COMPAQ 1270, 1675 Maintenance & Service Guide

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Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

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

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. Many of the components of the hardcopy MSG are contained in this online guide. The Notice,

contains the copyright and trademark information. The Preface shows symbol conventions, 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.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

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.

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

First Edition (March 1999) Compaq Computer Corporation

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

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 the 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: 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.

NOTE:

Text set off in this manner presents commentary, sidelights, or interesting points of information.

Technician Notes

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, the computer serial number should be provided 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

Maintenance & Service Guide

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Product Description

Presario Series

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

Compaq Presario Series Portable Computer is a continuation of the new generation of multimedia portable computers with an innovative integrated design, outstanding audio and video, advanced core features, and attractive styling. This full-function, AMD-K6 based portable computer allows full desktop functionality.

Maintenance & Service Guide

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Troubleshooting

Presario Series

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

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

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.

Preliminary Steps.

Diagnostic Error Codes perform them in the order

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

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 an breakdown and identifies the spare parts ordering number associated with each item(s) for the Compaq Presario Series Portable Computers.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

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 Processor Hard Drive

Report the computer

serial number to Compaq when

requesting information or ordering spare parts.

DVD or 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

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

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:

● Computer models

● Physical and environmental

● System Interrupts

● System DMA

● System I/O Address

● System Memory Catalog

● Display

● Memory expansion

● Diskette drive

● Hard drive

● DVD or CD drive

● Battery pack

Physical and Environmental

Dimensions

Height Depth Width

Weight

Model 1270 Model 1670 Model 1675

Stand-Alone (Battery Pack) Power Requirements

Computer Specifications

U.S. Metric

1.97 in

12.32 in

10.12 in

7.35 lbs

7.99 lbs

Li Ion

5.0 cm

31.3 cm

25.7 cm

3.34 kg

3.63 kg

Nominal Operating Voltage Maximum Operating Power Peak Operating Power

AC Power Requirements

Operating Voltage Operating Current Operating Frequency Maximum Transient

Temperature

Operating 41° to 95 °F 5° to 35 °C Nonoperating -4° to 140 °F -20° to 60 °C

Relative Humidity (Non-condensing)

Operating 10 to 90% 35°C to 90% Nonoperating (tw = 38.7°C max) 5 to 95% 60°C to 95%

Altitude

W @ 14.8 VDC W @ 56.5 W W @ 58.5 W

(Information not available)

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 Series Portable

Computers operate well within this range of temperatures.

System Interrupts

Hardware IRQ System Function

IRQ0 IRQ1 IRQ2 IRQ3 Compaq Prosignia 56K-DF

IRQ4

IRQ5 ES1869 Plug and Play Audio Drive IRQ6 Standard Floppy Disk Controller IRQ7 Printer Port (LPT1) IRQ8 System CMOS / real-time clock

IRQ9 (free) IRQ10 OPTi 82C861 PCI to USB Open Host Controller IRQ10 IRQ Holder for PCI Steering

Timer Interrupt Standard 101/102-Key or Microsoft Natural Keyboard Programmable interrupt controller

Communications Port (COM1)

System DMA

IRQ11 IRQ Holder for PCI Steering IRQ11 IRQ Holder for PCI Steering IRQ11 NeoMagic MagicGraph 128XD IRQ11 Texas Instruments PCI-1131 CardBus Controller IRQ11 Texas Instruments PCI-1131 CardBus Controller IRQ12 Synaptics PS/2 TouchPad IRQ13 Numeric data processor IRQ14 Primary IDE controller (dual fifo) IRQ14 Opti Viper Max Dual PCI IDE Controller IRQ15 Secondary IDE controller (dual fifo) IRQ15 Opti Viper Max Dual PCI IDE Controller

Hardware DMA System Function

0 1 2 3 4 5 6 7

System I/O Address

System DMA

ES1869 Plug and Play AudioDrive ES1869 Plug and Play AudioDrive Standard Floppy Disk Controller (free)

Direct memory access controller

(free) (free) (free)

