Compaq XL280 User manual

Presario 1800 Series
Model XL2
Before You
Begin
Product
Description Specifications
Pin
Assignments
Battery
Operations Troubleshooting
Removal
Sequence
Parts
Catalog MSG Index
Welcome to the Maintenance & Service Guide (MSG)
Welcome to the Maintenance and Service Guide (MSG) for Compaq Presario 1800XL
Series Portable Notebooks. This online guide is designed to serve the needs of
technicians whose job is to repair Compaq products.
To effectively use this guide, refer to the list of bookmarks at the left of the screen
whenever you need to find information fast.
For copyright and trademark information, refer to Notice. To locate your unit’s serial
number, to see symbol conventions, or to view technician’s notes, see Preface. This MSG
is updated online as needed.
For comments or questions about the contents of this MSG, contact Compaq.
To report a technical problem, contact your Regional Support Center or IM Help Center.

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES BEFORE YOU BEGIN 1
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Before You Begin
Notice
The information in this guide is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL
ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS
MATERIAL.
This guide contains information protected by copyright. No part of this guide may be
photocopied or reproduced in any form without prior written consent from Compaq
Computer Corporation.
©2000 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq, Presario 1800 Series, Registered with the U.S. Patent and Trademark Office.
Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation.
Windows 98 and Windows 2000 are trademarks of Microsoft Corporation.
The software described in this guide is furnished under a license agreement or
nondisclosure agreement. The software may be used or copied only in accordance with the
terms of the agreement.
Product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.
Maintenance and Service Guide
Compaq Presario 1800 Series Notebook Computer
Second Edition (September 2000)
Compaq Computer Corporation
privacy and legal statement

2 BEFORE YOU BEGIN PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Preface
The Maintenance and Service Guide is a troubleshooting guide for use as a reference when
servicing Compaq Presario 1800 Series Notebook Computers.
Compaq Computer Corporation reserves the right to make changes to Compaq Presario
1800 Series Notebooks without notice.
Symbols
The following words and symbols alert you to special messages throughout this guide.
ÅWARNING: Text set off in this manner indicates that a failure to follow the
directions in the warning could result in bodily harm or loss of life.
ÄCAUTION: Text set off in this manner indicates that failure to follow the directions
in the caution could result in damage to equipment or loss of data.
Important: Text set off in this manner presents clarifying information or specific
instructions.
Note: Text set off in this manner presents comments or interesting points of
information.
Technician Notes
ÅWARNING: Only authorized technicians trained by Compaq should repair this
equipment. All troubleshooting and repair procedures are detailed to allow only
subassembly/module-level repair. Because of the complexity of the individual
boards and subassemblies, the user should not attempt to make repairs at the
component level or modifications to any printed circuit board. Improper repairs
can create a safety hazard. Any indications of component replacement or printed
circuit board modifications may void any otherwise valid warranty.

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES BEFORE YOU BEGIN 3
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Serial Number
The unit’s serial number 1is required when requesting information or ordering spare
parts. The serial number is located on the underside of the Notebook as shown below.
Locating Additional Information
The following documentation is available to support this product:
•Compaq Presario 1800 Series Notebook documentation set
•Introducing Windows 98 Guide
•Introducing Windows 2000 Guide
•Service Training Guides
•Compaq Service Advisories and Bulletins

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES PRODUCT DESCRIPTION 1
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Product Description
This chapter describes the features of each of the Presario 1800XL Series Notebooks. It
also provides illustrations of the exterior components unique to these units.

