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DS80QY.DDEULLK
LG DS80QY.DDEULLK Service Manual
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4-6
Copyright © 2022 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
WAVEFORMS OF MAJOR CHECK POINT
1. CRYSTAL
1
WR786
1M
WC702
8pF
WR787
2.2K
WC701
8pF
DGND
WX700
24.576MHz
1
IN/OUT
2
FLOAT
3
IN/OUT
4
FLOAT
DGND
FIG 1. WX700
24.576 MHz
1
2. FLASH MEMORY
5
4
2
3
SPI_CS
+3.3VA
WIC702
EAN63127201
1
CS#
2
SO/SIO1
3
WP#/SIO2
4
GND
5
SI/SIO0
6
SCLK
7
NC/SIO3
8
VCC
WR728
10K
WC723
100nF
SPI_WP
WR729
10K
SPI_DO
DGND
DGND
SPI_DI
SPI_CLK
FIG 2. VCC, CS#, CLK, DO
2
3
4
5
64
66
Table of Contents
Section 1 Summary
3
Table of Contents
3
Product Safety Servicing Guidelines for Audio Products
4
Servicing Precautions
5
General Servicing Precautions
5
Insulation Checking Prodedure
5
Electrostatically Sensitive (Es) Devices
5
Connecting the Wireless Subwoofer
6
Connecting the Rear Speakers to the Wireless Receiver (Spq8-S, Sold Separately)
7
Woofer & Rear Pairing Method
8
Mounting the Product to a Wall
9
Firmware Update Guide
11
Preparation
11
Usb Update
12
Oobe Update (Lg App)
16
Oobe Update (Google Home App)
18
Hidden Key Mode
20
Name of each Component
21
Specifications
23
Comparison List
24
Section 2 Cabinet & Main Chassis
26
Disassembly Instructions
27
How to Disassemble the Main Unit
28
How to Disassemble the Subwoofer
30
Exploded Views
32
Main Unit (S90Q) Section
32
Wireless Subwoofer (Spq8-W) Section
33
Packing Accessory Section
34
Section 3 Electrical
36
Wiring Diagram
37
Block Diagram
38
Booting When You Turn the Unit On, no Message or "Hello" on Front Panel
39
One Point Repair Guide
39
Sound
42
Protection Error
46
Crystal
49
Waveforms of Major Check Point
49
Remote Control
50
Optical
51
Printed Circuit Board Diagrams
52
Smps P. C. Board Diagram
53
Main P. C. Board Diagram
55
Amp P. C. Board Diagram
57
Front P. C. Board Diagram
58
Touch P. C. Board Diagram
58
Section 4 Wireless Subwoofer Part
60
Wiring Diagram
61
Block Diagram
62
One Point Repair Guide
63
Power on Error
63
Wireless Connection
64
Crystal
65
Flash Memory
65
Waveforms of Major Check Point
65
Pvdd
66
Pwm
67
Led
68
Printed Circuit Board Diagrams
70
Subwoofer P. C. Board
70
Wiring Diagram
73
Block Diagram
74
One Point Repair Guide
75
Power on Error
75
Wireless Connection
76
Waveforms of Major Check Point
77
Printed Circuit Board Diagrams
78
Rear Kit P. C. Board
79
Other manuals for LG DS80QY.DDEULLK
Owner's Manual
81 pages
4
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LG DS80QY.DDEULLK Specifications
General
Brand
LG
Model
DS80QY.DDEULLK
Category
Speaker System
Language
English
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