System I/O Address

I/O Address (Hex) System Function (Shipping Configuration)

x0000 - x000F Direct memory access controller x0020 - x0021 Programmable interrupt controller x0022 - x0024 Motherboard resources x0040 - x0043 System timer x0060 - x0060 Standard 101/102-Key or Microsoft Natural Keyboard x0061 - x0061 System speaker x0064 - x0064 Standard 101/102-Key or Microsoft Natural Keyboard x0070 - x0071 System CMOS/real time clock x0080 - x0080 Motherboard resources x0081 - x008F Direct memory access controller

x0092 - x0092 Motherboard resources x00A0 - x00A1 Programmable interrupt controller x00C0 - x00DF Direct memory access controller x00EC - x00EF Motherboard resources

x00F0 - x00FF Numeric data processor x0170 - x0177 Opti Viper Max Dual PCI IDE Controller x0170 - x0177 Secondary IDE controller (dual fifo)

x01F0 - x01F7 Opti Viper Max Dual PCI IDE Controller

System Memory Catalog

Memory Address System Function

System Memory Catalog

x00000000 - x0009FFFF System board extension for PnP BIOS

x000A0000 - x000AFFFF NeoMagic MagicGraph 128XD

x000B0000 - x000BFFFF NeoMagic MagicGraph 128XD

x000C0000 - x000CBFFF NeoMagic MagicGraph 128XD

x000E0000 - x000FFFFF System board extension for PnP BIOS

x00100000 - x01FFFFFF System board extension for PnP BIOS

x03000000 - x03000FFF Texas Instruments PCI-1131 CardBus Controller

x03001000 - x03001FFF Texas Instruments PCI-1131 CardBus Controller

xFD000000 - xFDFFFFFF NeoMagic MagicGraph 128XD

xFEA00000 - xFEBFFFFF NeoMagic MagicGraph 128XD

xFECFF000 - xFECFFFFF OPTi 82C861 PCI to USB Open Host Controller

Display

xFED00000 - xFEDFFFFF NeoMagic MagicGraph 128XD

xFFFC0000 - xFFFFFFFF Motherboard resources

12.1" (Diagonal) TFT Display with LVDS U.S. Metric

Dimensions

Height Width

Diagonal Size Mounting Number of Colors Contrast Ratio Brightness Pixel Resolution

Pitch Format Configuration

Backlight Character Display Total Power Consumption

7.83"

10.8"

12.1" 30.7 cm Internal 16 M Typical 150:1 Over 120 cd/m~3

0.30 x 0.30 mm 800 x 600 RGB Stripe

19.9 cm

25.7 cm

Edge Light 80 x 25, 80 x 50

5.4 W (max)

(Information not available)

13.3" (Diagonal) TFT Display with LVDS U.S. Metric Dimensions

Height Width

Diagonal Size Mounting Number of Colors Contrast Ratio Brightness

Pixel Resolution

Pitch Format Configuration

Backlight Character Display

Total Power Consumption

14.1" (Diagonal) TFT Display with LVDS U.S. Metric Dimensions

Height Width

Diagonal Size 14.1" 35.8 cm Mounting Internal Number of Colors 64 K Contrast Ratio Typical 150:1 Brightness Over 120 cd/m~3

8.43"

11.2"

21.42 cm

28.56 cm

Pixel Resolution

Pitch Format Configuration

Backlight Character Display

Total Power Consumption 6.6 W (max)

Memory Expansion

System Memory Expansion Board Memory Total Memory

32-MB 32-MB 32-MB

0.279 x 0.279 mm 1024 x 768 RGB Stripe

Edge Light 80 x 25

Memory Expansion for 350-MHz Processor

32-MB 64-MB 64-MB 96-MB 128-MB 160-MB

System Memory Expansion Board Memory Total Memory

64-MB 64-MB 64-MB

Diskette Drive

Diskette Size Light Height

Bytes per Sector:

Sectors per Track High Density Low Density

Memory Expansion for 380-MHz Processor

32-MB 96-MB 64-MB 128-MB 128-MB 192-MB

Diskette Drive

3.5 in None .5" / 1.27 cm

512 18 (1.44-MB) / 15 (1.2-MB)