2 PRODUCT DESCRIPTION PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Models and Features
*All models have a 3.5” Diskette Drive which uses 1.44 MB Diskettes.
Compaq Presario 1800 Series Portable Computer Models
Features XL280* XL380*
Display TFT 14.1 in
TFT/LVD 15 in
TFT 15.0 in
Processor 600 MHz 256 K Cache
650 MHz 256 K Cache
PIII 700 MHz 256 K Cache
Hard Drive 6.0 GB
12 GB
15.0 GB
CD or DVD
Drive
24X 2C CD-ROM
6X DVD
8X DVD
8X DVD
Modem 56 K Data/Fax 56 K PCI Data/Fax
Networking 10/100 TX Integrated
Ethernet
10/100 TX Integrated
Ethernet
Battery 3.2 Li-ion Enhanced 3.6 Li-ion Enhanced
Memory 64 MB PC100 128 MB PC100
Features XL381* XL390*
Display TFT 15.0 in TFT 15.0 in
Processor PIII 700 MHz 256K Cache PIII 850 MHz 256K Cache
Hard Drive 15 GB 20.0 GB
CD or DVD
Drive
8X DVD 8X DVD
Modem 56 K PCI Data/Fax 56 K PCI Data/Fax
Networking 10/100 TX Integrated
Ethernet
10/100 TX Integrated
Ethernet
Battery 3.6 Li-ion Enhanced 3.6 Li-ion Enhanced
Memory 128 MB PC100 128 MB PC100

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES PRODUCT DESCRIPTION 3
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Front of Unit
#Description #Description
1Display Release Latch 6Integrated Speakers
2Display 7TouchPad Button (Left)
3Power (On/Off) Button 8Scroll Up/Down Button
4Keyboard 9TouchPad Button (Right)
5TouchPad -Model Number

4 PRODUCT DESCRIPTION PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Internet Zone Buttons and Lights
Model XL280
#Description #Description
1AC Adapter Light 7Instant Search Button
2Caps Lock Light 8Online Marketplace (U.S./Puerto Rico)
Instant Answer (outside the U.S.)
3Instant Internet Access 9Retail Central (U.S./Puerto Rico)
Instant E-Commerce (outside the U.S.)
4Instant E-mail Access -Num Lock Light
5My Presario Instant Access qScroll Lock Light
6Power Button

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES PRODUCT DESCRIPTION 5
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Model XL3xx
#Description #Description
1AC Adapter Light 7Digital Audio Button
2Caps Lock Light 8Entertainment Button
3Instant Internet Access 9Retail Central Button
4Instant E-mail Access -Num Lock Light
5My Presario Instant Access qScroll Lock Light
6Power Button

6 PRODUCT DESCRIPTION PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Front Bezel Components
#Description #Description
1Previous Track Button 7Battery Gauge
2Next Track Button 8DisqPlay On/Off Button
3Sleep Status Icon 9Volume Down Button
4Power Status Icon -Volume Up Button
5Battery Charging Status Icon qPlay/Pause Button
6DisqPlay Status Icon wStop Button

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES PRODUCT DESCRIPTION 7
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Left-Side Components
Note: XL3xx models have silver lids.
#Description #Description
1Security Slot 4CD or DVD Manual Eject Hole
2CD or DVD Drive 5Diskette Drive
3CD/DVD Drive Eject Button 6Diskette Drive Eject Button

8 PRODUCT DESCRIPTION PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Right-Side Components
Note: XL3xx models have silver lids.
#Description #Description
1Battery Compartment 5Microphone Jack
2PC Card Eject Button 6Modem Port
3PC Card Slot 7Ethernet Port
4Headphone Jack

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES PRODUCT DESCRIPTION 9
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Underneath the Unit
#Description #Description
1Pop-Up Foot 3Memory Compartment
2Serial Number 4Pop-Up Foot

10 PRODUCT DESCRIPTION PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Rear Connectors
Note: XL3xx models have silver lids.
#Description #Description
1Keyboard/Mouse Port 6TV-Out Connector
2AC Adapter Connector 7External Monitor Port
3Parallel Port 8Serial Ports
4QuikDock Connector 9Universal Serial Bus Port
5Fan Vent

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES PRODUCT DESCRIPTION 11
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Optional QuikDock
Components
Connectors
#Description
1QuikDock Interface Connector
2QuikDock Guide Posts
#Description #Description #Description
1Universal Serial Bus Port 6Parallel Port qS-Video Port
2Universal Serial Bus Port 7Game Port wTV-Out (Composite Video)
3Power (AC Adapter) Port 8Serial Port eAudio-Out
4Keyboard/Mouse Port 9External Monitor Port
5Keyboard/Mouse Port -10/100 TX Ethernet Port

