Samsung GT-I9500 Service Manual page 75

Level 3 Repair
8-3-23. NFC
NFC is not working
Check the Battery
(NFC Antenna is in Battery)
Check the Voltage on
NFC_EN, NFC_IRQ
Check 26.00MHz Clock which
is OSC801 with C868
Check the Voltage on
C868(VBAT), C882(1.8V) goes
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Yes
Yes
goes high
Yes
Yes
high
Yes
END
No
(antenna/contact crack, open, damaged)
No
Check the TP839, TP842
No
Check the OSC801(crack, open, etc.)
No
Resolder or Replace U800
8-43
Check the battery