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Presario 1279

Compaq Presario 1246, Presario 1277, Presario 1278, Presario 1279 Maintenance & Service Manual

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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1277, 1278, and 1279
Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Click here to download this Maintenance and Service Guide
(MSG) to your hard drive.
Welcome to the Maintenance & Service Guide (MSG). This online guide is designed to serve the needs of those whose job it is to repair Compaq products. The Notice contains the copyright and trademark
information. The
Preface shows symbol conventions,
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Technician Notes, and Serial Number locations on the unit.
This MSG will be periodically maintained and updated online as needed.
For content comments or questions, contact the Editor.
To report a technical problem, contact your Regional Support Center or IM Help Center.
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
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.
1999 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq, Presario Series Registered U. S. Patent and Trademark Office.
Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation. Windows 98 is a trademark 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 Series Portable Computer
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First Edition (October 1999)
Compaq Computer Corporation
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"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279
United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations |
Preface
This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing Compaq Presario Series Portable Computers.
Compaq Computer Corporation reserves the right to make changes to the Compaq Presario Series Portable Computers without notice.
Symbols
The following words and symbols mark special messages throughout this guide.
WARNING.
WARNING: Text set off in this manner indicates that failure to follow directions in the warning could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of data.
IMPORTANT:
Text set off in this manner presents clarifying information or specific instructions.
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NOTE:
Text set off in this manner presents commentary, sidelights, or interesting points of information.
Technician Notes
WARNING.
WARNING: 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 to make 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 warranty.
Serial Number
When requesting information or ordering spare parts, you should provide the computer serial number to Compaq. The serial number is located on the bottom of the computer.
Locating Additional Information
The following documentation is available to support this product:
● Compaq Presario Series Portable Computer documentation set
● Introducing Windows 98 Guide
● Service Training Guides
● Compaq Service Advisories and Bulletins
● Compaq QuickFind
● Compaq Service Quick Reference Guide
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Product Description
Models and Features
Controls and Lights
Front Bezel Lights
Front Bezel Buttons
Left Side Components
Right Side Components
Bottom of Unit
Rear Connectors
Power Management for Windows 98
The Compaq Presario Series Portable Computer is
a continuation of the new generation of multimedia portable computers with an innovative and integrated design, outstanding audio and video, advanced core features, and attractive styling. This full-function, AMD-K6II­based portable computer allows full desktop
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functionality.
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting
Preliminary Steps
Clearing the Power-On Password
Power-On Self Test (POST)
Compaq Diagnostics
Diagnostic Error Codes
Troubleshooting Without Diagnostics
Solving Minor Problems
Contacting Compaq Support
This section covers troubleshooting information for the Compaq Presario Series Portable Computers. The basic steps in troubleshooting include:
1. Follow the Preliminary Steps.
2. Run the Power-On Self-Test (POST).
3. Follow the recommended actions described in the diagnostic tables, if you are unable to run POST or if POST displays an error message.
When following the recommended actions in the Sections on POST and Diagnostic Error Codes perform
them in the order listed. Rerun POST after each recommended action until the problem is solved and no error message occurs. Once the problem is solved, do not complete the remaining recommended actions.
NOTE:
If the problem is intermittent, check the computer several times to verify that the problem is solved.
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
System Unit Boards Display
Assembly Mass Storage
Devices Miscellaneous
Cable Kit Miscellaneous
Hardware Kit Miscellaneous
Plastics Kit Miscellaneous
Parts Documentation
and Software
This section provides a breakdown for, and identifies the spare parts ordering number associated with, each item(s) for the Compaq Presario Series Portable Computers.
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removal and Replacement Procedures
This section explains the removal and replacement procedures for the computer.
Serial Number Location
Disassembly
Sequence
Electrostatic Discharge
Service Considerations
Cables and Connectors
Preparing the Computer for Disassembly
Battery Pack Palmrest
Cover with Touch Pad
Keyboard Heatspreader
Report the computer serial number to Compaq when requesting information or ordering spare parts.
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Processor Hard Drive CD Drive Battery
Charger Board Modem Display Panel
Assembly Upper CPU
Cover Speaker
Assembly Diskette Drive Fan Assembly System Board Dip Switch
Settings Memory
Module
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Specifications
This chapter covers the following specifications of Compaq Presario Series Portable Computers:
● Physical and environmental
● System Interrupts
● System DMA
● System I/O Address
● System Memory Catalog
● Display
● Memory expansion
● Diskette drive
● Hard drive
● CD drive
● Battery pack
● Modem
Physical and Environmental
Computer Specifications
U.S. Metric
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Dimensions
(models with 12.1" display)
Height
Depth Width
(model 1277 with 13.0" display)
Height
Depth Width
1.97 in
12.20 in
10.12 in
1.97 in
12.33
10.12
5.0 cm
31.3 cm
25.7 cm
5.0 cm
31.3 cm
25.7
Weight
Model 1246 Model 1247 Model 1277 Model 1278 Model 1279
7.19lbs
7.19lbs
7.19lbs
7.19 lbs
7.36 lbs
3260 g 3260 g 3260 g 3260 g 3340 g
Stand-Alone (Battery Pack) Power Requirements Nominal Operating Voltage
Maximum Operating Power Peak Operating Power
NiMH
W @ 9.6 V W @ 9.6 V W @ 9.6 V
Li-ion
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 IEC 801-4 and IEC801-5
1kV for 50 ns
Temperature
Operating
41o to 95o F 5o to 35o C
Nonoperating
-4o to 140o F -20o to 60o C
Relative Humidity (Non-condensing)
Operating 10 to 90%
35o C to 90%
Nonoperating (tw = 38.7oC max)
5 to 95%
60o C to 95%
Altitude
Operating 0 to 10,000 ft 0 to 3.15 km Nonoperating 0 to 30,000 ft 0 to 10.14 km
Shock
Operating 10 G, 11 ms, half sine Non operating 240 G, 2 ms, half sine
Vibration
Operating 0.55 G, 0.25 Oct/Min
sweep rate
Nonoperating 1.5 G, 0.25 Oct/Min
sweep rate
NOTE:
Applicable product safety standards specify thermal limits for plastic surfaces. Compaq Presario 1200 Series Portable Computers operate well within this range of temperatures.
System Interrupts
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System Interrupts
Hardware IRQ System Function
IRQ0
System Timer