Tracks per Side

High Density Low Density

Access Times

Track-to-Track (high/low) Average (ms) Setting Time (ms) Latency Average

Number of Read/Write Heads

Hard Drive

80 (1.44-MB) / 80 (1.2-MB) 80

3 ms/6 ms 94 ms/174 ms 15 ms 100

Hard Drives

6.4-GB 4.3-GB Capacity Per Drive Drive Type Physical Configuration

Cylinders Heads Sectors per track Bytes per sector

Logical Configuration

Cylinders Heads Sectors per track Bytes per sector

Seek Times (Typical, Including settling in ms) Track to Track Average Maximum Rotational Speed

Transfer Rate

Media At interface

6.4-GB 4.3-GB

65 65

8647 6 240-250 512

13424 15 63 512

2.5 ms

13 ms 23 ms 4200 rpm

60.8 to 107.2 Mb/s

33.3 MB/s

8647 6 240-250 512

7944 15 63 512

2.5 ms 13 ms (read)

23 ms 4200 rpm

60.8 to 107.2 Mb/s

33.3 MB/s

Sector Interleave Buffer Size

DVD or CD Drive

Applicable Disk

Center Hole Diameter Disc Diameter Disc Thickness

1:1 1:1 512 KB 512 KB

CD Drive

24× CD Drive

CD-DA, CD-ROM, CD-ROM XA, CD-1, Photo CD (multisession), Video CD, CD-R, CDExtra (CD+), CD-G, CD-RW

.6" / 15 mm 12 cm, 8 cm

1.2 mm

Track Pitch

1.6 um

Access Time

(typical, including setting)

Audio Output Level

Line out Headphone

Cache Buffer Data Transfer Rate

(typical, including setting)

110 ms

+/- 0.27 Vrms none

128 KB 3600 KB/s

150 KB/s

16.66 MB/sec

Startup Time Stop time

< 8 sec < 4 sec

Applicable Disk

Center Hole Diameter Access Time

(typical, including setting)

Disc Thickness Track Pitch Laser

Beam Divergence

Audio Output Level

Line out Headphone

DVD Drive

DVD-ROM, CD-ROM, CD-XA, CD-I, Photo CD, Multisession, Audio, CD-R, CD-RW

6" / 15mm < 100 ms (CD)

< 150 ms (DVD)

4.7", 3.15" / 12cm, 8cm

0.74um (DVD)

.05" / 1.2cm

1.0 volts RMS 0 - 0.6 volts RMS

Cache Buffer Data Transfer Rate

(typical, including setting)

Startup Time Stop time

Battery Pack

Dimensions

Height Length Width

512 KB/s (CD) 12,000 - 3,000 KB/s (CD)

2705 KB/s (DVD) < 5 sec

< 3 sec

Battery Pack

Lithium Ion (Li ion) *

.81 in

3.05 in

5.69 in

US Metric

2.05 cm

7.75 cm

14.45 cm

Weight Battery Pack Operating Time

Energy

Voltage Amp-hour capacity Watt-hour capacity

Environmental Requirements

Operating Temperature Non-operating Temperature

0.85 Ib 3:00 hr

14.8 V

3.0 Ah

44.4 Wh

32° F to 113 F

-4° F to 140 ° F

.39 kg

0° to 45° C

-20° to 60° C

Modem

Compliance

Data Compression Fax Modulation

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

V.42bis/MNP 5 V. 17

V. 21 (Group III Compatible)

V.29

V.27Ter

Command Set

Top of Page

Cable

Hayes AT

Class 1 Fax 6 Ft. RJ-11 telephone cable

Maintenance & Service Guide

Universal Serial Bus Connector

Modem Connector

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Connector Pin Assignments

This appendix 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* 8 Data Bit 6 17 Select In* 9 Data Bit 7 18-25 Signal Ground * = Active low

Serial Connector

Connector Pin Signal

Carrier Detect

Receive Data

Transmit Data

Data Terminal Ready

Keyboard/Mouse

Signal Ground

Data Set Ready

Ready to Send

Clear to Send

Ring Indicator

Connector Pin Signal

Data 1

Data 2

External VGA Monitor

Ground

+5 V

Clock 1

Clock 2

Connector Pin Signal

Red Analog

Green Analog

Blue Analog

Not connected

Ground

Ground Analog

Not connected

Ground

Universal Serial Bus

Monitor Detect

DDC2B Data

Horizontal Sync

Vertical Sync

DDC2B Clock

Connector Pin Signal

+5V Data -

Data +

Ground

Modem

Connector Pin Signal

Unused

Tip

Ring

Unused

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Battery Pack Operating Time

This appendix covers the following information concerning battery pack operating time:

● Increase battery pack operating time

● Conditioning a battery pack

● Disposal 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

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: 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.

