Compaq Presario 1900 Presario 1900 Series Maintenance and Service Guide - Page 9

Maintenance & Service Guide Presario 1900 Series Models: 1900T, 1905, 1906, 1910, 1915, 1919, 1920, 1922, 1925, 1926, 1927, 1928, 1929, and 1930 Before You Begin Removal Sequence Product Description Specifications Troubleshooting Pin Assignments Parts Catalog Battery Operations Index Specifications System I/O Address I/O Address 0000 - 000F 0020 - 0021 0040 - 0043 0060 - 0060 0061 - 0061 0064 - 0064 0070 - 0071 0081 - 008F 00A0 - 00A1 00C0 - 00DF 00E0 - 00E1 00F0 - 00FF 0170 - 0177 01F0 - 01F7 0201 - 0201 0274 - 0277 0376 - 0376 0378 - 037F 03B0 - 03BB 03C0 - 03DF 03F0 - 03F5 03F6 - 03F6 03F7 - 03F7 03F8 - 03FF 03D0 - 04D1 0CF8 - 0CFF 1000 - 103F 1040 - 104F 1050 - 105F 1060 - 107F 1080 - 10FF 1400 - 14FF 1800 - 1807 System Function (Shipping Configuration) Direct Memory Access Controller Programmable Interrupt Controller System Timer Standard 101/102-Key or Microsoft Natural Keyboard System Speaker Standard 101/102-Key or Microsoft Natural Keyboard System CMOS/Real Time Clock Direct Memory Access Controller Programmable Interrupt Controller Direct Memory Access Controller Motherboard Resources Numeric Data Processor Intel 82371AB/EB PCI Bus Master IDE Controller Intel 82371AB/EB PCI Bus Master IDE Controller Gameport Joystick IO Read Data Port for ISA Plug and Play Enumerator Intel 82371AB/EB PCI Bus Master IDE Controller Printer Port (LPT1) NeoMagic NMG5 Graphics Controller NeoMagic NMG5 Graphics Controller Standard Floppy Disk Controller Intel 82371AB/EB PCI Bus Master IDE Controller Standard Floppy Disk Controller Communications Port (COM1) Motherboard Resources PCI Bus Motherboard Resources Motherboard Resources Intel 82371AB/EB PCI Bus Master IDE Controller Intel 82371AB/EB PCI to USB Universal Host Controller PCI Fast Ethernet DEC 21143 Based Adapter PCI Communication Device PCI Communication Device System Memory Catalog Memory Address Device 00000000 - 0009FFFF System board extension for PnP BIOS 000A0000 - 000AFFFF NeoMagic NMG5 Graphics Controller 000B0000 - 000BFFFF NeoMagic NMG5 Graphics Controller 000C0000 - 000CBFFF NeoMagic NMG5 Graphics Controller 000E4000 - 000FFFFF System Board Extension for PnP BIOS 00100000 - 03FFFFFF System Board Extension for PnP BIOS 04000000 - 04000FFF Texas Instruments PCI-1225 CardBus Controller 04001000 - 04001FFF Texas Instruments PCI-1225 CardBus Controller F4000000 - F40000FF PCI Communication Device F4000400 - F40007FF PCI Fast Ethernet DEC 21143 Based Adapter F4100000 - F41FFFFF NeoMagic NMG5 Graphics Controller F4100000 - F47FFFFF Intel 82443BX Pentium(r) II Processor to AGP Controller F4200000 - F42FFFFF PCI Multimedia Audio Device F4400000 - F47FFFFF NeoMagic NMG5 Graphics Controller F4C00000 - F4FFFFFF PCI Multimedia Audio Device F4C00000 - F5FFFFFF Intel 82443BX Pentium(r) II Processor to AGP Controller F5000000 - F5FFFFFF NeoMagic NMG5 Graphics Controller F8000000 - FBFFFFFF Intel 82443BX Pentium(r) II Processor to PCI