IRQ1 Standard 101/102-Key or Microsoft Natural Keyboard IRQ2 Programmable interrupt controller IRQ3 IRQ Holder for PCI Steering IRQ3 ALi PCI to USB Open Host Controller IRQ4 Communications Port (COM1) IRQ5 IRQ Holder for PCI Steering IRQ5 PCI Fast Ethernet DEC 21143 Based Adapter IRQ5 ESS SOLO-1 PCI AudioDrive IRQ5 IRQ Holder for PCI Steering IRQ6 Standard Floppy Disk Controller IRQ7 Printer Port (LPT1) IRQ8 System CMOS / real-time clock IRQ9 RAGE LT PRO AGP 2X (English) IRQ9 IRQ Holder for PCI Steering IRQ10 Texas Instruments PCI-1211 CardBus Controller IRQ10 IRQ Holder for PCI Steering IRQ10
Lucent 56K V.90 PCI DF Modem
IRQ12 Synaptics PS/2 TouchPad
IRQ13 Numeric data processor IRQ14
ALi M5229 PCI Bus Master IDE Controller
IRQ14 Primary IDE controller (dual fifo) IRQ15
ALi M5229 PCI Bus Master IDE Controller
IRQ15 Secondary IDE controller (dual fifo)
System DMA
System DMA
Hardware DMA System Function
0
(free)
1 ESS SOLO-1 DOS Emulation 2 Standard Floppy Disk Controller 3 (free) 4 Direct memory access controller 5 (free)
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System I/O Address
System I/O Address
I/O Address (Hex) System Function (Shipping Configuration)
0000 - 000Fh Direct memory access controller 0020h - 0021h Programmable interrupt controller 0040h - 0043h System timer
0060h - x0060h Standard 101/102-Key or Microsoft Natural Keyboard 0061h - x0061h System speaker 0064h - x0064h Standard 101/102-Key or Microsoft Natural Keyboard
0070h - 0071h System CMOS/real time clock 0080h - 0080h Motherboard resources 0081h - 008Fh Direct memory access controller 0092h - 0092h Motherboard resources 00A0h - 00A1h Programmable interrupt controller
00B1h - 00B3h Motherboard Resources
00C0h - 00DFh Direct memory access controller 00EAh - 00EBh Motherboard resources
00F0h - 00FFh Numeric data processor
0100h - 010Fh Motherboard resources
0170h - 0177h
ALi M5229 PCI Bus Master IDE Controller
0170h - 0177h Secondary IDE controller (dual fifo)
01F0h - 01F7h ALi M5229 PCI Bus Master IDE Controller
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 ALi M5229 PCI Bus Master IDE Controller 0378h - 037Fh Printer Port (Ltp1) 0388h - 038Bh ESS SOLO-1 DOS Emulation
03B0h - 03BBh
RAGE LT PRO AGP 2X (English)
03C0h - 03DFh
RAGE LT PRO AGP 2X (English)
03F0h - 03F5h Standard Floppy Disk Controller 03F6h - 03F6h
Primary IDE controller (dual fifo)
03F6h - 03F6h ALi M5229 PCI Bus Master IDE Controller 03F7h - 03Fh7 Standard Floppy Disk Controller 03F8h - 03FFh Communication Port (COM1)
040Bh - 040Bh Motherboard Resources
040D0h - 04D1h Motherboard Resources
04D6h - 04D6h Motherboard Resources
0CF8h - 0CFFh PCI Bus
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1000h - 103Fh Motherboard Resources
1040h - 105Fh Motherboard Resources
1060h - 106Fh ESS SOLO-1 PCI AudioDrive
1070h - 107Fh ESS SOLO-1 PCI AudioDrive
1080h - 10FFh PCI Fast Ethernet DEC 21143 Based Adapter
1400h - 14FFh Lucent 56K V.90 PCI DF Modem
1800h - 183Fh ESS SOLO-1 PCI AudioDrive
1840h - 1847h
Primary IDE controller (dual fifo)
1840h - 184Fh
ALi M5229 PCI Bus Master IDE Controller
1848h - 184Fh
Secondary IDE controller (dual fifo)
1850h - 1853h ESS SOLO-1 PCI AudioDrive
1854h - 1857h ESS SOLO-1 PCI AudioDrive
1858h - 185Fh Lucent 56K V.90 PCI DF Modem 2000h - 2FFFh PCI standard PCI-to-PCI bridge
2000h - 20FFh
RAGE LT PRO AGP 2X (English)
System Memory Catalog
System Memory Catalog
Memory Address System Function
00000000h - 0009FFFFh System board extension for PnP BIOS 000A0000h - 000AFFFFh RAGE LT PRO AGP 2X (English) 000B0000h - 000BFFFFh RAGE LT PRO AGP 2X (English) 000C0000h - 000CBFFFh RAGE LT PRO AGP 2X (English) 000DC000h - 000DFFFFh
Motherboard Resources
000E0000h - 000FFFFFh System board extension for PnP BIOS 00100000h - 01FFFFFFh System board extension for PnP BIOS 0C000000h - 0C000FFFh Texas Instruments PCI-1211 CardBus Controller E0000000h - E3FFFFFFh
ALi M1541 AGP System Controller
FC000000h - FCFFFFFFh
ALi PCI to USB Open Host Controller
FC001000h - FC0010FFh
Lucent 56K V.90 PCI DF Modem
FC001400h - FC0017FFh
PCI Fast Ethernet DEC 21143 Based Adapter
FC100000h - FDFFFFFFh
PCI standard PCI-to-PCI bridge
FC100000h - FC100FFFh RAGE LT PRO AGP 2X (English)
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FC120000h - FC13FFFFh RAGE LT PRO AGP 2X (English) FD000000h - FDFFFFFFh RAGE LT PRO AGP 2X (English) FFFC0000h - FFFFFFFFh Motherboard Resources
Display
12.1" (Diagonal) HPA Display
U.S. Metric
Active Area
Height
Width
9.56"
7.17"
245 mm
183.8 mm
Overall Dimensions
Width
Height
Depth
7.9"
10.7" .31"
202.5 mm
275.0 mm
8.0 mm
Weight
18.2 oz. 520 g
Contrast Ratio
40:1
Brightness
70 nits. Avg.
Total Power Consumption
5.4 W (max)
13.0" (Diagonal) HPA Display
U.S. Metric
Active Area
Height
Width
10.39"
7.79"
263.98 mm
197.98 mm
Overall Dimensions
Width
Height
Depth
11.6"
8.58" .31"
295.0 mm
218.0 mm
8.0 mm
Weight
20.3 oz. 580 g
Contrast Ratio
50:1
Brightness
100 nits. Avg.
Total Power Consumption
5.4 W (max)
Memory Expansion
Base System Memory Expansion Board Memory Total Memory
32-MB
32-MB 64-MB
32-MB
64-MB 96-MB
32-MB
128-MB 160-MB
64-MB
32-MB 96-MB
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64-MB
64-MB 128-MB
64-MB
128-MB 192-MB
Diskette Drive
Diskette Drive
Diskette Size Light Height
3.5 in None .5" / 1.27 cm
Bytes per Sector:
Sectors per Track High Density Low Density
512 18 (1.44-MB) / 15 (1.2-MB)
9
Tracks per Side
High Density Low Density
80 (1.44-MB) / 80 (1.2-MB) 80
Access Times
Track-to-Track (high/low) Average (ms) Setting Time (ms) Latency Average
3 ms/6 ms 94 ms/174 ms 15 ms 100
Number of Read/Write Heads
2
Hard Drive
Hard Drives
4.3-GB 4.8-GB
Capacity Per Drive
4.3-GB 4.3-GB
Drive Type
2.5" 2.5"
Logical Configuration
Cylinders Heads Sectors per track Bytes per sector
8647
6
240-250
512
11648
4
330 (max.)
512
Seek Times (Typical, Including settling in ms) Single Track
Average Maximum
Full Stroke
2.5 ms
---
12
---
2.5 ms
5.5 max (read)
6.5 max (write) 16 max (read)
17 max (write)
30 max (read)
31 max (write)
Transfer Rate
At interface
33.3 MB/s 33.3 MB/s
Sector Interleave
1:1 1:1
Buffer Size
512 KB 512 KB
CD Drive
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CD Drive
24x CD Drive
Applicable Disk
CD-DA, CD-ROM, CD-ROM XA, CD-1, Photo CD (multisession), Video CD, CD­R, CD-Extra (CD+), CD-G, CD-RW
Center Hole Diameter
.6" / 15 mm
Disc Diameter
12 cm, 8 cm
Disc Thickness
1.2 mm
Track Pitch
1.6 um
Access Time
(typical, including setting)
110 ms
Audio Output Level
Line out Headphone
+/- 0.27 Vrms none
Cache Buffer
128 KB
Data Transfer Rate
(typical, including setting)
3600 KB/s 150 KB/s
16.66 MB/sec
Startup Time
< 8 sec
Stop time
< 4 sec
Battery Pack
Battery Pack
Lithium Ion (Li ion) Nickel Metal Hydride
(NiMH)
Dimensions
Height Length Width
.8 in (20.3 mm)
5.7 in (145 mm)
3.1 in (78.7 mm)
.8 in (20.3 mm)
5.7 in (145 mm)
3.1 in (78.7 mm)
Weight
0.90 Ib (408.2 g)
1.01 lb (458.1 g)
Battery Pack Operating Time
3:00 hr
Energy
Voltage Amp-hour capacity Watt-hour capacity
14.8 V
3.0 Ah
44.4 Wh
9.6 V
4.5 Ah
43.2 Wh
Environmental Requirements
Operating Temperature
Non-operating Temperature
Charging Temperature
32o F to 113o F
(0o to 45o C)
-4
o
F to 140o F
(-20o to 60o C) 40
o
F to 113o F
(5
o
C to 45o C)
32o F to 113o F
(0o to 45o C)
-4
o
F to 140o F
(-20o to 60o C) 40
o
F to 113o F
(5
o
C to 45o C)
Modem
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Modem
Compliance
ITU v.90~6 standard Full ITU-T V.34 compliance Full compliance with: V.21, V.22, V.22bis, V.23, V.32, V.32bis, Bell 103, Bell 212A
Data Compression
V.42bis/MNP 5
Fax Modulation
V. 17 V. 21 (Group III Compatible) V.29 V.27Ter
Command Set
Hayes AT Class 1 Fax
Cable
6 Ft. RJ-11 telephone cable
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COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Connector Pin Assignments
This section provides connector pin assignment tables for Compaq Presario Series Portable Computers. For more information on connectors, refer to the section on
Rear Connectors.
NOTE: The signals in all tables of this appendix are considered active high unless otherwise indicated by an asterisk (*).
