Toshiba Satellite A70 - DVD+-R;DVD+-RW Drive

1 Hardware Overview 1.5 Power Supply
1.4.3 DVD+-R/DVD+-RW Drive
The CD-RW/DVD-ROM combo drive (Toshiba SD-R2412 or TEAC DW-224E-85) is capable of
driving either 12cm (4.72-inch) or 8cm (3.15-inch) DVDs and CDs without using an adaptor.
Read speeds
DVD-ROM Maximum 8 times faster rotational speed
DVD-RAM Standard rotational speed
CD-ROM Maximum 24 times faster rotational speed
Write speeds
CD-R 4,8,16,24 times faster rotational speed
CD-RW 4 times faster rotational speed
High-Speed CD-RW 4,10 times faster rotational speed
Access Speed
Average Random Access Time DVD: 100 ms typ (Toshiba SD-R2412)
110 ms typ (TEAC DW-224E-85)
CD: 90 ms typ (10.3-24X)
DVD-RAM: 170 ms*
Average Random Seek Time DVD: 85 ms typ*
CD: 80 ms typ (10.3-24X)*
DVD-RAM: 130 ms typ*
Average Full Stroke Access Time DVD: 170 ms typ*
CD: 160 ms typ (10.3-24X)*
DVD-RAM: 300 ms*
* Toshiba SD-R2412
Buffer capacity 2 Mbytes (Max)
Supported formats
Applicable
Write Formats:
CD
CD-R
CD-RW
Applicable
Write Disc:
CD
CD-R
CD-RW [CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA,
MIXED MODE CD, CD-I, CD-I Bridge (Photo-CD, Video-CD),
Multisession CD (Photo-CD, CD-EXTRA, Portfolio)]
Applicable
Read Disc:
CD
CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA, MIXED
MODE CD, CD-I, CD-I Bridge (Photo-CD, Video-CD), Multisession CD (Photo-
CD, CD-EXTRA, Portfolio, CD-R, CD-RW), CD-R, CD-RW
DVD
DVD-ROM [DVD-5, DVD-9, DVD-10, DVD-18]
DVD-R
DVD-RW
DVD-RAM
1-14 Satellite A70 Series Maintenance Manual