LG 79UB980T-TA Service Manual page 47

Woofer speaker(PBTL) for 84/98UB98, UC9
Option name : 84/98UB98&UC9
+24V_AMP_WOOFER_R
+24V
L5900
UBW2012-121F
From DACLRCH AUD_LRCH
AUD_LRCK
AUD_SCK
I2C_SDA5
I2C_SCL5
WOOFER_MUTE
-->For fixing AC-OFF POP noise 32"POLA/ROW model
-->32"POLA/ROW LPB's 3.5st drop time is very fast
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
AMP_RESET_N
L5901
BLM18PG121SN1D
AUD_MASTER_CLK
C5920
C5904
10uF
0.1uF
10V
16V
NC_1
C5902
1uF
VDD_PLL
10V
NC_2
NC_3
C5903
1uF
10V DVDD
SDATA
R5900
100
R5901
100
C5901
C5900
33pF
33pF
50V
50V
+3.3V_NORMAL
R5908
100
C5921
1/16W
1000pF +24V_AMP_WOOFER_R
50V
C5907 C5918
0.1uF
10uF
50V
35V
OUT1B
1 30
PGND1B
2 29
THERMAL
BST1B
3 28
41
GND VDR1
4 27
NC_4
5 IC5900 26
AGND
6 NTP7514 25
VDR2
7 24
0x56
WCK BST2A
8 23
BCK PGND2A
9 22
SDA OUT2A
10 21
+24V_AMP_WOOFER_R
C5919
C5908
0.1uF
50V
10uF
35V
C5906
22000pF
50V
R5903
5.6
1/10W
L5902
10uH
C5912
SP-7850_10
390pF
50V
L5903
10uH
C5913
390pF
50V SP-7850_10
R5904
5.6
1/10W
C5909
22000pF
50V
C5911 C5914
1uF 1uF
10V 10V
C5910
22000pF
50V
SPK_WOOFER_R+
R5905
C5916
0.1uF
4.7K
50V
C5915
0.47uF
50V WOOFER_R
C5917
0.1uF R5906
50V
4.7K
SPK_WOOFER_R-
BSD-14Y-UD-059-HD
LGE Internal Use Only