Parallel Connector
Pin Signal Pin Signal
1 Strobe* 10 Acknowledge* 2 Data Bit 0 11 Busy 3 Data Bit 1 12 Paper Out 4 Data Bit 2 13 Select 5 Data Bit 3 14 Auto Linefeed* 6 Data Bit 4 15 Error* 7 Data Bit 5 16 Initialize Printer*
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8 Data Bit 6 17 Select In* 9 Data Bit 7 18-25 Signal Ground * = Active low
Serial Connector
Connector Pin Signal
1
2
3
4
5
6
7
8
9
Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Ready to Send
Clear to Send
Ring Indicator
Keyboard/Mouse
Connector Pin Signal
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1
2
3
4
5
6
Data 1
Data 2
Ground
+5 V
Clock 1
Clock 2
External VGA Monitor
Connector Pin Signal
1
2
3
4
5
6
7
8
9
10
11
12
Red Analog
Green Analog
Blue Analog
Not connected
Ground
Ground Analog
Ground Analog
Ground Analog
Not connected
Ground
Monitor Detect
DDC2B Data
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13
14
15
Horizontal Sync
Vertical Sync
DDC2B Clock
Universal Serial Bus
Connector Pin Signal
1
2
3
4
+5V Data ­Data + Ground
Modem
Connector Pin Signal
1
2
3
4
5
6
Unused
Unused
Tip
Ring
Unused
Unused
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Battery Pack Operations
This section covers the following information concerning battery pack operating time:
● Increasing battery pack operating time
● Minimizing the energy required
● Maximizing the energy stored
● Conditioning a battery pack
● Disposing of a used battery pack
Increasing Battery Pack Operating Time
Battery pack operating time differs depending on several variables. To avoid unnecessary replacement, consider the following variables when determining how long a charged battery pack should last:
● Power management settings
● Hardware configuration
● Software applications
● Installed options
● Display brightness
● Hard drive usage
● Changes in operating temperature
● Type and number of installed PC Cards
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NOTE:
The power consumption requirements for PC Cards vary widely. Some cards drain the battery pack very rapidly.
Battery pack operating time can be increased by as much as 50 percent by controlling the energy required by the computer and the energy stored in the battery pack.
Minimizing the Energy Required
To minimize the energy required by the computer, follow these steps:
● Set the power conservation levels in the Power Management utility to Maximum.
● Customize the timeout value to work more efficiently with the applications.
The amount of battery life depends on the values selected.
Maximizing the Energy Stored
To maximize the energy stored in the battery pack, follow these guidelines:
● Condition the battery pack at least every 30 days to improve overall battery
performance.
● Keep a battery pack in the computer when using it with AC power to supply the
battery pack with a constant trickle charge.
● Store the battery pack in a cool, dry place when not in use.
Conditioning a Battery Pack
CAUTION.
CAUTION: To avoid a loss of data, ensure that all data is saved before discharging a battery pack.
To condition a battery pack, complete the following steps:
1. Plug in the AC adapter and allow the battery to charge until the LED light on the display stops blinking. Your battery gauge may read 100 percent for a period of time before LED light on the display stops blinking. Do not unplug the AC adapter until the arrow disappears.
2. Unplug the AC adapter and allow the battery to drain until the computer reaches hibernation and turns itself off. Do not plug in the AC adapter during this process or you will need to restart with Step No. 1. You may use the computer while the battery is draining.
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3. Your battery is reconditioned.
4. Plug in the AC adapter and begin using the computer.
The table below shows the approximate battery pack charge times.
Approximate Battery Charge Time
Computer On Line Off Line
NiMH Battery Pack 4.0 hours premature termination 2:00 hrs
Li ion Battery Pack 4.5 hours premature termination 2:50 hrs
Disposing of a Used Battery Pack
In the interest of safeguarding our environment, Compaq Computer Corporation recommends that nickel metal hydride (NiMH) and lithium ion (Li ion) battery packs be recycled. Battery packs should be handled in accordance with country, state, province, or local regulations.
CAUTION.
CAUTION: Never attempt to open or service a battery pack. Opening a battery pack not only damages the pack and makes it unusable, but also expose
s potentially harmful battery components.
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COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Product Description
Models and Features
Models and Features
Controls and Lights
Front Bezel Lights
Front Bezel Buttons
Left Side Components
Right Side Components
Bottom of Unit
Rear Connectors
Compaq Presario Series Portable Computer Models
Model 1246 Model 1247
Display
12.1" HPA 12.1" HPA
Processor
AMD-K6II MMX 400-Mhz AMD-K6II MMX 400-Mhz
Hard Drive
4.3-GB 4.3-GB
CD Drive
24x CD-ROM 24x CD-ROM
Modem
56.0 Kbps PCI data/fax 56.0 Kbps PCI data/fax
System Memory
32-MB 32-MB
Battery
3800 MAH NiMH 3800 MAH NiMH
Model 1277 Model 1278
Display
13.0" HPA 12.1" HPA
Processor
AMD-K6II MMX 400-Mhz (or) AMD-K6II MMX 433-Mhz
AMD-K6II MMX 433-Mhz
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Power Management for Windows 98
Hard Drive
4.8-GB 4.8-GB
CD Drive
24x CD-ROM 24x CD-ROM
Modem
56.0 Kbps PCI data/fax 56.0 Kbps PCI data/fax
System Memory
64-MB 64-MB
Battery
3200 MAH sLION 3200 MAH sLION
Model 1279
Display
12.1" HPA
Processor
AMD-K6II MMX 433-Mhz
Hard Drive
4.8-GB
CD Drive
24x CD-ROM
Modem
56.0 Kbps PCI data/fax
System Memory
64-MB
Battery
3200 MAH sLION
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Product Description
Controls and Lights
Models and Features
Controls and Lights
Front Bezel Lights
Front Bezel Buttons
Left Side Components
Right Side Components
Bottom of Unit
Rear Connectors
Power Management for Windows 98
1. Display
2. Power (On/Off) Button
3. Keyboard
4. Touch Pad
5. Touch Pad Button (Left)
6. Headphone Jack
7. Microphone Jack
8. Touch Pad Button (Right)
9. Integrated Speakers and Ports
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Product Description
Front Bezel Lights
Models and Features
Controls and Lights
Front Bezel Lights
Front Bezel Buttons
Left Side Components
Right Side Components
Bottom of Unit
Rear Connectors
1. Power Light
2. Battery Charge Light
3. Power Cord Light
4. Num Lock Light
5. Cap Lock Light
6. Scroll Lock Light
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Power Management for Windows 98
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Product Description
Front Bezel Buttons
Models and Features
Controls and Lights
Front Bezel Lights
Front Bezel Buttons
Left Side Components
Right Side Components
Bottom of Unit
Rear Connectors
1. Instant Internet Access Button
2. Instant Search Button
3. Volume Down Button
4. Scroll Up/Down Button
5. Volume Up Button
6. Secure E­Commerce Button (or favorite Web site)
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Power Management for Windows 98
7. Instant E-Mail Button
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Product Description
Left Side Components
Models and Features
Controls and Lights
Front Bezel Lights
Front Bezel Buttons
Left Side Components
Right Side Components
Bottom of Unit
Rear Connectors
Power Management for Windows 98
1. PC Card Eject Lever
2. PC Card Slot
3. Diskette Drive Slot
4. Diskette Eject Button
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Product Description
Right Side Components
Models and Features
Controls and Lights
Front Bezel Lights
Front Bezel Buttons
Left Side Components
Right Side Components
Bottom of Unit
Rear Connectors
Power Management for Windows 98
1. Battery Compartment
2. CD Drive Eject Button
3. CD Drive Manual Eject Hole
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Product Description
Models and Features
Controls and Lights Front Bezel Lights Front Bezel Buttons Left Side
Components Right Side
Components Bottom of Unit
Rear Connectors Power Management
for Windows 98
Bottom of Unit
1. Memory Compartment Door
2. Stand Feet
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Product Description
Rear Connectors
Models and Features
Controls and Lights
Front Bezel Lights
Front Bezel Buttons
Left Side Components
Right Side Components
Bottom of Unit
Rear Connectors
1. AC Adapter
2. Universal Serial Bus
3. Security Slot
4. Serial Port
5. External Monitor Port
6. Parallel Printer Port
7. Keyboard/ Mouse Port
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Power Management for Windows 98
8. Modem Jack
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Power Management for Windows 98
The following power management features are available for conserving AC power and extending battery operating time:
● Power Management Settings
● Sleep
● Hibernation
● Battery operating time
● Rebooting After a Lockup
● Servicing Your Computer - Full Off Mode
Pow
er Management Settings
Depending on your patterns of computer use, you can set different levels of power management. These different power management levels can be activated based on the amount of time passed since the last system activity. System activity examples include keyboard or mouse movement, CD playback (while under program control that monitors Sleep), and modem use.
You can select different conditions or power schemes through Power Management.The optional settings are Home/ Office Desk, Portable/ Laptop, and Always On. From the default settings, you can change the following settings:
● the System goes to Sleep (Standby) mode
● the screen times out and goes blank
● the hard drive spins down
Each of these system components goes to sleep after the selected or default periods of inactivity. (The setting for hard drive must be less than, or equal to, the setting for System.)
IMPORTANT:
If you're on a network, it's recommended that you set System Standby to Never.
There are five categories of power management settings under the Control Panel. The default setting for each feature is listed below in the tables.
