Maintenance
& Service Guide
Presario 305 Model
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Page | Notice | Preface | Product
Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery
Pack Operations
Specifications
(continued)
Diskette Drive |
Diskette Size |
3.5
inch |
Light |
On
drive |
Height |
0.55 in
(1.40 cm) |
Bytes per Sector |
512 |
Sectors per Track
High Density
Low Density |
18 (1.44 MB)/15 (1.2MB)
9
|
Tracks per Side
High Density
Low Density |
80 (1.44 MB)/80 (1.2MB)
80
|
Read/Write Heads |
2 |
Access Times
Track-to-Track (high/low)
Average (high/low)
Settling Time
Latency Average |
3 ms/6 ms
94 ms/174 ms
15 ms
100 ms
|
Energy
Voltage
Amp-hour capacity
Watt-hour capacity |
14.4 V
2.8 Ah
27 Wh
|
Temperature
Operating
Non-operating |
41 to 95°F/5 to 35 °C
-22 to 140°F/-30 to 60 °C
|
Hard Drive |
|
4.3 GB |
Formatted
Capacity per Drive (GB) |
4.3 GB2 |
Logical
Configuration
Cylinders
Heads
Sectors per track
Bytes per sector |
8955
4
N/A
512
|
Typical
Seek Times, ms
(including settling)
Single track
Average
Full stroke
Rotational speed |
N/A
4 ms
13 ms (read)
23 ms
4,009 rpm |
Transfer
Rate |
33.3 MB/s |
Operating
Temperature |
41 to 131°F/5 to 55 °C |
CD-ROM Drive |
Applicable
Disc |
CD-ROM
(Mode 1, 2, and 3)
CD-XA ready (Mode 2, Form 1 and Form 2)
CD-I ready (Mode 2, Form 1 and Form 2)
CD-R (ready only)
CD Plus
Photo CD (single/multisession)
CD Extra
Video CD
CD-WO (fixed packets only)
CD-Bridge |
Center
Hole Diameter |
.59
in/15 mm |
Disc
Diameter |
12 cm, 8 cm |
Disc
Thickness |
1.2 mm |
Track
Pitch |
1.6 um |
Capacity |
Mode 1, 12
Mode 2, 12 cm
8 cm |
550 MB
640 MB
180 MB |
Laser |
Beam Divergence
Output Power
Type
Wave Length
|
53.5 ± 1.5 degrees
0.24 ± 0.1 mw
Semiconducter Laser GaA1As
780 nm ± 25 nm |
Access
Time |
Random
Full Stroke |
< 150 ms
< 300 ms |
Audio
Output Level |
Line out
Headphone |
0.7 V rms
none |
Cache
Buffer |
128 KB |
Data
Transfer Rate
(Sustained) |
24x
Variable
Normal PIO Mode 4 (single burst)
Startup time
Stop time |
150 KB/sec
1500 to 3600 KB/sec
16.6 MB/sec
< 8.3 seconds
< 4.0 seconds |
Lithium Ion (Li Ion) Battery Pack |
Dimensions |
U.S. |
Metric |
Height
Length |
0.9 in
10.47 in |
2.3 cm
26.6 cm |
Weight |
0.48 lb |
0.21 kg |
Cells |
4 Li-Ion |
Energy
Voltage
Amp-hour capacity
Watt-hour capacity |
14.4 V
2.8 Ah
27 Wh
|
Environmental
Requirements
Operating Temperature
Non-operating Temperature |
41° to 95° F
-22° to 140° F |
5° to 35° C
-30° to 60° C |
|