Samsung SM-G975F Service Manual page 80

8. Level 3 Repair
8-4-2. Initial
Initial Failure
Re-download latest SW on the
mobile phone
Re Check "Power on"
Trouble shooting process
Change UCP5000
Change PBA
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Yes
No
Abnormal
No
Normal
Abnormal
Yes
No
END
Abnormal
Check the TCX4000
(Crack, open etc.)
Check the U12003 (Crack etc)