HP Presario 300 Presario 305 Series Maintenance and Service Guide - Page 81

Before You Begin Removal Sequence Product Description Presario 305 Model Specifications Troubleshooting Pin Assignments Specifications (continued) Parts Catalog Battery Operations Index CD drive Physical and environmental System I/O Address Diskette drive System Interrupts System Memory Catalog Hard drive Battery pack System DMA Display 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 Formatted Capacity per Drive (GB) Logical Configuration Cylinders Heads Sectors per track Bytes per sector Typical Seek Times, ms (including settling) Single track Average Full stroke Rotational speed Transfer Rate Operating Temperature 4.3 GB 4.3 GB2 8955 4 N/A 512 N/A 4 ms 13 ms (read) 23 ms 4,009 rpm 33.3 MB/s 41 to 131°F/5 to 55 °C DVD 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 .59 in/15 mm Diameter 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 Line out Level 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. Height Length 0.9 in 10.47 in Weight 0.48 lb 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 Metric 2.3 cm 26.6 cm 0.21 kg 5° to 35° C -30° to 60° C