(PMB5420)
NO
CHECK POWER AMP
NO
CHECK BIAS OF D503,D500
NO
CHECK ANT PAD IS CONNECTED
PERPORMANCE
OR NOT
8-10
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Table of Contents
Troubleshooting
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