compaq presario 900 series User Manual

6–4Maintenance and Service Guide
Specifications
Ta b l e  6 - 3
14.1-inch XGA, TFT Display
Dimensions
Height
Width
Diagonal28.50 mm
21.49 mm
35.81 mm11.22 in
8.46 in
14.1 in
Number of colorsUp to 16.8 million
Contrast ratio150:1
Brightness120 nits typical
Pixel resolution
Pitch
For mat
Configuration0.264 × 0.264 mm
1024 × 768
RGB stripe
BacklightEdge lit
Character display80 × 25
Total power 
consumption4.2 W
272638-001.book  Page 4  Thursday, July 25, 2002  4:21 PM 

Specifications
Maintenance and Service Guide6–5
Table 6-4
Hard Drives
40 GB 30 GB 20 GB
User capacity per 
drive
140.0 GB 30.0 GB 20.0 GB
Drive height9.5 mm 9.5 mm 9.5 mm
Drive width70 mm 70 mm 70 mm
Interface typeATA-5 ATA-5 ATA-5
Seek times (typical read, including setting)
Single track
Average
Full stroke3 ms
13 ms
24 ms3 ms
13 ms
24 ms3 ms
13 ms
24 ms
Logical blocks
378,140,160 58,605,120 39,070,080
Logical configuration
Cylinders
Heads
Sectors per track16,683
16
6316,683
16
6316,683
16
63
1 1 GB =...

6–6Maintenance and Service Guide
Specifications
40 GB 30 GB 20 GB
Physical configuration
Cylinders
3
Heads
Sectors per 
track
3
Bytes per sector22,784
4
293 to 560
51225,800
2
398 to 731
51222,784
4
293 to 560
512
Buffer size
32 MB 512 KB 512 KB
Disk rotational 
speed4200 rpm 4200 rpm 4200 rpm
Transfer rate
Interface max 
(MB/s)
2
Media (Mb/s)3
66.6
109 to 203100
155 to 25666.6
109 to 203
2 System capability may differ.3 Actual drive specifications may differ slightly.
Certain restrictions and exclusions...

Specifications
Maintenance and Service Guide6–7
Ta b l e  6 - 5
Diskette Drive
Diskette size3.5 in
Activity indicatorOn system
Height12.7 mm (0.5 in)
Bytes per sector512
Sectors per track
High density
Low density18 (1.44 MB)
9
Tracks per side
High density
Low density80
80
Read/write heads2
Average seek times
Track-to-track (high/low)
Average (high/low)
Settling time
Latency average3 to 6 ms
95 to 174 ms
15 ms
100 ms
272638-001.book  Page 7  Thursday, July 25, 2002  4:21 PM 

6–8Maintenance and Service Guide
Specifications
Table 6-6
DVD-ROM Drive
Applicable diskDVD-5, DVD-9, DVD-10
CD-ROM (Mode 1 and 2)
CD Digital Audio
CD-XA ready (Mode 2, Form 1 and 2)
CD-I ready (Mode 2, Form 1 and 2)
CD-R (read only)
CD Plus
Photo CD (single/multisession)
CD-Bridge
Center hole diameter1.5 cm .59 in
Disk diameter12 cm, 8 cm
Disk thickness1.2 mm .047 in
Tr a c k  p i t c h.74 µm
Access time (typical reads, including setting)
Random (DVD media)
Full stroke (DVD media)
Random (CD media)
Full...

Specifications
Maintenance and Service Guide6–9
Table 6-7
DVD-RW Drive
Applicable diskDVD-5, DVD-9, DVD-10
CD-ROM (Mode 1 and 2)
CD Digital Audio
CD-XA ready (Mode 2, Form 1 and 2)
CD-I ready (Mode 2, Form 1 and 2)
CD-R (read only)
CD Plus
Photo CD (single/multisession)
CD-Bridge
Center hole diameter1.5 cm .59 in
Disk diameter12 cm, 8 cm
Disk thickness1.2 mm .047 in
Tr a c k  p i t c h1.60 µm
Access time
Random
Full stroke< 120 ms
< 175 ms
Audio output levelLine-out, 0.7 to 0.9 Vrms
Cache buffer2 MB
Data...

6–10Maintenance and Service Guide
Specifications
Table 6-8
CD-ROM Drive
Applicable diskCD-ROM (Mode 1, 2, and 3)
CD-XA ready (Mode 2, Form 1 and 2)
CD-I ready (Mode 2, Form 1 and 2)
CD-R (read only)
CD Plus
Photo CD (single/multisession)
CD-Extra
Video CD
CD-WO (fixed packets only)
CD-Bridge
Center hole diameter1.5 cm .59 in
Disk diameter12 cm, 8 cm
Disk thickness1.2 mm .047 in
Tr a c k  p i t c h1.6 µm
Access time
Random
Full stroke< 150 ms
< 300 ms
Cache buffer128 KB
Data transfer rate
Sustained, 16X...

Specifications
Maintenance and Service Guide6–11
Table 6-9
CD-RW Drive
Center hole diameter1.5 cm .59 in
Disk diameter12 cm, 8 cm
Disk thickness1.2 mm .047 in
Tr a c k  p i t c h.74 µm
Access time
Random
Full stroke< 150 ms
< 225 ms
Audio output levelLine-out, 0.7 Vrms
Cache buffer128 KB
Data transfer rate
Sustained, 16X
Sustained, 4X CD-RW
Normal PIO Mode 4 (single burst)150 KB/s
5,520 KB/s
16.6 MB/s
Startup time< 15 seconds
Stop time< 6 seconds
272638-001.book  Page 11  Thursday, July 25, 2002  4:21 PM 

6–12Maintenance and Service Guide
Specifications
Table 6-10
External AC Adapter
Weight.85 lb .39 kg
Power supply
Operating watts
Operating voltage
Operating current
Operating frequency range90 W
110 to 240 VAC RMS
1.5 A RMS
50 to 60 Hz AC
Table 6-11
8-cell, Li ion Battery Pack
Dimensions
Length
Width
Depth
Weight12.57 cm
8.79 cm
2.03 cm
.44 kg4.95 in
3.46 in
0.80 in
0.96 lb
Energy
Vo l t a g e
Amp-hour capacity
Watt-hour capacity14.8 V
minimum 3.7 Ah, typical 3.9 Ah
minimum 53.2 Ah, typical 56.1 Ah
Te m...

Specifications
Maintenance and Service Guide6–13
Table 6-12
System DMA
Hardware DMA System Function
DMA0 Available for audio
DMA1 Entertainment audio
(default; alternate = DMA0, DMA3, none)
DMA2 Diskette drive
DMA3 ECP parallel port LPT1
(default; alternate = DMA0, none)
DMA4 DMA controller cascading (not available)
DMA5 Available for PC Card
DMA6 Not assigned
DMA7 Not assigned
✎PC Card controller can use DMA 1, 2, or 5.
272638-001.book  Page 13  Thursday, July 25, 2002  4:21 PM