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Power Management Properties
Tab: Power Schemes: Plugged in Running on Batteries Always on System Standby: Never 15 minutes Turn OFF Monitor
After 3 hours Never
Always on System Standby: After 15 minutes After 10 minutes
Power Management Properties
Tab: Alarms:
Low Battery Alarm: 10% Critical Battery Alarm: 0% Alarm Actions: X Display Message Notification
Text Action No Action
Power Management Properties
Tab: Power Meter:
Default
Tab: Advanced:
Default
Display Properties
Tab: Monitor: Laptop Display (Maximum resolution according to unit display size)
Sleep
You can select Sleep mode instead of turning off the computer when you have finished using it. This allows the computer to wake up faster than turning it completely off and saves power over the active (On) mode. Compaq Presario Series Notebook computers have two levels of sleep-- Hibernation and Sleep.
Hibernation - by pushing the power button once, your computer performs a save to disk followed by a shut down of the computer into Off mode.
Sleep - is a low power mode, also referred to as Standby mode. While in Sleep mode, your computer maintains system information and open files. Unsaved information is lost if you turn off your system prior to system wake­up, or if you lose power while using the AC adapter.
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CAUTION: While in Sleep mode, your computer maintains system information and
open files. Unsaved information is lost if you turn off your system prior to system wake-up, or if you lose power while using the AC adapter.
Hibernation Mode
Hibernation helps conserve battery life and protects your data. Hibernation can be a routine power-saving event, or can be the result of a low-battery condition. As it enters Hibernation your computer displays a progress screen, as it automatically saves the machine state before it shuts down and turns itself off. Your computer automatically goes into Hibernation when the battery has little power left, or when the system (operating on battery power) has been in Sleep mode for more than an hour. You can also manually initiate Hibernation by pressing the power button once while the system is active. To restore the computer's previous state, simply press the power button once again. While waking up, the computer displays a progress screen.
The following table shows the conditions and indicators for getting in and out of the various power management modes - Sleep, Hibernation, and Off.
Mode To Initiate To End Indicators
Sleep
Manual keys combination- Fn+F4 Press any key Flashing green Power LED
Time Out Default 15 minutes. If on Battery power (system will not go to Sleep if on AC power)
Hibernate
Manual - Press Power button once Press Power
button once
No Power LED, blank screen
Time Out Default If low battery or after 1 hour of sleep (system will not Hibernate if on AC power)
Off
Perform normal Windows shutdown via the start button, or press and hold down the power button for 4 seconds
Press Power button once
No Power LED, blank screen
Servicing Your Computer - Full Off Mode
If you need to install or replace components in your system, you must turn the computer off completely. Follow the instructions above for properly placing the computer into Off mode. Then, unplug the computer from the AC outlet and remove the battery (see battery section for
instruction for removing the battery pack).
Rebooting After a Lockup
Occasionally you may encounter a frozen keyboard or a locked screen. To reboot your computer (as if from
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a cold start) press and hold down the Power Button for at least four seconds, which will cause a manual shutdown. Then, restart it with a single press of the Power Button. If it still doesn't recover, do the following:
1. Press the Power Button and hold it for four seconds to shut it down.
2. Remove the battery or unplug the AC power for at least 30 seconds.
3. Reinsert the battery or reconnect AC power.
4. Press the Power Button once to reboot.
Battery Operating Time
Battery operating time is affected by variables, such as the following:
● Power conservation settings
● Hardware configuration
● Software applications
● Installed options
● Display brightness
● Hard drive usage
● Power button
● Changes in operating temperature
● Type and number of installed PC Cards
For more information on increasing battery pack operating time, conditioning the battery pack, and disposing of a used battery pack, refer to the Battery Pack Operations.
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting
Preliminary Steps
Preliminary Steps
Clearing the Power-On Password
Power-On Self Test (POST)
Compaq Diagnostics
Diagnostic Error Codes
Troubleshooting Without Diagnostics
Solving Minor Problems
Contacting Compaq Support
Before running POST, complete the following preliminary steps:
1. If a power-on password has been established, type the password and press the Enter key. If the password is not known,
clear the
password .
2. Run Computer Checkup.
3. Turn off the computer and its external devices.
4. Disconnect any external devices that you do not want to test. Do not disconnect the printer if you want to test it or use it to log error messages.
IMPORTANT:
IMPORTANT: If the problem only occurs when an external device
is connected to the computer, the problem may be related to the external device or its cable. Verify this by running POST with and without the external device connected.
5. Install loopback plugs in the serial and parallel connectors if you would like to test these ports.
6. Ensure the hard drive is installed in the computer.
7. Ensure that the battery pack is inserted in the computer and the computer is connected to an external AC power source.
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When the preliminary steps are completed, you are ready to run
POST.
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting
Clearing the Power-on Password
Clearing the power-on password requires removing all Setup attributes that are programmed in the CMOS.
The RTC battery
is
located on the system board.
If the password is not known, clear it by performing the following steps:
1. Turn off the computer.
2. Disconnect the power cord.
3. Remove the battery
pack.
4. Remove the Palmrest
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Cover with Touch Pad.
5. Remove the
heatspreader.
6. Remove the keyboard.
7. Remove RTC battery for 30 seconds and replace it.
8. Reassemble the computer.
9. Turn on the computer to verify that the power-on password has been cleared. If it has not been cleared, repeat Steps 1 through 9.
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting
Power-On Self Test (POST)
Running POST
To run POST, turn off the computer. Then turn on the computer.
If POST does not detect any errors, the computer will not beep. This indicates successful completion of POST test. POST has run successfully and boots from the hard drive (or from a bootable diskette if one is installed in the diskette drive).
If POST detects errors, the errors are indicated by screen and/or audible messages. Refer to "Power-On Self-Test (POST) Codes" in the tables for a list of POST codes and their relevant descriptions.
NOTE:
If the system is not functioning well enough to run POST, or if the display is not functioning well enough to show POST error messages, refer to the Troubleshooting tables.
NOTE:
The following routines are sorted by their test point numbers assigned in the BIOS code. Their actual orders, as executed during POST, can be quite different.
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Code Beeps POST Routine Description
02h Verify Real Mode 03h Disable Non-Maskable Interrupt (NM) 04h Get CPU type 06h Initialize system hardware 08h Initialize chipset with Initial POST values 09h Set IN POST flag 0Ah Initialize CPU registers 0Bh Enable CPU cache 0Ch Initialize caches to initial POST values 0Eh Initialize I/O component 0Fh Initialize the local bus IDE 10h Initialize Power Management 11h Load alternate registers with initial POST values 12h Restore CPU control word during warm boost 13h Initialize PCI Bus Mastering devices 14h Initialize keyboard controller 16h
1-2-2-3
BIOS ROM Checksum 17h Initialize cache before memory autosize 18h 8254 timer initialization 1Ah 8237 DMA controller initialization 1Ch Reset Programmable Interrupt Controller 20h
1-3-1-1
Test DRAM refresh 22h
1-3-1-3
Test 8742 Keyboard Controller 24h Set ES segment register to 4 GB
26h Enable A20 line 28h Autosize DRAM 29h Initialize POST Memory Manager 2Ah Clear 512 KB base RAM
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2Ch
1-3-4-2
RAM failure on address line xxxx*
2Eh
1-3-4-3
RAM failure on data bits xxxx* of low byte of memory bus
2Fh
Enable cache before system BIOS shadow
30th
1-4-1-1
RAM failure on data bits xxxx*of high byte memory bus
32h
Test CPU bus-clock frequency
33h
Initialize Phoenix Dispatch Manager
36h
Warm start shut down
38h
Shadow system BIOS ROM
3Ah
Autosize cache
3Ch
Advanced configuration of chipset registers
3Dh
Load alternate registers with CMOS values
42h
Initialize interrupt vectors
45h
POST device initialization
46h
2-1-2-3
Check ROM copyright notice
48h
Check Video configuration against CMOS
49h
Initialize PCI bus and devices
4Ah
Initialize all video adapters in system
4Bh
QuietBoot start (optional)
4Ch
Shadow video BIOS ROM
4Eh
Display BIOS copyright notice
50Eh
Display CPU type and speed
51h
Initialize EISA board
52h
Test keyboard
54h
Set key click if enabled
58h
2-2-3-1
Test for unexpected interrupts
59h
Initialize POST display service
5Ah
Display prompt "Press F2 to enter SetUP"
5Bh
Disable CPU cache
5Ch
Test RAM between 512 and 640 KB
60h
Test extended memory
62h
Test extended memory address lines
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64h
Jump to UserPatchI
66h
Configure advanced cache registers
67h
Initialize Multi Processor APIC