3. Your battery is re- conditioned.

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

Disposal 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.

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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 potentially harmful battery components.

Maintenance & Service Guide

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Models and Features

Presario Series

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 1675 Model 1670

Display Processor Cache Hard Drive DVD or CD Drive Modem System Memory

Display

Processor

14. 1" TFT 13.3" TFT AMD-K6 380-Mhz MMX AMD-K6 350-Mhz MMX 1-MB 1-MB

6.4-GB 4.3-GB 2x DVD 24x CD

56.0 Kbps Data/Fax with PCI 56.0 Kbps Data/Fax with PCI 64-MB 64-MB

Model 1270

12. 1" TFT

AMD-K6 350-Mhz MMX

Power Management for Windows 98

Cache

Hard Drive

CD Drive

Modem

System Memory

512K

4.3-GB

24x CD

56.0 Kbps Data/Fax with PCI

32-MB

Maintenance & Service Guide

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Controls and Lights

Models and Features

Presario Series

1. Display

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

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

Maintenance & Service Guide

Models: 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Front Bezel Lights

Models and Features

Presario Series

1. Power Light

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

2. Battery Charge Light

3. Power Cord Light

4. Num Lock Light

5. Cap Lock Light

6. Scroll Lock Light

Maintenance & Service Guide

Models: 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Front Bezel Buttons

Presario Series

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. 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)

7. Instant EMail Button

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Left Side Components

Models and Features

Controls and Lights

Front Bezel Lights

Front Bezel Buttons

Left Side Components

1. PC Card Eject Lever

2. PC Card Slot

3. Ethernet Connector Plug

4. Diskette Drive Slot

5. Diskette Eject Button

Right Side Components

Bottom of Unit

Rear Connectors

Power Management for Windows 98

Maintenance & Service Guide

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Right Side Components

Models and Features

Controls and Lights

Front Bezel Lights

Front Bezel Buttons

Presario Series

1. Battery Compartment

2. DVD or CD Drive Manual Eject Hole

3. DVD or CD Drive Eject Button

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

Power Management for Windows 98

Maintenance & Service Guide

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Bottom of Unit

Models and Features

Controls and Lights

Presario Series

Models : 1270, 1670, and 1675

1. Memory Compartment Door

2. Stand Feet

Front Bezel Lights

Front Bezel Buttons

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

Power Management for Windows 98

Maintenance & Service Guide

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Rear Connectors

Models and Features

Presario Series

Models : 1270, 1670, and 1675

1. AC Adapter

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

2. Universal Serial Bus

3. Security Slot

4. Serial Port

5. Port Replicator

6. External Monitor Port

7. Parallel Printer Port

8. Keyboard/Mouse Port

9. Modem Jack

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

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

Power 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 or DVD 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 will go 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.

Power Management Properties

Tab: Power Schemes: Plugged in Running on Batteries Always on System Standby: Never 15 minutes Turn OFF Monitor Always on System Standby: After 15 minutes After 10 minutes

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 will perform 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 will maintain system information and open files. Unsaved information will be lost if you turn off your system prior to system wake-up, or if you lose power while using the AC adapter.

CAUTION: While in Sleep mode, your computer will maintain system information and open files. Unsaved

information will be 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 will display a progress screen, as it automatically saves the machine state before it shuts down and turns itself off. Your computer will automatically go 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 will display 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

Time Out Default If low battery or after 1 hour of sleep (system will not Hibernate if on AC power)

Press Power Button once

No Power LED, blank screen

Off Perform normal

Windows

Press Power Button once

No Power LED,

blank screen shutdown via the start button, or press and hold down the power button for 4 seconds

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 putting the computer into Off mode, unplug from the outlet, and remove the battery

battery section for instruction on removing battery).

(see

Rebooting After a Lockup

Occasionally you may encounter a frozen keyboard or a locked screen. To reboot your computer (as if from 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, press the Power Button and hold it for four seconds to shut it down, then, remove the battery or unplug the AC power for at least 30 seconds. Reinsert the battery or reconnect AC power and 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.

