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Maintenance
& Service Guide
|
MSG Index | Product Description | Troubleshooting | Illustrated Parts |
Home | Removal & Replacement | Jumpers & Switches | Specifications |
Compaq Presario 7900 Series Personal Computer specifications are listed in the following tables. Select the specification you are interested in from the navigation bar.
Specifications |
System Specifications |
Video Memory |
System Interrupts |
System I/O |
System Memory |
System DMA |
Power Supply |
Diskette Drive |
DVD Drive |
IDE Hard Drives |
Mouse |
Fax/Modem |
CD-RW Drive |
IDE Hard Drives |
||||||
13 GB | 13 GB | 17 GB | 20 GB | 20 GB | ||
Compaq Part Number | 168030-001 | 123635-001 | 168591-001 | 168031-001 | 157403-001 | |
Formatted Capacity Physical (MB) Logical (MB) |
13021 8455 |
13520 8455 |
17020 8455 |
20020 20020 |
20020 8455 |
|
Transfer Rate Head (Mbits/sec) Interface (Mbytes/sec) |
285.5 66 |
323 66 |
285 66 |
148.8-241.9 66 |
323 66 |
|
Typical Seek Time (including settling) Single Track (mS) Average (mS) Full Stroke (mS) |
2.1 10.9 25.0 |
0.9 7.6 14.2 |
2.1 10.9 |
1.5 11.0 18.0 |
0.9 7.6 14.2 |
|
Disk Rotational Speed (RPM) | 5400 | 7200 | 5400 | 7200 | ||
Cylinders Physical Logical |
17499 16383 |
15399 16383 |
15957 16383 |
15399 16383 |
||
Data Heads Physical Logical |
3 16 |
4 16 |
6 16 |
6 16 |
||
Sectors per Track Physical Logical |
342-590 63 |
316-508 63 |
307-512 63 |
316-508 63 |
U. S. | Metric | |
Dimensions Height Length Width |
1.48 in 4.76 in 2.44 in |
37.5 mm 120.8 mm 62.0 mm |
Weight | 6.1 oz | 131 g |
Base Resolution | 400 DPI | |
Tracking Speed (maximum) | 10 in/sec | 25 cm/sec |
Temperature Operating Storage |
32° F to 104° F -4° F to 140° F |
0° C to 40° C -20° C to 60° C |
Lifetime Mechanical Switch |
Exceeds 300 miles Exceeds 1 million operations |
Exceeds 483 km Exceeds 1 million operations |
Relative Humidity | 10% to 90%, noncondensing | |
ESD |
No soft
errors through 10 kV; No hard errors through 15 kV; specific performance depends on host system |
Fax/Modem |
|||
Conexant HCF V.90 56K Data Fax PCI Modem | Supra Express 56i PRO | 1.5Mb DSL | |
Maximum Data Speed (kbps) | 56* | 56* | 56* |
Data | V.90, K56Flex, V.34, V.32terbo, V.32bis, V.32, V.22bis, V.22, V.21, Bell 212A, Bell 103 | V.90, K56Flex, V.34, V.32terbo, V.32bis, V.32, V23, V.22bis, V.22, V.21, Bell 212A, Bell 103 | V.90, K56Flex, V.34,
V.32terbo,V.32bis, V.32, V.22bis, V.22, V.23, V.21, Bell 212A, Bell 103 |
Error Correction | V.42bis,V.42, LAPM, and MNP 2-5 | V.42, LAPM, and MNP 2-4 | V.42 and MNP2-4 |
Fax | V.17 (14.4 kbps transmission speed) V.29, V.27ter, V.21 Channel 2, Class 1 command set, Group III FAX | V.17 (14.4 kbps transmission speed) V.29, V.27ter, V.21 Channel 2, Group III FAX, Class 1 interface | V.17 (14.4 kbps transmission speed) V.29, V.27ter, V.21 Channel 2, Group III, Class 1 interface |
* Both K56flex and V.90 are designed only to allow faster downloads from either K56flex or V.90 compliant digital sources. Maximum achievable download transmission rates are currently unknown, may not reach 56kbps, and will vary with line conditions. |
Dimensions | U. S. | Metric |
|
||
Weight | ||
Applicable Read-Only Disc | ||
CD-ROM | Mode 1 | |
CD-ROM XA | Mode 2, Form 1 and Form 2 | |
CD Digital Audio | ||
CD Extra | ||
CD-I CD-I Ready |
Mode 2, Form 1 and Form 2 | |
Photo CD | Single and Multi Session | |
Video CD | ||
Block Size (Read-Only Disc Parameters) | ||
CD-R Mode 1 | 2048, 2352 bytes | |
CD-R Mode 2, Form 1 | 2048, 2328, 2336, 2340, and 2352 bytes | |
CD-R Mode 2, Form 2 | 2328, 2336, 2340, and 2352 bytes | |
CD-DA | 2352 and 2368 bytes | |
Applicable Writeable Disc | ||
CD-ROM | Mode 1 | |
CD-ROM XA | Mode 2, Form 1 and Form 2 | |
CD Digital Audio | ||
CD-I | Mode 2, Form 1 and Form 2 | |
Video CD | ||
CD-Text | ||
Block Size (Writeable Disc Parameters) | ||
CD-RW Mode 1 | 2048 bytes | |
CD-RW Mode 2, Form 1 | 2048 and 2352 bytes | |
CD-RW Mode 2, Form 2 | 2352 bytes | |
CD-DA | 2352 bytes | |
Center Hole | 15 mm diameter | |
Diameter | 12 cm, 8 cm | |
Thickness | 1.2 mm | |
Track Pitch | 1.6 µm | |
Laser | ||
Access Time | ||
|
150 ms
(typical) 350 ms (typical) |
|
Audio Output Level | ||
|
1.0 V (RMS) at 47 kW 0.7 V (RMS) at 32 W |
|
Cache Buffer | 1 Mbyte (minimum) | |
Sustained Data
Transfer Rate |
|
|
Interface Cable Length (Max) | 18 in | |
Startup Time | < 7
sec (single, typical) < 30 sec (multisession, typical) |
|
Stop Time | < 4 sec |