LG LAB550H Service Manual page 96

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Table of Contents

LD CHECK GUIDE

...................................................................................................................................... 4-2

1. PURPOSE ................................................................................................................................................. 4-2

2. LD CHECK PROCEDURE ........................................................................................................................ 4-2

HOW TO USE THE SA RESET FUNCTION

1. PURPOSE ................................................................................................................................................. 4-3

2. REQUIRED SA RESET. ........................................................................................................................... 4-3

3. SA RESET PROCEDURE ........................................................................................................................ 4-3

MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION

1. IC501 (MT8553) PIN DESCRIPTION ....................................................................................................... 4-5

2. IC301 (TPIC2050): 9CH MOTOR DRIVE WITH 3 BEAM LASER DIODE DRIVER ................................ 4-8

3. PICK-UP CONNECTOR TERMINAL PIN ASSIGNMENTS .................................................................... 4-10

BLOCK DIAGRAM

.................................................................................................................................... 4-11

SECTION 4

MT8553 F/E LOADER PART

CONTENTS

....................................................................................... 4-3