68h
Enable external and CPU cache
69h
Setup System Management Mode (SMM) area
6Ah
Display external L2 cache size
6Bh
Load custom defaults (optional)
6Ch
Display shadow-area message
6Eh
Display possible high address for UMB recovery
70h
Display error messages
72h
Check for configuration errors
76h
Check for keyboard errors
7Ch
Set up hardware interrupt vectors
7Eh
Initialize coprocessor if present
80h
Disable onboard Super I/O ports and IRQs
81h
Late POST device initialization
82h
Detect and install external RS232 ports
83h
Configure non-MCD IDE controllers
84h
Detect and install external parallel ports
85h
Initialize PC-compatible PnP ISA devices
86h
Reinitialize onboard I/O ports
87h
Configure Motherboard Configurable Devices (optional)
88h
Initialize BIOS Data Area
89h
Enable Non-Maskable Interrupts (NMIs)
8Ah
Initialize Extended BIOS Data Area
8Bh
Test and initialize PS/2 mouse
8Ch
Initialize floppy controller
81h
Determine number of ATA drives (optional)
90h
Initialize hard disk controllers
91h
Initialize local-bus hard disk controllers
92h
Jump to UserPatch2
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93h
Build MPTABLE for multi-processor boards
95h
Install CD ROM for boot
96h
Clear huge ES segment register
97h
Fixup Multi Processor table
98h
1-2
Search for option ROMs. One long, two short beeps on checksum
failure
99h
Check for SMART drive (optional)
9Ah
Shadow option ROMs
9Ch
Set up Power Management
9Dh
Initialize security engine (optional)
9Eh
Enable hardware interrupts
9Fh
Determine number of ATA and SCSI drives
A0h
Set time of day
A2h
Check key lock
A4h
Initialize Typematic rate
A8h
Erase F2 prompt
AAh
Scan for F2 key stroke
ACh
Enter Setup
AEh
Clear Boot flag
B0h
Check for errors
B2h
POST done - prepare to boot operating system
B4h
1
One shot beep before boot
B5h
Terminate QuietBoot (optional)
B6h
Check password (optional)
B9h
Prepare Boot
BAh
Initialize DMI Parameters
BBh
Initialize PnP Option ROMs
BCh
Clear parity checkers
BDh
Display MultiBoot menu
BEh
Clear screen (optional)
BFh
check virus and back up reminders
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C0h
Try to boot with INT 19
C1h
Initialize POST Error Manager (PEM)
C2h
Initialize error logging
C3h
Initialize error display function
C4h
Initialize system error handler
C5h
PnPnd dual CMOS (optional)
C6h
Initialize notebook docking (optional)
C7h
Initialize notebook docking late
C8h
Force check (optional)
C9h
Extended checksum (optional)
D2h
Unknown interrupts
Code Beeps For Boost Block in Flash ROM
E0h
Initialize the chipset E1h
Intitialize the bridge E2h
Initialize the CPU E3h
Initialize system timer E4h
Initializesystem I/O E5h
Check force recovery boot E6h
Checksum BIOS ROM E7h
Go to BIOS E8h
Set Huge Segment E9h
Initialize Multi Processor EAh
Initialize OEM Special code EBh
Initialize PIC and DMA ECh
Initialize Memory type EDh
Initialize Memory size EEh
Shadow Boot Block EFh
System memory test F0h
Initialize interrupts vectors F1h
Initialize Run Time Clock
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F2h
Initialize Video F3h
Initialize beeper F4h
Initialize boot F5h
Clear Huge segment F6h
Boot to Mini DOS F7h
Boot to Full DOS
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting
Compaq Diagnostics
Compaq Diagnostics is installed on the hard drive of the computer. Run the Diagnostics utilities when you want to view or test system information and if you have installed or connected devices. If you run Compaq Diagnostics from a diskette, ensure that it is version
10.11 or later.
The Diagnostics menu includes the following utilities:
■ Computer Checkup (TEST)
■ View System Information (INSPECT)
■ Prepare Computer for a Compaq Service Call (RemotePaq)
If you have a problem you cannot solve, run the Diagnostics utilities before you call for support. Run Computer Checkup and select to save the device list to a file and to print or to save the error log. Run the View System Information (INSPECT) utility and select to print or to save that information. Have the files or the printed information available when you call for support.
Computer Checkup (TEST)
Computer Checkup (TEST) determines whether the various computer components and devices are recognized by the system and are functioning properly. You can display, print, or save the information generated by Computer Checkup.
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Follow these steps to run Computer Checkup:
1. Plug the computer into an external power source. (A low battery condition could interrupt the program.)
2. Turn on the external devices that you want to test. Connect the printer if you want to print a log of error messages.
3. Insert the Compaq Diagnostics diskette in drive A.
4. Turn on or restart the computer. The computer starts from drive A, and the Diagnostics Welcome screen appears.
5. Press Enter to continue. The Diagnostics menu appears.
6. Select Computer Checkup from the Diagnostics menu. A Test Option menu appears.
7. Select View the Device List from the Test Option menu. A list of the installed Compaq devices appears.
8. If the list of installed devices is correct, select OK. The Test Option menu appears.
NOTE:
If the list is incorrect, ensure that any new devices are installed properly.
9. Select one of the following from the Test Option menu:
■ Quick Check Diagnostics. Runs a quick, general test on each device with a minimal
number of prompts. If errors occur, they display when the testing is complete. You cannot print or save the error messages.
■ Automatic Diagnostics. Runs unattended, maximum testing of each device with
minimal prompts. You can choose to run the tests for a specified number of times, to stop on errors, or to print or save an error log.
■ Prompted Diagnostics. Allows maximum control over testing the devices. You can
choose attended or unattended testing, decide to stop on errors, or choose to print or save an error log.
10. Follow the instructions on the screen as the devices are tested. When testing is complete, the Test Option menu appears.
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11. Exit the Test Option menu.
12. Exit the Diagnostics menu.
View System Information (INSPECT)
The View System Information (INSPECT) utility provides information about the computer and installed or connected devices. You can display, print, or save the information.
Follow the steps listed below to run View System Information (INSPECT) from the Compaq Diagnostics diskette:
1. Turn on the external devices that you want to test. Connect the printer if you want to print the information.
2. Insert the Compaq Diagnostics diskette in drive A.
3. Turn on or restart the computer. The computer starts from drive A, and the Diagnostics Welcome screen appears.
4. Press Enter to continue. The Diagnostics menu appears.
5. Select View System Information (INSPECT) from the Diagnostics menu.
6. Select the item you want to view from the following list:
System Memory ROM Audio Keyboard Operating system System ports System files System storage Windows files Graphics
7. Follow the instructions on the screen to cycle through the screens, to return to the list and choose another item, or to print the information.
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting
Diagnostic Error Codes
Diagnostic error codes occur if the system recognizes a problem while running the Compaq Diagnostic program. These error codes help identify possibly defective subassemblies.
The following tables list error codes, a description of the error condition, and the action required to resolve the error condition.
IMPORTANT:
Retest the system after completing each step. When a step resolves the problem, do not proceed
with the remaining steps.
For the removal and replacement of a particular subassembly, see Removal and Replacement
Procedures.
Select error codes by number or type:
101 through 114 Processor Test 200 through 215 Memory Test 300 through 304 Keyboard Test 401 through 403 Parallel Printer Test 501 through 516 Video Test 600 through 699 Diskette Drive Test 1101 Serial Test 1701 through 1736 Hard Drive Test 2402 through 2480 Video Test 3206 Audio Test 8601 through 8602 TouchPad/Pointing Device interface Test 3301 through 6623 CD Drive Test
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Processor Test Error Codes
Error Code
Description Recommended Action
101-xx CPU test failed Replace the processor and retest. 102-xx Coprocessor or Weitek Error 1. Run the Configuration and
Diagnostics Utilities.
2. Replace the processor board and retest.
103-xx DMA page registers test failed. Replace the system board and
retest.
104-xx Interrupt controller master test failed.
105-xx Port 61 error 106-xx Keyboard controller self-test failed. 107-xx CMOS RAM test failed. 108-xx CMOS interrupt test failed. 109-xx CMOS clock test failed. 110-xx Programmable timer load data test
failed. 113-xx Protected mode test failed. 114-01 Speaker test failed. 1. Check system configuration.
2. Verify cable connections to speaker.
3. Replace the system board and retest.
Memory Test Error Codes
200-xx Memory machine ID test failed. 1. Flash the system ROM and
retest.
2. Replace the system board and retest.
202-xx Memory system ROM checksum
failed.
203-xx Write/Read test failed. 1. Remove the memory module
and retest.
2. Install a new memory module and retest.
204-xx Address test failed. 211-xx Random pattern test failed. 214-xx Noise test failed. 215-xx Random address test failed.
Keyboard Test Error Codes
300-xx Failed ID Test 1. Check the keyboard connection.
If disconnected, turn off the computer and connect the keyboard.
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2. Replace the keyboard and retest.
3. Replace the system board and retest.
301-xx Failed Selftest/Interface Test
302-xx Failed Individual Key Test
304-xx Failed Keyboard Repeat Test
Parallel Printer Test Error Codes
401-xx Printer failed or not connected 1. Connect the printer.
