"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1683, 1685, 1687, 1688, and 1690
DVD Drive
Applicable Disk
Center Hole Diameter
Access Time
(typical, including setting)
Disc Thickness
Track Pitch
Laser
Beam Divergence
Audio Output Level Line out Headphone
Cache Buffer
Data Transfer Rate (typical, including setting)
Startup Time
Stop time
6" / 15mm
<100 ms (CD)
<150 ms (DVD)
4.7", 3.15" / 12cm, 8cm 
0.74um (DVD)
.05" / 1.2cm
1.0 volts RMS
0 - 0.6 volts RMS
512 KB/s (CD)
12,000 - 3,000 KB/s (CD)
2705 KB/s (DVD)
< 5 sec 
< 3 sec
Battery Pack
Battery Pack
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| Lithium Ion (Li ion) * |
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| US |
| Metric |
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Dimensions |
| .81 in |
| 2.05 cm |
Height |
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Length |
| 3.05 in |
| 7.75 cm |
Width |
| 5.69 in |
| 14.45 cm |
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Weight |
| 0.85 Ib |
| .39 kg |
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Battery Pack Operating Time |
| 3:00 hr |
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file:///C/SERVICE%20MANUALS/COMPAQ%20_%20checked%20ok/NOTEBOO...0%20SERIES%201683%201685%201687%201688%201690%201694/spec.html (11 of 12)6/27/2004 2:57:31 AM