LG MBD-K203Q Service Manual page 2

Karaoke mini hi-fi system

Table of Contents

❍ SECTION 1. GENERAL

• SERVICING PRECAUTIONS ................................................................................................ 1-2

• ESD PRECAUTIONS ............................................................................................................ 1-4

• SERVICE INFORMATION FOR EEPROM ............................................................................ 1-5

• PROGRM DOWNLOAD GUIDE ............................................................................................ 1-7

• SPECIFICATIONS .............................................................................................................. 1-11

❍ SECTION 2. EXPLODED VIEWS

• CABINET AND MAIN FRAME SECTION.............................................................................. 2-1

• DECK MECHANISM EXPLODED VIEW ................................................................................ 2-3

• SPEAKER EXPLODED VIEW .............................................................................................. 2-5

• PACKING ACCESSORY VIEW.............................................................................................. 2-6

❍ SECTION 3. ELECTRICAL PART

• TROUBLESHOOTING GUIDE

AUDIO PART TROUBLESHOOTING GUIDE ........................................................................ 3-1

DVD PART TROUBLESHOOTING GUIDE .......................................................................... 3-11

• WAVEFORMS OF MAJOR CHECK POINT ........................................................................ 3-19

• WIRING DIAGRAM .............................................................................................................. 3-25

• BLOCK DIAGRAM .............................................................................................................. 3-26

• CIRCUIT DIAGRAMS .......................................................................................................... 3-27

• INTERNAL BLOCK DIAGRAM OF IC ................................................................................ 3-47

• CIRCUIT VOLTAGE CHART ................................................................................................ 3-63

• PRINTED CIRCUIT DIARGAMS ........................................................................................ 3-67

❍ SECTION 4. REPLACEMENT PARTS LIST

Only for training and service purposes

[CONTENTS]

................................................................ 4-1

1-1

LGE Internal Use Only

Table of Contents

Fbs203v