LG SL8YG Service Manual page 28

Wi-fi sound bar

User manual

Owner's manual (58 pages)

Simple manual (8 pages)

Table of Contents

WIRING DIAGRAM ............................................................................................................................................ 3-2

BLOCK DIAGRAMS .......................................................................................................................................... 3-3

1. SYSTEM BLOCK DIAGRAM .................................................................................................................. 3-3

2. POWER BLOCK DIAGRAM ................................................................................................................... 3-4

ONE POINT REPAIR GUIDE ............................................................................................................................ 3-5

1. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR "HELLO"

ON FRONT PANEL ................................................................................................................................. 3-5

2. NO SOUND ............................................................................................................................................. 3-9

3. PROTECTION ERROR ......................................................................................................................... 3-13

WAVEFORMS OF MAJOR CHECK POINT .................................................................................................... 3-16

1. CRYSTAL .............................................................................................................................................. 3-15

2. REMOTE CONTROL ............................................................................................................................ 3-19

3. OPTICAL ............................................................................................................................................... 3-20

CIRCUIT VOLTAGE CHART ........................................................................................................................... 3-21

1. ICs ......................................................................................................................................................... 3-21

2. CAPACITORS ....................................................................................................................................... 3-24

3. CONNECTORS ..................................................................................................................................... 3-24

PRINTED CIRCUIT BOARD DIAGRAMS ....................................................................................................... 3-25

1. MAIN P. C. BOARD DIAGRAM ............................................................................................................ 3-25

2. DSP P. C. BOARD DIAGRAM .............................................................................................................. 3-27

3. AMP P. C. BOARD DIAGRAM ............................................................................................................. 3-29

4. FRONT LED P. C. BOARD DIAGRAM ................................................................................................. 3-31

5. MIC & TOUCH P. C. BOARD DIAGRAM ............................................................................................. 3-31

SECTION 3

ELECTRICAL

CONTENTS

3-1

Only for training and service purposes.

Table of Contents