LG RH7521W Service Manual page 106

1) Layout of DVD-RO M disc
Disc Center
Diameter 44mm
Diameter 33mm
Diameter 22mm
Diameter 16mm
Diameter 15mm
Center Clamping
hole
1th transition area
2th transition area
Lead-in Zone
2) Layout of DVD+R disc
Disc Center
Diameter 44mm
Diameter 33mm
Diameter 22mm
Diameter 16mm
Diameter 15mm
Center Clamping
hole
1th transition area
2th transition area
In ner Drive
Lead-in
Area
Zone
Inner Disc
Test Zone
in
PSN :
23080H 27080H 27480H
Inner Disc Test Zone : fo r performing OPC procedures.
Inner Disc Count Zone : For counting the number of OPC algorithm performed in IDT Zone.
Outer Disc Test Zone :
Outer Disc Co unt Zone :
Diameter 120 mm
3th transition
Zone area
Read Only Di s c
Data Zone
Diameter 120 mm
3th transition
Zone area
Unrecorded Disc
Data Zone
Inner Disc
Count Zone
28480H 2A480H 30000H
for performing OPC proc edures.
For counting t he number of OPC algorithm perf ormed in IDT Zone.
Inform ation Zone
Inform ation Zone
Lead-out
Zone
Outer Disc
Test Zone
261940H
260540H
262940H
Rim
area
Lead-out Zone
Rim
area
Outer Drive
Area
Outer Disc
Count Zone
out
263940H
267940H