Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringem
ent of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
NORMAL CONDITION
Catch the channel?
Check soldering status(U22000)
and the voltage at
C22045,C22021,C22001=0.8V,
C22028=0.875V,
C22019,C22008=1.7V,
C22043,C22031=1.2V,
C22042=1.8V
8-4-32. LTE B7/38/41 RX
No
Yes
Yes
Check C21089
≤ -65dBm
Check the ANT
No
Check C21023
≤-65dBm
Yes
Resolder or change
C21023, C21089
No
Check L21024
≤-65dBm
Yes
Resolder or change
F21002, C21079, L21024
No
Check component
soldering status ok?
U21003
Resolder or change
U21003
No
No
Receiver is OK?
Resolder or change
UCP500
No
Yes
Yes
Yes
Resolder or change
U22000
No
END
Check C21036
≤-65dBm
Resolder or change
C21036
