4-1
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
SECTION 4
RS-06A LOADER PART
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE
.....................................................................................4-2
THE DIFFERENCE OF DVD-R/RW, DVD+R/RW DISCS AND DVD-ROM
..............................4-16
1. RECORDING LAYER ............................................................................................................................4-16
2. DISC SPECIFICATION ..........................................................................................................................4-17
3. DISC MATERIALS .................................................................................................................................4-17
4. ORGANIZATION OF THE INNER DRIVE AREA, OUTER DRIVE AREA,
LEAD-IN ZONE AND LEAD-OUT ZONE...............................................................................................4-21
OPTICAL POWER SETTING
..................................................................................................................4-24
1. AUTOMATIC OPTICAL POWER SETTING (SET-BASED) ...................................................................4-24
2. MANUAL OPTICAL POWER SETTING ................................................................................................4-25
2-1. ALPC MEASUREMENT SYSTEM..................................................................................................4-25
2-2. ALPC PROGRAM ...........................................................................................................................4-25
2-3. EXECUTE ALPC PROGRAM.........................................................................................................4-26
2-4. OPTICAL POWER SETTING .........................................................................................................4-28
2-5. CONFIRM OPTICAL POWER SETTING PARAMETER ................................................................4-29
2-6. ATTACHMENT. OPTICAL POWER MEASUREMENT ...................................................................4-30
INTERNAL STRUCTURE OF THE PICK-UP
....................................................................................4-31
1. BLOCK DIAGRAM OF THE PICK-UP (HOP-7232TL) ..........................................................................4-31
2. PICK UP PIN ASSIGNMENT.................................................................................................................4-32
3. SIGNAL DETECTION OF THE P/U.......................................................................................................4-33
DESCRIPTION OF CIRCUIT
...................................................................................................................4-34
1. ALPC (AUTOMATIC LASER POWER CONTROL) CIRCUIT ...............................................................4-34
2. FOCUS/TRACKING/SLED SERVO CIRCUIT .......................................................................................4-35
3. SPINDLE SERVO CIRCUIT ..................................................................................................................4-36
MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION
.....................................4-37
1. LIC101 (AN22117A) : FEP(RF) ANALOG SIGNAL PROCESSOR .......................................................4-37
2. LIC201 (MN103SC7G) : ENCODER, DECODER & DSP SINGAL PROCESSOR ...............................4-43
3. LIC301 (BD7776ARFS) : CD-ROM/DVD-ROM 7CH POWER DRIVER ...............................................4-50
BLOCK DIAGRAM
.....................................................................................................................................4-51
CIRCUIT DIAGRAM
...................................................................................................................................4-53
CIRCUIT VOLTAGE CHART
...................................................................................................................4-55
PRINTED CIRCUIT BOARD DIAGRAMS
...........................................................................................4-57
1. MAIN P.C.BOARD (TOP VIEW).............................................................................................................4-57
2. MAIN P.C.BOARD (BOTTOM VIEW) ....................................................................................................4-59