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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 &
C2013,C2017=1.8V &
C2018=1.2V
8-4-42. CDMA BC0/10, WCDMA B5/8, LTE5/8/12/13/17/18/19/20/26/28 TX
No
No
Check RFS 1000
about
≥
23dBm?
Check the ANT, Sub PBA
Yes
Check L1046
≥
23dBm
No
Resolder or change
RFS1000, F1000, C1095, C1002,
C1080
Yes
Check component
soldering status ok?
U1000, C1092
Resolder or change
U1000, C1092
No
Yes
Receiver is OK?
Resolder or change
UCP500
No
Yes
Yes
Resolder or change
U2009
No
END
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