Neighbor Part; Need To Check; Sth-N271 Trouble Shooting - Samsung STH-N271 Service Manual

STH-N271
Trouble Shooting
3
U307 Gain
around 27dB
Y
F309 Insertion loss
around 3dB
Y
U305 Gain
around 30dB
Y
F306_1 around same power
with U305 output
Y
F306 insertion loss
under 3dB
Y
DONE
SAMSUNG Proprietary-Contents may change without notice
N
N
V_PA_BAIS_CELL(U305_5,6,7)=3.0V
N
N
N
2-12

Need to check

V_DRV_CELL=3.0V,
neighbor part or
Replace U307
Replace F309
Need to check
VBATT(U305_14,15,16)=3.2~1V
or Replace U305
Need to check
F313 & neighbor parts
Need to check
F313 & neighbor parts