2. Check power to the printer.
3. Install the loop-back connector and retest.
4. Check port and IRQ configuration.
5. Replace the system board and retest.
402-xx Failed Port Test
403-xx Failed Printer Pattern Test
Video Test Error Codes (501-xx through 516-xx)
501-xx Failed Video Controller Test 1. Disconnect external monitor
and test with internal LCD display.
2. Replace the display assembly and retest.
3. Replace the system board and retest.
502-xx Failed Video Memory Test 503-xx Failed Video Attribute Test 504-xx Failed Video Character Set Test
505-xx
Failed Video 80 x 25 mode 9 x 14
Character Cell Test 506-xx
Failed Video 80 x 25 mode 8 x 8
Character Cell Test 507-xx Failed Video 40 x 25 Mode Test
508-xx
Failed Video 320 x 200 Mode Color
Set 0 Test 509-xx
Failed Video 320 x 200 Mode Color
Set 1 Test 510-xx Failed Video 640 x 200 Mode Test
511-xx
Failed Video Screen Memory Page
Test 512-xx Failed Video Gray Scale Test 514-xx Failed Video White Screen Test 516-xx Failed Video Noise Pattern Test
Diskette Drive Test
600-xx
Failed Diskette ID Drive Types Test 1. Replace the diskette media and
retest.
2. Check and/or replace the
601-xx
Failed Diskette Format 602-xx
Failed Diskette Read Test
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diskette power and signal cables and retest.
3. Replace the diskette drive and retest.
4. Replace the system board and retest.
603-xx
Failed Diskette Write/Read/Compare
Test 604-xx
Failed Diskette Random Read Test 605-xx
Failed Diskette ID Media 606-xx
Failed Diskette Speed Test 609-xx
Failed Diskette Reset Controller Test 610-xx
Failed Diskette Change Line Test 697-xx
Diskette type error 698-xx
Diskette drive speed not within limits
699-xx Diskette drive/media ID error 1. Replace media.
2. Run the Configuration and Diagnostics Utilities.
Serial Test Error Codes
1101-xx Failed Serial Port Test 1. Check port configuration.
2. Replace the system board and retest.
Hard Drive Test Error Codes
1701-xx
Failed Hard Drive Format Test 1. Run the Configuration and
Diagnostics Utilities and verify drive type.
2. Verify that all secondary drives have secondary drive capability.
3. Replace the hard drive and retest.
4. Replace the system board and retest.
1702-xx
Failed Hard Drive Read Test 1703-xx
Failed Hard Drive Write/Read/
Compare Test 1704-xx
Failed Hard Drive Random Seek Test 1705-xx
Failed Hard Drive Controller Test 1706-xx
Failed Hard Drive Ready Test 1707-xx
Failed Hard Drive Recalibration Test 1708-xx
Failed Hard Drive Format Bad Track
Test 1709-xx
Failed Hard Drive Reset Controller
Test 1710-xx
Failed Hard Drive Park Head Test 1715-xx
Failed Hard Drive Head Select Test 1716-xx
Failed Hard Drive Conditional Format
Test 1717-xx
Failed Hard Drive ECC* Test 1719-xx
Failed Hard Drive Power Mode Test 1724-xx
Failed Network Preparation Test 1736-xx
Failed Drive Monitoring Test *ECC = Error Correction Code
Video Test Error Codes (2402-xx through 2480-xx)
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2402-xx Failed Video Memory Test 1. Run the Configuration and
Diagnostics Utilities
2. Replace the display assembly and retest.
3. Replace the system board and retest.
2403-xx Failed Video Attribute Test 2404-xx Failed Video Character Set Test
2405-xx
Failed Video 80 x 25 mode 9 x 14
Character Cell Test 2406-xx
Failed Video 80 x 25 mode 8 x 8
Character Cell Test 2408-xx
Failed Video 320 x 200 Mode Color
Set 0 Test 2409-xx
Failed Video 320 x 200 Mode Color
Set 1 Test 2410-xx
Failed Video 640 x 200 Mode Test
2411-xx
Failed Video Screen Memory Page
Test 2412-xx Failed Video Gray Scale Test
2414-xx
Failed Video White Screen Test
2416-xx Failed Video Noise Pattern Screen 2418-xx Failed ECG/VGC Memory Test 2419-xx
Failed ECG/VGC ROM Checksum Test 1. Run the Configuration and
Diagnostics Utilities.
2. Disconnect external monitor and test with internal LCD display.
3. Replace the display assembly and retest.
4. Replace the system board and retest.
2421-xx
Failed ECG/VGC 640 x 200 Graphics
Mode Test
2422-xx
Failed ECG/VGC 640 x 350 16 Color
Set Test
2423-xx
Failed ECG/VGC 640 x 350 64 Color
Set Test
2424-xx
Failed ECG/VGC Monochrome Text
Mode Test
2425-xx
Failed ECG/VGC Monochrome
Graphics Mode Test 2431-xx
Failed 640 x 480 Graphics Test
2432-xx
Failed 320 x 200 Graphics (256 Color
Mode) Test 2448-xx
Failed Advanced VGA Controller Test
2451-xx
Failed 132-Column Advanced VGA
Test 2456-xx Failed Advanced VGA 256 Color Test
2458-xx Advanced VGA BitBLT Test Replace the system board and
retest.
2468-xx Advanced VGA DAC Test
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2477-xx Advanced VGA Data Path Test
2478-xx Advanced VGA BitBLT Test
2480-xx Advanced VGA LineDraw Test
Audio Test Error Codes
3206-xx Audio System Internatl Error Replace the system board and
retest.
TouchPad/Pointing Device Interface Test Error Codes
8601-xx Failed Mouse Test 1. Replace the TouchPad and
retest.
2. Replace the system board and retest.
8602-xx Failed Interface Test
CD Drive Test Error Codes
3301-xx Failed CD Drive Read Test 1. Replace the CD and retest.
2. Verify that the speakers are connected.
3. Verify that drivers are loaded and properly installed.
4. Replace the CD drive and retest.
5. Replace the system board and retest.
3305-xx Failed CD Drive Seek Test
6600-xx Failed ID Test
6605-xx Failed Read Test
6608-xx Failed Controller Test
6623-xx Failed Random Read Test
Back to top
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting Without Diagnostics
This section provides information about how to identify and correct some common hardware, memory, and software problems. It also explains several types of common messages that may be displayed on the screen. The following pages contain troubleshooting information on:
Audio Battery/Battery gauge CD drive Diskette/Diskette drive Display Hard drive Hardware Installation Memory PC Card Power Printer Touch Pad Keyboard/Numeric
Keypad
Since symptoms can appear to be similar, carefully match the symptoms of the computer malfunction against the problem description in the Troubleshooting tables to avoid a misdiagnosis.
WARNING: To avoid a potential shock hazard during troubleshooting procedures, disconnect all power
sources before removing the keyboard cover or the display bezel.
Before Replacing Parts
Verify that cables are connected properly to the suspected defective parts.
■ Run Computer Setup after connecting external devices.
■ Verify that all required device drivers are installed.
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■ Verify that all required changes have been made to the CONFIG.SYS file.
■ Verify that all required changes have been made to the AUTOEXEC.BAT file.
■ Verify that all printer drivers have been installed for each application.
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting Without Diagnostics
Solving Minor Problems
Some minor problems and possible solutions are outlined in the following tables. If the problem appears related to a software application, check the documentation provided with the software.
Solving Audio Problems
Some common audio problems and solutions are listed in the following table.
Solving Audio Problems
Problem Probable Cause Solution(s)
Computer does not beep after the Power­On Self-Test (POST).
This is typical; it indicates successful completion of the Power-On Self-Test (POST).
No action is required.
Solving Battery Pack and Battery Gauge Problems
Some common causes and solutions for battery pack problems are listed in the following table. The "Solving Power Problems" section in this chapter may also be applicable.
Solving Battery Pack and Battery Gauge Problems
Problem Probable Cause Solution(s)
Computer won't turn on when battery pack is inserted and power cord is unplugged.
Battery pack is discharged. Connect the computer to an external
power source and charge the battery pack.
Replace the battery pack with a fully charged battery pack.
Check the battery connectors on the system board to verify they are evenly spaced and that they are not bent or broken.
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Computer is beeping and battery LED icon is blinking.
Battery charge is low. Immediately save any open file(s).
Then do any one of the following:
● Connect the computer to an
external power source to charge the battery pack.
● Turn off the computer or
initiate Hibernation until you can find another power source or charge the battery pack.
Computer battery LED icon (front on the unit) blinks to indicate low battery condition, but computer does not beep.
Volume is turned down too low. Adjust the volume.
Battery LED icon doesn't light and battery pack won't fast charge.
Battery pack is already charged. No action is necessary.
Battery pack was exposed to temperature extremes.
Allow time for the battery pack to return to room temperature.