Top of Page

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Preliminary Steps

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.

If the problem only occurs when an external device is connected to the computer,

IMPORTANT:

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.

the problem may be related to the external device or its cable. Verify this by running POST with and without the external device connected.

When the preliminary steps are completed, you are ready to run

POST.

Maintenance & Service Guide

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Power-On Self Test (POST)

Running POST

To run POST, complete the following steps:

Presario Series

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.

Power-On Self-Test Messages

102-System Board Failure

Probable Cause Recommended Action

DMA, timers, etc. Replace the system board.

162-System Options Not Set

Probable Cause Recommended Action

Configuration incorrect Run Computer Setup. CMOS reflects that an invalid

Run Computer Setup.

configuration has been set. RAM failure 1. Replace the memory modules.

2. Replace the system board.

Memory test data error 1. Replace the memory modules.

2. Replace the system board.

XX000YZZ RAM failure Replace the system board.

XX000YZZ 201-Memory Error

Probable Cause Recommended Action

301-Keyboard Error

Probable Cause Recommended Action Keyboard failure 1. Ensure the keys are not depressed during POST.

2. Reconnect the keyboard with the computer off.

3. Replace the keyboard.

304-Keyboard or System Unit Error

Probable Cause Recommended Action Keyboard or system board error 1. Replace the keyboard.

2. Replace the TouchPad or mouse.

3. Replace the system board.

601-Diskette Controller Error

Probable Cause Recommended Action Mismatch in drive type or failure in the

1. Run Computer Checkup (TEST).

diskette controller

2. Check and/or replace cables.

3. Replace the system board.

605-Diskette Drive Error

Probable Cause Recommended Action Mismatch in drive type Run Computer Setup.

1780-Primary Hard Drive 0 Failure

Probable Cause Recommended Action Disk 0 failed to respond 1. Run Computer Checkup (TEST).

2. Replace the hard drive.

Hard drive format error 1. Run Computer Checkup (TEST).

2. Replace the hard drive.

1782-Hard Drive Controller

Probable Cause Recommended Action Hard drive controller failure 1. Run Computer Setup.

2. Replace the hard drive.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

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

4. Remove the Palmrest Cover

with Touch Pad.

5. Remove the heatspreader.

6. Remove the keyboard.

7. Remove RTC battery for 30 seconds and replace it .

battery pack.

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.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

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 log of errors. 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.

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 how many times to run the tests, to stop on errors, or to print or save a log of errors.

■ 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 a log of errors.

10. Follow the instructions on the screen as the devices are tested. When testing is complete, the Test Option menu appears.

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 these steps 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.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

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.

IMPORTANT:

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.

Ensure that there is no diskette in the diskette drive and that there are no PC Cards in the PC slots.

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Boards

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Pin Assignments | Battery Pack Operations

System Unit

Boards

Display Assembly

Mass Storage Devices

Miscellaneous Cable Kit

Miscellaneous Hardware Kit

Miscellaneous Plastics Kit

Miscellaneous Parts

Documentation and Software

Description

Heatspreader

2. Voltage Convertor Board

3. Modem 56K Data/Fax w/o SRAM

4. Processor AMD P350Mhz

(Models: 1270 and

1670)

Processor AMD P380Mhz

(Model:

1675)

5. System

Board

(Models: 1670 and

1675)

System Board w/512K Cache

(Model:

1270)

Spare Part Number

122702001

352891001

400445001

122698001

123923001

400440001

122697001

6.Fan Assembly

7. System Memory 32-MB

(Model:

1270)

64-MB

(Models: 1670 and

1675)

400444001

122699001

122700001

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

System Unit Boards

Display Assembly

Mass Storage Devices

Miscellaneous Cable Kit

Miscellaneous Hardware Kit

Miscellaneous Plastics Kit

Miscellaneous Parts

Documentation and Software

Description

1. Display

14.1 TFT

(Model:

1675)

2. Display

13.3 TFT w/LVDS

(Model:

1670)

3. Display

12.1 TFT w/LVDS

(Model:

1270)

Spare Part Number

118165001

123924001

387544001

Maintenance & Service Guide

1. 4.3-GB Hard Drive 123927-001 (Models: 1270 and 1670)

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

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.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

