Samsung SM-G975F Service Manual page 85

8. Level 3 Repair
8-4-6-2. Wireless Charging Part (Normal/Fast)
Place Phone on Wireless charging Pad
Charging Sequence Start
VDD_RECT(C8160) = 5V ~ 11V
VDD_WLCHG(C8145)=5V or 10V
Battery is Charging?
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Yes
Yes
Check the
Yes
Yes
END
No
No
No
Replace Combo Antenna
Replace U8003
Replace U8031