Bridge (with GART Support) FFF80000 - FFFFFFFF Motherboard Resources Display Information 12.1 in TFT Dimensions Height Depth Width 13.3 in TFT Dimensions Height Depth Width 12.1 in TFT Display U.S. Metric 1.1 in 11.6 in 9.2 in 234mm 294.7mm 29mm 1.2 in 11.6 in 9.2 in 234mm 294.7mm 30.5mm Diskette Drive Storage Drives 3.5 in Drive Capacity per Diskette (High/Low) Low 720KB High 1.44MB Diskette Size 3.5 in Number of LED Indicators (Read/Write) 1 Number of Drives Supported 1 Drive Rotation (rpm) 360 Transfer Rate (Kbps/Sec) Low 31 High 62 Bytes per Sector 512 Sectors per Track (High/Low) Low 9 High 18 Access Times LS-120 Drive Information Not Applicable Track-to-Track (ms) Head Setting (ms) Cylinders (High/Low) Number of Read/Write Heads 3ms 15ms Not Available 2 Hard Drive Models Capacity Per Drive Drive Type Logical Configuration Hard Drives DBCA20648 4.8-GB DBCA206480 6.4-GB U-DMA/33 U-DMA/33 DCXA21000 10.0-GB UDMA/33 Cylinders Heads Sectors per Track Bytes per Sector Seek Times 10068 3 63 512 13424 4 63 512 16383 6 63 512 (Typical, including settling Read in ms) 13ms Write Single Track 14ms Full Stroke Read 2.5ms Write 3.0ms Read 23ms Write 24ms Read 13ms Read Write 14ms 12ms Write Read 14ms 2.5ms Write Read 3.0ms 2.5ms Write Read 23ms 3.0ms Write 24ms Read 23ms Write 24ms Transfer Rate At interface 16.6MB/s 16.6MB/s 16.6MB/s Hard Drives, continued Models MHH20 48AT MHH20 64AT MHG2 102AT Capacity Per Drive 4.8-GB 6.4-GB 10.0-GB Drive Type U-DMA/33 U-DMA/33 UDMA/33 Logical Configuration Cylinders Heads Sectors per Track Bytes per Sector Seek Times Not Available Not Available Not Available Not Available 13424 4 63 512 16383 6 63 512 (Typical, including settling Read in ms) Write Single Track Full Stroke Read Write Read Write N/A Read 13ms Read N/A Write 14ms 13ms Write N/A Read N/A N/A 2.5ms Write Read N/A 3.0ms 1.5ms N/A Write Read 23ms N/A Write 24ms Read 23ms Write N/A Transfer Rate At interface 15.8MB/s 16.6MB/s 15.8MB/s Hard Drives, continued Models DK238 A43 DK228 A-65 DK239 A65 Capacity Per Drive 4.3 GB 6.4 GB(12.7mm) 6.4 GB Drive Type UDMA/33 Logical Configuration Cylinders Heads Sectors per Track Bytes per Sector Seek Times Not Available Not Available Not Available Not Available 13424 4 63 512 16383 6 63 512 (Typical, including settling Read N/A Read in ms) Write N/A Write Single Track Full Stroke Read N/A Write N/A Read N/A Write N/A Transfer Rate At interface Read Write N/A Read Write N/A Read Write N/A CD ROM or DVD Drive CD ROM Drive (24X) Models CRN8142B CDRU242Z Dimensions DVD Drive (4X) DRD-424 SD-C2202 Width Height Depth 128mm 12.7mm 129mm Not 128mm Available 12.7mm Not 129mm Available Not Available 128mm 12.7mm 129mm Weight 300g Not 280g Available 270g Rotational 5000RPM Not 2300 RPM Speed Available 2300RPM Typical Transfer Rate Sustained Data Transfer Rate 16.67MB/s Not 16.6MB/s(PIO) 16.7MB/s(PIO) 3600KB/s Available 5400KB/s 5400KB/s Not Available Access Time Average Random Access Time 110ms Not 150ms Available 140ms Spin Up 5s Time Not