LG 79UB980T-TA Service Manual page 43

NOTE!
Amp name will change based on the applied model.
UC9 : Surround Amp
84/98UB98 : Center Amp
65/79UB98 : Woofer Amp
+24V +24V_AMP_CENTER
L5500
UBW2012-121F
From DACRLRCH
AUD_LRCH2
AUD_LRCK
AUD_SCK
R5500
100
I2C_SDA5
R5501
100
I2C_SCL5
WOOFER_MUTE
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright © 2014 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
+3.3V_NORMAL
R5503
AMP_RESET_N_1
100
R5504 1/16W
L5501
1.5K
BLM18PG121SN1D
AUD_MASTER_CLK
C5525
C5504
10uF
0.1uF
10V
16V
NC_1
VDD_PLL
NC_2
C5502
1uF
GND
10V
NC_3
C5503
DVDD
1uF
10V
SDATA
WCK
BCK
SDA
C5501
C5500
33pF
33pF
50V
50V
C5526
1000pF
50V
+24V_AMP_CENTER
C5507 C5518
0.1uF
10uF
50V
35V
OUT1B
1 30
PGND1B
2 29
THERMAL
BST1B
3 28
41
VDR1
4 27
NC_4
5 IC5500 26
AGND
6 NTP7514 25
VDR2
7 24
0x54
BST2A
8 23
PGND2A
9 22
OUT2A
10 21
+24V_AMP_CENTER
C5519
C5508
0.1uF
50V
10uF
35V
C5506
22000pF
50V
R5502
0
I2S_OUT2 I2S_WOOFER
65/79UB98_I2S_OUT
L5502
10uH
SP-7850_10
R5505
5.6
1/10W
C5513
390pF
50V
C5514
390pF
50V
R5506
5.6
1/10W
L5503
10uH
SP-7850_10
C5509
22000pF
50V
C5511 C5512
1uF 1uF
10V 10V
C5510
22000pF
L5504
50V
10uH
SP-7850_10
R5509
5.6
1/10W
C5520
390pF
50V
C5521
390pF
50V
R5510
5.6
1/10W
L5505
10uH
SP-7850_10
C_SPK_L+
R5507
C5516
0.1uF
4.7K
50V
C5515
SURROUND_L
0.47uF
50V
C5517 R5508
0.1uF
50V 4.7K
C_SPK_L-
C_SPK_R+
R5511
C5523
0.1uF
4.7K
50V
C5522
0.47uF
SURROUND_R
50V
C5524 R5512
0.1uF
50V 4.7K
C_SPK_R-
BSD-14Y-UD-055-HD
2013.12.17
LGE Internal Use Only