LG GWA-4164B Service Manual page 36

3) Layout of DVD+RW disc
Disc Center
Diameter 33 mm
Diameter 22 mm
Diameter 16 mm
Diameter 15 mm
Center
hole
1st transition area
2nd transition area
Lead-in Zone
Inner Disc
Test Zone
in
PSN: 2A480H 2A7C80H
> Inner Disc Test Zone : for performing OPC procedures.
> Inner Disc Count Zone : for counting the number of OPC algorithm performed in IDT Zone.
> Outer Disc Test Zone : for performing OPC procedures.
> Outer Disc Count Zone : for counting the number of OPC algorithm performed in IDT Zone.
40
Diameter 44 mm
Clamping
3rd transtion
Zone
Inner Disc
Count Zone
2DC80H 30000H
Diameter 120 mm
area
Unrecorded Disc
Data Zone
260540H
Information Zone
Lead -out Zone
Outer Disc
Test Zone
262940H
265940H
Rim area
Outer Disc
Count Zone
OUT
266140H