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United States January 2, 2003
Presario 305 Model
Before You Begin Specifications Parts Catalog
Removal Sequence Troubleshooting Battery Operations
Product Description Pin Assignments
Index
Specifications
This section covers the following specifications of Compaq Presario 305 Model
Portable Computers:
Physical and Environmental System Interrupts System DMA
System I/O Address System Memory Catalog Display
Diskette Drive Hard Drive CD Drive
Battery Pack
Physical and Environmental
U.S. Metric
Dimensions
Height
Depth
Width
0.89 in
8.5 in
10.4 in
22.6 mm
216 mm
264 mm
Weight
3.07 - 3.26 lb 1.39 - 1.48 kg
AC Adapter
Operating Voltage
Operating Current
Operating Frequency Range
Maximum Transient
90 to 260 VAC RMS
1.1 A RMS
47-63 Hz AC
4/50 kV
Temperature
Operating
Nonoperating
41° to 95 °F
-22° to 140 °F
5° to 35 °C
-30° to 60 °C
Relative Humidity (noncondensing)
Operating
Nonoperating (tw = 38.7°C max)
10 to 90%
5 to 90%
101.6 °F
10 to 90%
5 to 90%
38.7 °C
Altitude (nonpressurized environment)
Operating
Nonoperating
0 to 10,000 ft
0 to 30,000 ft
0 to 3.05 km
0 to 9.14 km
Shock
Operating
Non operating
-10 G, 11 ms, half sine
60 G, 2 ms, half sine
Vibration
Operating
Nonoperating
0.25 G, 50 to 500 Hz sine, 1/2 Oct/Min
sweep rate
1 G, 50 to 500 Hz sine, 1/2 Oct/Min
sweep rate
NOTE: Applicable product safety standards specify thermal limits for plastic surfaces. The
computer operates well within this range of temperatures.
System Interrupts
Hardware IRQ System Function
IRQ1 Timer Interrupt
IRQ2 Cascaded
IRQ3 PCMCIA
IRQ4 Modem (COM1)
IRQ5 Audio (default)*
IRQ6 Diskette Drive
IRQ7 Parallel
IRQ8 RTC
IRQ9 Infrared
IRQ10 PCMCIA
IRQ12 Internal Point Stick or External Mouse
IRQ13 Coprocessor (Not available to any peripheral)
IRQ14 IDE Interface (Hard Disk)
NOTES:
PCMCIA cards may assert IRQ3,IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11,
or IRQ15. Either the infrared or the serial port may assert IRQ3 or IRQ4.
*Default configuration; audio possible configurations are: IRQ5, IRQ7,
IRQ9, IRQ10 or none.
System DMA
Hardware
DMA
System Function
0
Available for audio
1
Entertainment Audio (Default;
Alternate =DMA0, DMA3, None)
2
Diskette Drive
3
ECP Parallel Port LPT1
(Default;
Alternate =DMA0, None)
4
DMA Controller Cascading (Not
available)
5
Available for PC Card
6
Not assigned
7
Not assigned
NOTE: PC Card controller can use DMA1, 2 or 5.
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