TABLE OF CONTENTS
INTRODUCTION....................................................................................................................................................3
FEATURES............................................................................................................................................................4
SPECIFICATIONS ...........................................................................................................................................6~15
DISASSEMBLY ...................................................................................................................................................16
EXPLODED VIEW ...............................................................................................................................................17
MECHANICAL REPLACEMENT PARTS LIST...................................................................................................18
DVD & CD DATA PROCESSING..................................................................................................................19~21
1. Data Processing Flow ..................................................................................................................................19
2. Copy Protection and Regional Code Management Block ............................................................................20
3. About the DVD-ROM Regional Code...........................................................................................................21
INTERNAL STRUCTURE OF THE PICK-UP................................................................................................22~25
1. Block Diagram of the Pick-up.......................................................................................................................22
2. Pick up Pin Assignment ...............................................................................................................................23
3. Signal detection of the P/U...........................................................................................................................24
DESCRIPTION OF CIRCUIT .........................................................................................................................26~32
1. ALPC Circuit.................................................................................................................................................26
2. Focus Circuit ................................................................................................................................................27
3. Tracking & Sled Circuit.................................................................................................................................29
4. Spindle Circuit ..............................................................................................................................................30
MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION .........................................................33~48
TROUBLESHOOTING GUIDE ......................................................................................................................49~48
GLOSSARY .........................................................................................................................................................53
BLOCK DIAGRAM ..............................................................................................................................................54
CIRCUIT DIAGRAM ......................................................................................................................................55~57
CAUTION - INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM.
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