LG 50UH5500 Service Manual page 78

7. Audio Out Block Diagram
AV/COMP
COMP1/AV1/DVI_L/R_IN
TU_SIF
GPIO90_SCLK [AM27]
[A4] AI1L
[B4] AI1R
GPIO89_WCLK [AK28]
GPIO93_MCLK [AL27]
GPIO1_T_SCL[H2]
GPIO2_T_SDA[H1]
[AI2R]
K2Lp
[K1] IFP
HP_L/ROUT
HPOL [F4]
HPOR [F5]
[T4] GPIO17
[D11] SPDIF_OUT
HDMI_ARC
SPDIF_OUT
LGE Confidential
AUD_SCK
[38] CLK_I
AUD_LRCK
[8] WCK
AUD_LRCH
[7] AUD_LRCH
MAIN AMP
I2C_SDA4 / SCL4
[10,11]
NTP7515
AMP_RESET_N
(IC5800)
[36]
AMP_MUTE
22
MICOM
27
SIDE_HP_MUTE
HP_L/ROUT_AMP
H/P AMP
TPA6138A2
LPF
(IC6100)
HDMI3
SPDIF
SPK_L+ / L-
[30, 33] LPF
SPK L
SPK_R+ / R-
[18, 21] LPF SPK R
US Model use this jack fo
r SVC(RS-232C).
H/P Jack