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8. Level 3 Repair
NORMAL CONDITION
Catch the channel?
Check component soldering
status U3000
8-4-40. WCDMA B5/8, LTE B5/8/12/13/17/18/19/20/26/28 TX
Yes
No
No
Check RFS1000
about
≥ 23dBm?
Check the ANT1001
Yes
Check C1005
≥ 23dBm
No
Resolder or change
RFS1000, C1005, C1004, L1001
Yes
Check F1000
≥ 23dBm
No
Resolder or change
F1000, L1037, C1055
Yes
Check component
soldering status ok?
PAM1000
Resolder or change
PAM1000
No
Receiver is OK?
Resolder or change
UCP5000
No
Yes
Yes
Resolder or change
U3000
No
END
Yes
Check component
soldering status ok?
L1019
Resolder or change
L1019, C1030, C1029