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES SPECIFICATIONS 1
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Specifications
Physical and Environmental
*Applicable safety standards specify thermal limits for plastic surfaces.
Presario 1800XL Notebooks operate well within this temperature range.
Specification U.S. Metric
Height
Depth
Width
1.63 in.
12.99 in.
11.02 in.
4.14 cm
33.00 cm
28.00 cm
Weight
with 14.1-in. Display
with 15.0-in. Display
7.8 lb 3.54 kg
Battery Power Requirements
Nominal Operating
Maximum Average
Peak Operating
Li-ion 3.2 AHr
W @ 14.8 V
W @ 14.8 V
W @ 14.8 V
Li-ion 3.6 AHr
W @ 14.8 V
W @ 14.8 V
W @ 14.8 V
AC Power Requirements
Operating Voltage
Operating Current
Operating Frequency
Maximum Transient
100-240 V
0.8/0.4 A RMS
47-63 Hz (Meets IEC801-4 & -5)
1kV for 50 ns
Tempe rature*
Operating
Non-operating
41 - 131°F
-4 - 140°F
5 - 55 C
-20 - 60 C
Relative Humidity (noncondensing)
Operating
Non-Operating (wb = 38.7 C max)
8% - 90%
5% - 95%
Altitude
Operating
Non-operating
-1000 - 10000 ft
-1000 - 40000 ft
-300 - 3000 m
-300 - 12000 m
Shock
Operating
Non-operating
150 G / 2 ms (half sine)
700 G / 1 ms (half sine)
Vibration
Operating
Non-Operating
1 G
5 G

2 SPECIFICATIONS PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
System Interrupts
System DMA
Hardware
IRQ System Function Hardware IRQ System Function
IRQ 0 System timer IRQ 10 Available
IRQ 1 Standard 101/102-key or
Microsoft Natural Keyboard
IRQ 11 Intel®Pro/100S Mobile LAN
on Motherboard
IRQ 2 Programmable Interrupt
Controller
IRQ 11 Texas Instruments PCI-1410
CardBus Controller
IRQ 3 Lucent 56K V.90 PCI DF Modem IRQ 11 ACPI IRQ Holder for PCI IRQ
Steering
IRQ 3 ACPI IRQ Holder for PCI IRQ
Steering
IRQ 11 Intel®82371AB/EB PCI to
USB Universal Host Controller
IRQ 4 Communications Port (COM1) IRQ 11 ACPI IRQ Holder for PCI IRQ
Steering
IRQ 5 ESS SOLO-1 PCI AudioDrive IRQ 12 Synaptics PS/2 TouchPad
IRQ 5 ACPI IRQ Holder for PCI IRQ
Steering
IRQ 13 Numeric Data Processor
IRQ 5 RAGE Mobility AGP (English) IRQ 14 Intel®82371AB/EB PCI Bus
Master IDE Controller
IRQ 6 Standard Floppy Disk Controller IRQ 14 Primary IDE Controller (Dual
FIFO)
IRQ 7 Printer Port (LPT1) IRQ 15 Intel®82371AB/EB PCI Bus
Master IDE Controller
IRQ 8 System CMOS/Real Time Clock IRQ 15 Secondary IDE Controller
(Dual FIFO)
IRQ 9 SCI IRQ used by ACPI Bus
Hardware
DMA System Function
DMA 1 ESS SOLO-1 DOS Emulation
DMA 2 Standard Floppy Disk Controller
DMA 4 Direct Memory Access Controller