Battery pack is at end of its life. Replace battery pack.
You have to set the date and time every time you turn on the computer.
RTC battery is dead. Replace the RTC battery.
Problem Probable Cause Solution(s)
Battery charge does not last as long as expected.
Battery is being exposed to high temperatures or extremely cold temperatures.
Keep the battery pack within the recommended operating temperature range 50° F to 104° F (10° C to 40° C) or recommended storage range -4° F to 86° F (-20° C to 30° C ). Recharge the battery pack.
Battery has partially self-discharged. Recharge the battery. Discharge the
battery completely and then recharge it.
Power management is disabled. Set a power management level in
Computer Setup.
An external device or PC Card is draining the battery.
Turn off or disconnect external devices when not using them.
Battery pack is warm to the touch after charging.
Normal warming has occurred due to charging.
No action is required.
Battery pack operating time is far less than the documented average operating time.
Power management is turned off or disabled.
Enable power management in Computer Setup and in Windows Power Properties.
An external device or PC Card is draining the battery.
Turn off or disconnect external devices when not using them.
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Battery pack has partially self­discharged.
Condition the battery pack by fully charging, fully discharging, then fully recharging it.
To maintain the charge, leave battery packs in the computer when it is connected to external power.
If the computer is disconnected from external power for more than two weeks, remove battery packs from the computer to reduce the discharge rate.
Battery pack is being exposed to high temperatures or extremely cold temperatures.
Keep the battery pack within the recommended temperature ranges. Operating: 50° F to 104° F (10° C to 40° C) Storage: -4° F to 86° F (-20° C to 30° C )
Recharge the battery pack.
Solving CD Drive Problems
Some common causes and solutions for CD drive problems are listed in the following table.
Solving CD Drive Problems
Problem Probable Cause Solution(s)
CD drive cannot read a compact disc. Compact disc is upside down or is
improperly inserted in the CD drive.
Open the CD loading tray, lay the compact disc in it (label side up), then close the tray.
CD is CD Plus or Pregap/Track 0 type.
Cannot read these type CDs in 24x. Remove the CD.
Solving Diskette and Diskette Drive Problems
Some common causes and solutions for diskette and diskette drive problems are listed in the following table.
Solving Diskette and Diskette Drive Problems
Problem Probable Cause Solution(s)
Diskette drive cannot write to a diskette.
Diskette is write-protected. Disable the diskette's write-protect
feature or use a diskette that is not write-protected.
Computer is writing to the wrong drive.
Check the drive letter in the path statement.
Not enough space is left on the diskette.
Use another diskette.
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Drive error has occurred. Run Computer Checkup from the
Compaq Diagnostics diskette.
Diskette is not formatted. Format the diskette. At the system
prompt, enter FORMAT A:
Diskette drive cannot read a diskette. The wrong type of diskette is being
used.
Use the type of diskette required by the drive.
Diskette has a bad sector. Copy files to hard drive or another
diskette. Reformat bad floppy.
Drive error has occurred. Run Computer Checkup from the
Compaq Diagnostics diskette.
Diskette is not formatted.
Format the diskette. At the system prompt, enter FORMAT A:
Cannot boot from diskette. Bootable diskette is not in drive A. Put the bootable diskette in drive A.
Diskette Boot has incorrect setting in Computer Setup.
Run Computer Setup and set diskette as first to boot.
Solving Display Problems
This section lists some common causes and solutions for computer display and external monitor problems.
You can perform a monitor self-test on an external VGA color or monochrome monitor by disconnecting the monitor from the computer. To do so, complete the following steps:
1. Turn off the monitor.
2. Turn off the computer.
3. Disconnect the monitor signal cable from the computer.
4. Turn on the monitor and allow it to warm up for one minute.
The display should be white. A narrow black border may also appear on the left and right sides of the display. Either of these displays indicates that the monitor is working properly.
Solving Display Problems
Problem Probable Cause Solution(s)
Screen is dim. Control for brightness or contrast
(if applicable) is not set properly.
Adjust the Brightness of the display by using Fn + F7 (¯ ) or Fn + F8 (- ).
Adjust the Contrast of the display by using Fn + F5 (¯ ) or Fn + F6 (- ).
Computer screen is in direct light. Tilt display or move computer.
Screen is blank. Screen save was initiated by Power
Management due to lack of user activity.
Press any key or touch the Touch Pad.
Display has overheated. If computer is in direct sunlight,
move it and allow it to cool off.
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Display is blank and the Suspend icon is flashing.
System is in Suspend mode. Press any key or touch the Touch
Pad.
Internal display is blank and the screen on an external monitor displays information.
Display function was switched to the external monitor.
Use Fn + F2 to switch between LCD or CRT.
Problem Probable Cause Solution(s)
Internal display flashes or has garbled characters when computer is connected to external monitor.
Using 1024 × 768 or higher resolution on external monitor and have toggled back to internal display, which supports up to 800 × 600.
Restart the computer.
The light tubes on the edge of the display panel do not light up at all and Power-On Self-Test (POST) completes when the unit is powered up.**
Improper backlight or display cable connections
Replace the display assembly.
Defective inverter board. Replace the display assembly. Defective display cable. Replace the display assembly. Defective display panel. Replace the display assembly. Defective system board. Replace the system board.
The light tubes on the edge of the display panel do not light up at all and Power-On Self-Test (POST) does not complete when the unit is powered up.**
Defective system board. Replace the system board.
Backlight (brightness) cannot be adjusted with Fn + F7 (¯ ) or Fn + F8 (- ).***
Improper display cable connections.
1. Reseat the display cable to the system board.
2. Replace the display assembly.
Defective inverter board. Replace the display assembly. Defective display cable. Replace the display assembly. Defective system board. Replace the system board.
Contrast cannot be adjusted with Fn + F5 (¯ ) or Fn + F6 (- ).
Improper display cable connections.
1. Reseat the display cable to the system board.
2. Replace the display assembly.
Defective inverter board. Replace the display assembly. Defective display cable. Replace the display assembly. Defective system board. Replace the system board.
** This problem indicates that the backlight or its power circuitry has failed. Since you cannot observe the POST result on the display panel when the backlight is not functioning, connect the unit to an external monitor before powering the unit up. If an external monitor is not available, verify that POST completes by opening and closing the display, listening for the single or double beep, and watching for the LEDs turn on at the front of the computer.
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Problem Probable Cause Solution(s)
This display panel has a continuous pattern across it (e.g., a "jailbars" pattern), has a single color on it, or has garbled graphics across the entire panel. This failure is for patterns across the entire panel (not just on one section).
Improper display cable connections
Reseat the display cable to the following until the problem is solved:
1. System board
2. Display assembly
Defective display cable. Replace the display assembly.
Defective inverter board. Replace the display assembly.
Defective system board. Replace the system board.
Ghost bars extending from graphics on the display.
Common characteristic of STN displays.
1. Change the background colors.
2. Adjust the Contrast of the display by using Fn + F5 or Fn + F6 .
A single line, small group of lines, or block appears on the display panel. This failure occurs in only a section of the display panel.
Defective display panel. Replace the display assembly.
NOTE:
To perform a "self-test" on an external VGA color or monochrome monitor, complete the following steps: The screen should be white. A narrow black border may also appear on the left and right sides of the display. Either of these displays indicates that the monitor is working properly.
Solving Hard Drive Problems
Some common causes and solutions for hard drive problems are listed in the following table.
CAUTION: To prevent loss of information, always maintain an up-to-date backup of your hard drive at all times, in case of errors or failures.
Solving Hard Drive Problems
Problem Probable Cause Solution(s)
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Reading hard drive takes an unusually long time after restarting the computer.
System entered Hibernation due to low battery condition and is now exiting from it.
Give the system time to restore the previously saved data to its exact state before Hibernation.
Hard drive error occurs. Hard drive has bad sectors or has
failed.
Run Computer Checkup.
Hard drive does not work. Hard drive is not seated properly. Turn off and unplug the computer,
remove the battery pack, and remove and then reinstall the hard drive.
Solving Hardware Installation Problems
Some common causes and solutions for hardware installation problems are listed in the following table.
Solving Hardware Installation Problems
Problem Probable Cause Solutions(s)
A new device is not recognized as part of the computer system.
Cable(s) of new external device are loose or power cables are unplugged.
Ensure that all cables are properly and securely connected.
Power switch of new external device is
not turned on.
Turn off the computer, turn on the external device, then turn on the computer to integrate the device with the computer system.
Device is not seated properly. Turn off the computer and reinsert the
device.
Solving Keyboard/Numeric Keypad Problems
Some common causes and solutions for keyboard/numeric keypad problems are listed in the following table.
Solving Keyboard/Numeric Keypad Problems
Problem Probable Cause Solution(s)
Embedded numeric keypad on computer keyboard is disabled.
