LG BD370 Service Manual page 82

ELECTRICAL TROUBLESHOOTING GUIDE
1. REsEt OR pOwER ChECk ................................................................................................................... 4-2
2. systEm ChECk ...................................................................................................................................... 4-3
3. tRAy OpERAtInG Is AbnORmAL ......................................................................................................... 4-4
4. sLEd OpERAtInG Is AbnORmAL ......................................................................................................... 4-5
5. spIndLE OpERAtInG Is AbnORmAL ................................................................................................... 4-6
6. FOCUs ACtUAtOR OpERAtInG Is AbnORmAL ................................................................................. 4-7
7. LAsER OpERAtInG Is AbnORmAL ...................................................................................................... 4-8
HOw TO USE THE BAR-CODE SCAN TOOL
1. bAR-COdE sCAn systEm COnFIGURAtIOn ..................................................................................... 4-9
2. pICk-Up bAR-COdE sCAn tOOL COnFIGURAtIOn. ......................................................................... 4-9
3. RUnnInG bAR-COdE sCAn tOOL ..................................................................................................... 4-10
4. bAR-COdE sCAn pROCEdURE .......................................................................................................... 4-11
INTERNAL STRUCTURE OF THE PICK-UP
1. OptICAL LAyOUt ................................................................................................................................. 4-12
2. sF-bd411 pdIC COmpOsItIOn ........................................................................................................... 4-13
3. pICk-Up COnnECtOR tERmInAL pIn AssIGnmEnts .................................................................... 4-14
MAJOR IC INTERNAL BLOCK DIAGRAM AND PIN DESCRIPTION
1. LIC501 (mt8575) : bLU-RAy sIGnAL pROCEssOR sInGLE ChIp ................................................... 4-15
2. LIC301 (R2A30232sp) : spIndLE mOtOR And 6Ch ACtUAtOR dRIVER ...................................... 4-20
CIRCUIT DIAGRAM
CIRCUIT VOLTAGE CHART
PRINTED CIRCUIT BOARD DIAGRAMS
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
SECTION 4
HL-04P LOADER PART
CONTENTS
.................................................................................................................................. 4-23
................................................................................................................. 4-25
.................................................................................... 4-2
.................................................................................. 4-9
................................................................................... 4-12
.......................................................................................... 4-27
4-1
.................................... 4-15
LGE Internal Use Only