HP 1925, 1930, 1915, 1920 manual Metric, Drive LS-120 Drive, 10.0-GB, CD ROM Drive DVD Drive 24X

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	Specifications	Parts Catalog
Removal Sequence	Troubleshooting	Battery Operations
Product Description	Pin Assignments	Index

Specifications

System I/O Address

I/O Address		System Function (Shipping Configuration)
0000 - 000F		Direct Memory Access Controller
0020	- 0021	Programmable Interrupt Controller
0040	- 0043	System Timer
0060	- 0060	Standard 101/102-Key or Microsoft Natural Keyboard
0061	- 0061	System Speaker
0064	- 0064	Standard 101/102-Key or Microsoft Natural Keyboard
0070	- 0071	System CMOS/Real Time Clock
0081 - 008F		Direct Memory Access Controller
00A0 - 00A1		Programmable Interrupt Controller
00C0 - 00DF		Direct Memory Access Controller
00E0	- 00E1	Motherboard Resources
00F0 - 00FF		Numeric Data Processor
0170	- 0177	Intel 82371AB/EB PCI Bus Master IDE Controller
01F0 - 01F7		Intel 82371AB/EB PCI Bus Master IDE Controller
0201	- 0201	Gameport Joystick
0274	- 0277	IO Read Data Port for ISA Plug and Play Enumerator
0376	- 0376	Intel 82371AB/EB PCI Bus Master IDE Controller
0378 - 037F		Printer Port (LPT1)
03B0 - 03BB		NeoMagic NMG5 Graphics Controller
03C0 - 03DF		NeoMagic NMG5 Graphics Controller
03F0 - 03F5		Standard Floppy Disk Controller
03F6 - 03F6		Intel 82371AB/EB PCI Bus Master IDE Controller
03F7 - 03F7		Standard Floppy Disk Controller
03F8 - 03FF		Communications Port (COM1)
03D0 - 04D1		Motherboard Resources
0CF8 - 0CFF		PCI Bus
1000 - 103F		Motherboard Resources
1040 - 104F		Motherboard Resources
1050 - 105F		Intel 82371AB/EB PCI Bus Master IDE Controller
1060 - 107F		Intel 82371AB/EB PCI to USB Universal Host Controller
1080	- 10FF	PCI Fast Ethernet DEC 21143 Based Adapter
1400	- 14FF	PCI Communication Device
1800	- 1807	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 Display

	U.S.	Metric
12.1 in TFT
Dimensions	1.1 in	234mm
Height	11.6 in	294.7mm
Depth	9.2 in	29mm
Width
13.3 in TFT
Dimensions
	1.2 in	234mm
Height		294.7mm
	11.6 in
Depth		30.5mm
	9.2 in
Width

Diskette Drive

Storage Drives

Capacity per Diskette (High/Low)

Diskette Size

Number of LED Indicators (Read/Write)

Number of Drives Supported

Drive Rotation (rpm)

Transfer Rate (Kbps/Sec)

Bytes per Sector

Sectors per Track (High/Low) Access Times

Track-to-Track (ms)

Head Setting (ms)

3.5 in Drive		LS-120 Drive
Low	720KB	Information
High	1.44MB	Not Applicable

3.5 in

1

1

360

Low 31

High 62

512

Low 9

High 18

3ms

15ms

Cylinders (High/Low)	Not Available
Number of Read/Write Heads	2

Hard Drive

Hard Drives

	Models		DBCA-		DBCA-		DCXA-
			20648		206480		21000
	Capacity Per Drive		4.8-GB		6.4-GB		10.0-GB
	Drive Type		U-DMA/33		U-DMA/33		U-
							DMA/33
	Logical Configuration
	Cylinders		10068		13424		16383
	Heads		3		4		6
	Sectors per Track		63		63		63
	Bytes per Sector		512		512		512
	Seek Times
	(Typical, including settling Read				Read	13ms Read
	in ms)		13ms		Write	14ms 12ms
			Write				Write
	Single Track		14ms		Read		14ms
			Read		2.5ms
	Full Stroke				Write		Read
			2.5ms		3.0ms		2.5ms
			Write		Read	23ms	Write
			3.0ms				3.0ms
			Read		Write
					24ms		Read
			23ms				23ms
			Write				Write
			24ms				24ms
	Transfer Rate		16.6MB/s		16.6MB/s		16.6MB/s
	At interface
		Hard Drives, continued
	Models		MHH20		MHH20 64AT		MHG2
			48AT				102AT
	Capacity Per Drive		4.8-GB		6.4-GB		10.0-GB
	Drive Type		U-DMA/33		U-DMA/33		U-
							DMA/33
	Logical Configuration
	Cylinders		Not		13424		16383
	Heads		Available		4		6
	Sectors per Track		Not		63		63
	Bytes per Sector		Available		512		512
			Not
			Available
			Not
			Available
	Seek Times
	(Typical, including settling Read			N/A	Read	13ms	Read
	in ms)		Write	N/A Write		14ms 13ms
							Write
	Single Track		Read	N/A	Read		N/A
			Write	N/A 2.5ms
	Full Stroke		Read	N/A	Write		Read
					3.0ms		1.5ms
			Write	N/A	Read	23ms	Write
							N/A
					Write
					24ms		Read
							23ms
							Write
							N/A
	Transfer Rate		15.8MB/s		16.6MB/s		15.8MB/s
	At interface
		Hard Drives, continued
	Models		DK238 A-		DK228 A-65		DK239 A-
			43				65
	Capacity Per Drive		4.3 GB		6.4		6.4 GB
					GB(12.7mm)
	Drive Type						U-
							DMA/33
	Logical Configuration
	Cylinders		Not		13424		16383
	Heads		Available		4		6
	Sectors per Track		Not		63		63
	Bytes per Sector		Available		512		512
			Not
			Available
			Not
			Available
	Seek Times
	(Typical, including settling Read			N/A	Read		Read
	in ms)		Write	N/A Write			Write
							N/A
	Single Track		Read	N/A
			Write	N/A			Read
	Full Stroke		Read	N/A			Write
							N/A
			Write	N/A			Read
							Write
							N/A
	Transfer Rate
	At interface
CD ROM or DVD Drive
		CD ROM Drive			DVD Drive (4X)
		(24X)
	Models	CRN-	CDR-	DRD-424		SD-C2202
		8142B	U242Z
	Dimensions
	Width	128mm	Not	128mm		128mm
	Height	12.7mm	Available 12.7mm			12.7mm
	Depth	129mm	Not	129mm		129mm
			Available
			Not
			Available
	Weight	300g	Not	280g		270g
			Available
	Rotational	5000RPM	Not	2300 RPM		2300RPM
	Speed		Available
	Typical	16.67MB/s Not		16.6MB/s(PIO) 16.7MB/s(PIO)
	Transfer	3600KB/s	Available 5400KB/s			5400KB/s
	Rate		Not
	Sustained		Available
	Data
	Transfer
	Rate
	Access	110ms	Not	150ms		140ms
	Time
	Average		Available
	Random
	Access
	Time
	Spin Up	5s	Not	<15s*1		3.8s
	Time		Available
	Data Buffer 1Mbit		Not	128KB		128KB
	Capacity		Available

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