Num Lock function is not enabled. Press the Shift+NumLk keys to
enable the Num Lock function and embedded numeric keypad. The Num Lock icon on the status panel turns on.
Embedded numeric keypad is disabled and Num Lock function is on.
External numeric keypad is connected to the computer.
Disconnect the external numeric keypad from the computer.
Solving Memory Problems
Some common causes and solutions for memory problems are listed in the following table.
Solving Memory Problems
Problem Probable Cause Solution(s)
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Memory count during Power-On Self-Test (POST) is incorrect.
Optional memory expansion card is installed incorrectly, is incompatible with the computer, or is defective.
Ensure that the optional memory expansion card is installed correctly.
"Out of Memory" message is displayed on the screen or insufficient memory error occurs during operation.
System ran out of memory for the application.
Check the application documentation for memory requirements.
Install additional memory.
Too many TSR (terminate-and stay-resident) applications are running.
Remove from memory any TSR applications that you do not need.
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Troubleshooting
Contacting Compaq Support
Obtain the following information before contacting Compaq Reseller Support:
● Product name
● Product serial number
● Purchase date
● Conditions under which the problem occurred
● Any error messages that have occurred
● Hardware configuration
● Type of printer connected
● Hardware/software being used
● Printed result of Computer Checkup (TEST)
● Printed copies of CONFIG.SYS and AUTOEXEC.BAT files, if possible
Shipping Preparation
To ship the computer, complete the following steps:
1. Back up the critical hard drive files. Ensure that backup tapes/diskette are not exposed to electrical or magnetic fields while stored in transit.
2. Turn off the computer and external devices.
3. Disconnect the external devices from their power sources, then from the computer.
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IMPORTANT:
Ensure that there is no diskette in the diskette drive and that there are no PC Cards in the PC slots.
4. Close the display and all exterior doors of the computer.
5. Pack the computer with sufficient packing material to protect it. Use the original packing box or similar packaging.
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United States June 27, 2004
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
System Unit
System Unit Boards
Display Assembly
Mass Storage Devices
Miscellaneous Cable Kit
Miscellaneous Hardware Kit
Miscellaneous Plastics Kit
Miscellaneous Parts
Documentation and Software
Description
Spare Part Number
1. Keyboard
Palmrest Cover w/TouchPad and Button Board (Models 1277 and 1278)
142654­001
2. Palmrest Cover w/ TouchPad and Button Board (Models: 1246, 1247,
1278)
142653­001
2. Palmrest Cover w/ TouchPad (without Soft Paint) (Model TBD)
161416­001
3. Upper CPU Cover w/ Power Switch
158799­001
United States 141706-001
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4. Speaker Assembly w/ Cables
148108­001
5. Base
Enclosure
158798­001
6. Battery Pack
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LION Enhanced 388647-001
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
Boards
System Unit
Boards Display
Assembly Mass Storage
Devices Miscellaneous
Cable Kit Miscellaneous
Hardware Kit Miscellaneous
Plastics Kit Miscellaneous
Parts Documentation
and Software
Description Spare Part Number
1. Heatspreader 158802-001
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2. Voltage Convertor Board 352891-001
3. Modem 56K Data/Fax w/o SRAM 400445-001
3. Modem 56K Data/Fax w/o SRAM-Intl 143848-001
4. Processor AMD K6II
5. System Board w/512K Cache
6. Fan Assembly
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400-Mhz (Models: 1246, 1247, 1277, and 1278) 134079-001
32 MB 158793-001
Fan A 158800-001
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
Display Assembly
System Unit Boards Display
Assembly Mass Storage
Devices Miscellaneous
Cable Kit Miscellaneous
Hardware Kit Miscellaneous
Plastics Kit Miscellaneous
Parts Documentation
and Software
Description
Spare
Part
Number
Display
12.1" HPA (Models: 1246, 1247, 1278, and
1279)
158795-
001
Display
13.0" HPA (Model:
1277)
158796-
001
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COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
Mass Storage Devices
System Unit Boards
Display Assembly
Mass Storage Devices
Miscellaneous Cable Kit
Miscellaneous Hardware Kit
Miscellaneous Plastics Kit
Miscellaneous Parts
Documentation and Software
Use the scroll down menu for the description and spare part number.
1. 4.3-GB Hard Drive 144410-001 (Model 1246)
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
Miscellaneous Cables Kit
System Unit Boards Display
Assembly Mass Storage
Devices Miscellaneous
Cables Kit Miscellaneous
Hardware Kit Miscellaneous
Plastics Kit Miscellaneous
Parts Documentation
and Software
Miscellaneous Cable Kit Spare Part Number: 330946-001
1a. Diskette Drive Cable
1 each
1b. Hard Drive Cable
1 each
1c. CD Drive Cable
1 each
1d. Touchpad Cable
1 each
1e. Modem Cable
1 each
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
Miscellaneous Hardware Kit
System Unit Boards Display
Assembly Mass Storage
Devices Miscellaneous
Cable Kit Miscellaneous
Hardware Kit Miscellaneous
Plastics Kit Miscellaneous
Parts Documentation
and Software
Miscellaneous Hardware
Kit
Spare Part Number:
346853-001
Description Quantity
1. Hard Drive Mounting Bracket
1 each
2. LCD Guide FPC
1 each
3. Spring Torsion PCMCIA
4 each
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models : 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
Miscellaneous Plastics Kit
System Unit Boards Display
Assembly Mass Storage
Devices Miscellaneous
Cable Kit Miscellaneous
Hardware Kit Miscellaneous
Plastics Kit Miscellaneous
Parts Documentation
and Software
Miscellaneous Plastics
Kit Spare Part
Number: 142657-001
Description Quantity
1. Door, Battery Pack
1 each
2. Cover, Memory Module
1 each
3. Door, PCMCIA
1 each
4. Display Hinge Cover, (Left)
1 each
5. Display Hinge Cover, (Right)
1 each
6. CD Drive Guide
1 each
7. Rubber Plug (A)
4 each
8. Rubber Plug (B)
4 each
9. Rubber Foot
8 each
10. Latch (Right)
2 each
11. Latch (Left)
2 each
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
Miscellaneous Parts
System Unit Boards Display
Assembly Mass Storage
Devices Miscellaneous
Cable Kit Miscellaneous
Hardware Kit Miscellaneous
Plastics Kit Miscellaneous
Parts Documentation
and Software
Use the scroll down menu for the description and spare part number of spare parts Not Shown.
Miscellaneous Screw Kit (Not Shown) 330959-001
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Miscellaneous Parts
1. AC Adapter 298239-001
2. Return Kit (not shown)
293799-001
3. Logo Kit (not shown)
141848-001
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Illustrated Parts Catalog
Documentation and Software
System Unit Boards Display
Assembly Mass Storage
Devices Miscellaneous
Cable Kit Miscellaneous
Hardware Kit Miscellaneous
Plastics Kit Miscellaneous
Parts Documentation
and Software
Description Spare Part Number
Quick Restore CD
Reference Guide
Feature Guide
QuickFind for Windows, North America, Latin America, Asia Pacific
Information Not Available
QuickFind for Windows, Europe, Middle East, Africa
Information Not Available
*QuickFind is updated monthly. To complete the QuickFind part number, add the
suffix from the table below for the desired month. If you do not specify the 3-digit suffix, the default is the current month in which the order is placed.
QuickFind Part Number Suffix
Suffix Month Suffix Month
-001 January -007 July
-002 February -008 August
-003 March -009 September
Arab Emirates 153115-171
Arab Emirates 117894-032
Arab Emirates 153325-001
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United States June 27, 2004
COMPAQ
STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US |
Maintenance & Service Guide
Presario Series
Models: 1246, 1247, 1277, 1278, and 1279
| Home Page | Notice | Preface | Product Description | Troubleshooting
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications
Pin Assignments | Battery Pack Operations
Removal and Replacement Procedures
Electrostatic Discharge
CAUTION: A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device exposed to electrostatic discharge (ESD) may not be affected at all and will work perfectly throughout a normal cycle. The device may function normally for a while, then degrade in the internal layers. This reduces the device's life expectancy.
Networks built into many integrated circuits provide some protection from discharges of static electricity, but in many cases the discharge contains enough power to alter device parameters or melt silicon junctions.
Generating Static
The following table shows how different activities generate static electricity at different electrostatic voltage levels.
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Typical Electrostatic Voltages
Relative Humidity
Event 10% 40% 55%
Walking across carpet 35,000 V 15,000 V 7,500 V Walking across vinyl floor 12,000 V 5,000 V 3,000 V Motions of bench worker 6,000 V 800 V 400 V Removing DIPS from plastic tubes 2,000 V 700 V 400 V Removing DIPS from vinyl trays 11,500 V 4,000 V 2,000 V Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V Removing bubble pack from PCBs 26,000 V 20,000 V 7,000 V Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V NOTE: 700 volts can degrade a product.
Return to Removal & Replacement Procedures
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