LG S33A1-D Service Manual

3-1
SECTION 3
ELECTRICAL
CONTENTS
ONE POINT REPAIR GUIDE .......................................................................................................................... 3-2
1. RECEIVER BAR COMPONENT REPAIR GUIDE .................................................................................. 3-2
ELECTRICAL TROUBLESHOOTING GUIDE ............................................................................................... 3-7
1. RECEIVER BAR TROUBLESHOOTING ................................................................................................ 3-7
WAVEFORMS OF MAJOR CHECK POINT ................................................................................................ 3-11
WIRING DIAGRAMS ...................................................................................................................................... 3-15
1. RECEIVER BAR WIRING DIAGRAM ................................................................................................... 3-15
2. WIRELESS SUBWOOFER WIRING DIAGRAM ................................................................................... 3-17
BLOCK DIAGRAMS ...................................................................................................................................... 3-19
1. RECEIVER BAR BLOCK DIAGRAMS .................................................................................................. 3-19
2. WIRELESS SUBWOOFER BLOCK DIAGRAM .................................................................................... 3-23
CIRCUIT DIAGRAMS .................................................................................................................................... 3-25
1. RECEIVER BAR CIRCUIT DIAGRAMS ............................................................................................... 3-25
CIRCUIT VOLTAGE CHART ........................................................................................................................ 3-37
PRINTED CIRCUIT BOARD DIAGRAMS .................................................................................................... 3-41
1. RECEIVER BAR PRINTED CIRCUIT BOARD DIAGRAMS ................................................................. 3-41

LG S33A1-D Specifications

General

Brand	LG
Model	S33A1-D
Category	Speaker System
Language	English