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8. Level 3 Repair
NORMAL CONDITION
Catch the channel?
Check soldering
status(U2009) and the
voltage at C2008,C2032
=1.0V & C2018=1.2V &
C2013, C2017=1.8V
8-4-32. TDSCDMA B34/39 RX
No
Yes
Yes
Yes
Check RFS 1000
≤
-65dBm
Check the ANT, Sub PBA
No
Check L1050
≤
-65dBm
Yes
Resolder or change
RFS1000, C1002, C1080
No
Check L1010
≤
-65dBm
Yes
Resolder or change
F1000, L1000
No
Check component
soldering status ok?
U1007, C1025
Resolder or change
U1007, C1025
No
Check C1027
≤
-65dBm
Resolder or change
C1026,C1028, F1002
No
Check L1022
≤
-65dBm
Resolder or change
U1017, C1025
No
Receiver is OK?
Resolder or change
UCP500
No
Yes
Yes
Yes
Resolder or change
U2009
No
END
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