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES SPECIFICATIONS 3
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
System I/O Addresses
I/O Address System Function (Shipping Configuration)
0000h-000Fh Direct Memory Access Controller
0020h-0021h Programmable Interrupt Controller
0040h-0043h System Timer
0060h-0060h Standard 101/102-Key or Microsoft Natural
Keyboard
0061h-0061h System Speaker
0062h-0062h ACPI Embedded Controller
0064h-0064h Standard 101/102-Key or Microsoft Natural
Keyboard
0066h-0066h ACPI Embedded Controller
0070h-0071h System CMOS/Real Time Clock
0081h-008Fh Direct Memory Controller
00A0h-00A1h Programmable Interrupt Controller
00C0h-00DFh Direct Memory Access Controller
00F0h-00FEh Numeric Data Processor
0170h-0177h Intel®82371AB/EB PCI Bus Master IDE Controller
0170h-0177h Secondary IDE Controller (Dual FIFO)
01F0h-01F7h Intel®82371AB/EB PCI Bus Master IDE Controller
01F0h-01F7h Primary IDE Controller (Dual FIFO)
0200h-0203h Gameport Joystick
0220h-022Fh ESS SOLO-1 DOS Emulation
0330h-0331h ESS SOLO-1 DOS Emulation
0376h-0376h Secondary IDE Controller (Dual FIFO)
0376h-0376h Intel®82371AB/EB PCI Bus Master IDE Controller
0378h-037Fh Printer Port (LPT1)
0388h-038Bh ESS SOLO-1 DOS Emulation
03B0h-03BBh RAGE Mobility AGP (English)
03C0h-03DFh RAGE Mobilty AGP (English)
03F0h-03F5h Standard Floppy Disk Controller
03F6h-03F6h Intel®82371AB/EB PCI Bus Master IDE Controller

4 SPECIFICATIONS PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
03F6h-03F6h Primary IDE Controller (Dual FIFO)
03F7h-03F7h Standard Floppy Disk Controller
03F8h-03FFh Communications Port (COM1)
04D0h-04D1h Motherboard Resources
0CF8h-0CFFh PCI Bus
1000h-10FFh Lucent 56K V.90 PCI DF Modem
1400h-143Fh ESS SOLO-1 PCI AudioDrive
1440h-147Fh Intel®PRO/100 S Mobile LAN on Motherboard
1480h-149Fh Intel®82371AB/EB PCI to USB Universal Host
Controller
14A0h-14A7h Primary IDE Controller (Dual FIFO)
14A0h-14AFh Intel®82371AB/EB PCI Bus Master IDE Controller
14A8h-14AFh Secondary IDE Controller (Dual FIFO)
14B0h-14BFh ESS SOLO-1 PCI AudioDrive
14C0h-14CFh ESS SOLO-1 PCI AudioDrive
14D0h-14D7h Lucent 56K V.90 PCI DF Modem
14D8h-14DBh ESS SOLO-1 PCI AudioDrive
14DCh-14DFh ESS SOLO-1 PCI AudioDrive
2180h-218Fh Motherboard Resources
8000h-803Fh Motherboard Resources
9000h-9FFFh Intel®82443BX Pentium®II Processor to AGP
Controller
9000h-90FFh RAGE Mobility AGP (English)
I/O Address System Function (Shipping Configuration)

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES SPECIFICATIONS 5
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
System Memory Catalog
Memory Expansion
Memory Address System Function
000A0000h-000AFFFFh RAGE Mobility-M1 AGP (English)
000B0000h-000BFFFFh RAGE Mobility-M1 AGP (English)
000C0000h-000CFFFFh RAGE Mobility-M1 AGP (English)
04000000h-04000FFFh Texas Instruments PCI-1410 CardBus Controller
04001000h-04001FFFh Intel®PRO/100 S Mobile LAN on Motherboard
04100000h-F041FFFFh Intel®PRO/100 S Mobile LAN on Motherboard
F4101000h-F41010FFh Lucent 56K V.90 PCI DF Modem
F4200000h-F4200FFFh RAGE Mobility-M3 AGP (English)
F4200000h-F5FFFFFFh Intel®82443BX Pentium®ll Processor to AGP Controller
F4220000h-F423FFFFh RAGE Mobility AGP (English)
F5000000h-F5FFFFFFh RAGE Mobility AGP (English)
F8000000h-FBFFFFFFh Intel®82443BX Pentium®ll Processor to PCI bridge
FFF80000h-FFFFFFFFh Motherboard Resources
System
Memory
Expansion
Board Memory
Total
Memory
64 MB None 64 MB
64 MB 32 MB 96 MB
64 MB 64 MB 128 MB
64 MB 128 MB 192 MB
64 MB 256 MB 320 MB