Wifi Is Not Working - Samsung SM-T805 Service Manual

Level 3 Repair
8-3-8. WIFI

WIFI is not working

Check WIFI function ON
Check the antenna C-clip has no
Check the REAR antenna pattern
(open, crack, deviation, etc)
Check WIFI MIMO RF
PATH(crack,open,etc)
L202,C223,F204,C208,C210,F206,L204,C215,
C216,F203,L213,C221,C226,F205,L232,C275,
F208,CPL200,C225,C222,F201,C224,C254,
F207,L236,C276,C290,F209,C252,C253,C255,
C256,C259,C260,C261,C262,C263,C264,
C265,C266,C267,C268,C269,C270
Check the Voltage on
C244 ≥ 3.4V
Check the Voltage on
TP222&C243=1.8V,C294=1.2V
Check the Status of
OSC200, R205,C272,C273
Resolder or Replace U206
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Yes
Yes
problem?
Yes
Yes
Yes
Yes
Yes
Yes
END
No
Enable WIFI Function
No
Replace the antenna c-clip
ANT200,ANT201,ANT202,ANT203
No
Replace REAR
No
Resolder or change the wrong element
(open, crack, deviation, etc)
No
Check the CHARGER IC(U512)
(crack, open, damaged, etc.)
Check the AP(UCP4001)
No
(crack, open, damaged, etc.)
Check L238 open
No
Resolder or change the
OSC200, R205,C272,C273
8-27