LG SPH4B-W Service Manual

3-30
Copyright © 2021 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
14
13
1.3VA
R525
33
C511 10nF
R542
100
R544
100
R545
100
R546
100
R547
100
R551
100
R550
100
C555
NC
6
75R
K
2.
2
57
5
R
K2.
2
3
85
R
K2
.
2
NC
R578
100
R526
47K
OPT_IN
R548 100
AMP_PROTECT
AMP_FAULT
AMP_PDN
LCD_DAT
LCD_STB
P_CTRL
WL_P_CTRL_WF
REMOCON UART_RX
UART_TX
IC501
60
SR[16]
61
SR[17]
62
SR[22]
63
SR[23]
64
SR[24]
65
SR[25]
66
SR[26]
67
AUX[7]
68
AUX[6]
69
AUX[5]
70
AUX[4]
71
VD33
72
SR[10]
73
SR[11]
74
OP[16]
75
AUX[3]
76
AUX[2]
77
AUX[1]
78
AUX[0]
79
VD3318
80
VSS33/VSS
81
VD3318
82
VD33
83
VDD
VD33
R527 3.9K
OPT_DET
R514
100
R566
100
WL_INT_RR
WL_MSG_RDY_RR
R515
100
LCD_RST
LCD_CD LCD_CLK
LCD_BL
R516
100
TUNER_P_CTRL
R574
100
R529
100
6. OPTICAL
FIG 6-1. OPT IN
13
FIG 6-2. OPT DET
14

LG SPH4B-W Specifications

General

Brand	LG
Model	SPH4B-W
Category	Speaker System
Language	English