Compaq 7470 - Presario - 64 MB RAM Maintenance And Service Manual page 78

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Home Removal & Replacement
SPECIFICATIONS
System
Power supply
Seagate hard drives
Diskette drive
Click link for specifications on
Hard drives
DVD drive
Seagate Hard Drives - 3.5"
CD drives
Mouse
Compaq Part Number
Fax/modem
Formatted Capacity
Zip drive
System
Transfer Rate
Disk to Buffer (Mbits/sec)
Interface (Mbytes/sec)
Typical Seek Time
(including settling)
Disk Rotational Speed (RPM)
Data Cylinders
Physical
Logical
Data Heads/ Cylinder
Physical
Logical
Sectors per Track
Physical
Logical
Maintenance and Service Guide
Compaq Presario 7400 Series Computers
Product Description
Quantum or
8.4-GB
112224-001
Physical (MB) 8640 MB
Logical (MB) 8455 MB
105.15-222.87
16.6
IORDY
16.6
DMA
66.6
UDMA
Single Track (ms) 1.3 - 2.1
Average (ms) 9.0 - 10.5
Full Stroke (ms) 18 - 20
5400 +/- 0.1
percent
12210 (+/-)
16383
3
16
244-437 nom
63
Troubleshooting
Jumper & Switch Information
Western Digital hard drives.
10.0-GB
116193-001
10005 MB
8455 MB
188 Max.
16.6
16.6
66.6
2.0 - 2.4
10.5 - 11.5
24 - 26
5400 +/- 0.2 percent
12561
16383
8
16
244-416 (10 zones)
63
Illustrated Parts Catalog
Specifications
13.0-GB 13.0-GB 17.0-GB
143873-001 116194-001 116195-001
13520 13022 17245 MB
8455 13022 17245 MB
323 Max. 171 Max. 188 Max.
16.6 16.6 16.6
16.6 16.6 16.6
66.6 33.3 66.6
1.5 - 3.0 1.5 - 3.0 1.3 - 2.1
9 - 12 9 - 12 9 - 10.5
18 - 20 18 - 20 18 - 20
7200 +/- 5400 +/- 0.2 5400 +/- 0.2 percent
0.2 percent percent
15399 12561 12561
16383 16383 16383
4 6 8
16 16 16
316-508 245-421 (10 244-416
(10 zones) zones) (10 zones)
63 63 63