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

1. Hard Drive and Diskette Drive Cable

2. CD or DVD Drive Cable

3. Modem Cable

1 each

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

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

2. LCD Guide FPC

3. Spring Torsion PCMCIA

1 each

4 each

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

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:

330949-001

Description Quantity

1. Door, Battery Pack

2. Cover, Memory Module

3. Door, PCMCIA

4. Display Hinge Cover, (Left)

5. Display Hinge Cover, (Right)

6. CD Drive Guide

7. Rubber Plug (A)

8. Rubber Plug (B)

9. Rubber Foot

10. Latch (Right)

11. Latch (Left)

1 each

4 each

8 each

2 each

Maintenance & Service Guide

Miscellaneous Screw Kit (Not Shown) 330959-001

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Miscellaneous Parts

Presario Series

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

Parts

1. AC Adapter

2. Port Replicator

298239001

102270001

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

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, Belgium Windows 98 France Windows 98 Germany Windows 98 Netherlands Windows 98 UK Windows 98

Quick Reference Guide QuickFind for Windows, North America, Latin America, Asia

Info. Not Available Info. Not Available Info. Not Available Info. Not Available Info. Not Available

Info. Not Available Info. Not Available

Pacific QuickFind for Windows, Europe, Middle East, Africa

Info. 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

-004 April -010 October

-005 May -011 November

-006 June -012 December

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Electrostatic Discharge

A sudden discharge of static electricity from a finger or other conductor can destroy staticsensitive 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. Although, it may function normally for a while, then degrade in the internal layers, reducing its life expectancy.

Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions.

Generating Static

The table shows how different activities generate static electricity and at different electrostatic voltage levels.

Typical Electrostatic Voltages

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

Relative Humidity

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

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Service Considerations

Listed below are some of the considerations that you should keep in mind during the disassembly and assembly of the computer.

Tool and Software Requirements

To service the computer, you need the following:

● Compaq screwdriver kit (Spare Part No. 161946-001)

● Torx T-9 screwdriver

● 3/16-inch and 5mm nut drivers (for screwlocks and standoffs)

● Small, standard screwdriver

● Small, Phillips screwdriver

● Diagnostics software

Screws

The screws used in the computer are not interchangeable. If an incorrect screw is used during the reassembly process, it can damage the unit. Compaq strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations.

IMPORTANT:

As each subassembly is removed from the computer, it should be placed away from the work area to prevent damage.

Return to Removal & Replacement Procedures

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Cables and Connectors

Most cables used throughout the unit are ribbon cables. Cables must be handled with extreme care to avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal from the connector. Handle cables by the connector whenever possible. In all cases, avoid bending, twisting, or tearing the cables, and ensure that the cables are routed in such a way that they cannot be caught or snagged by parts being removed or replaced.

Cables

Use the following precautions when handling cables to avoid damage to the cable or computer:

● Always handle cables by their connectors.

● Avoid bending, twisting, or pulling on the cables.

● Apply minimum required force when seating or unseating the cables from their connectors.

● Place the cables in such a manner that they cannot be caught or snagged by parts being removed or

replaced.

● Handle flex cables with extreme care; they can tear easily.

CAUTION: When servicing these computers, ensure that cables are placed in their proper location during

the reassembly process. Improper cable placement can cause severe damage to the unit.

Select the desired illustration.

Removing a Cable from a ZIF Connector.

The ribbon cable position for the

The cable position for the

speaker assembly.

4.3-GB and 6.4-GB hard drive.

CD or DVD drive.

diskette drive.

Plastic Parts

Plastic parts can be damaged by the use of excessive force during disassembly and reassembly. When handling the plastic parts, use care. Apply pressure only at the points designated in the maintenance instructions.

Return to Removal & Replacement Procedures

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

The computer uses a zero insertion force (ZIF) connector for the keyboard cable to the system board. To remove a cable from a ZIF connector, lift both corners of the ZIF connector and slide simultaneously with constant light force.

CAUTION: A ZIF connector and its

attached cable can be easily damaged. Handle only the connector slide when removing or replacing a cable. Never pull or twist on the cable while it is connected.

Back to

CAUTION: When servicing this

computer, ensure that cables are placed in their proper location during the reassembly process. Improper cable placement can damage the computer.

Cables and Connectors.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

The ribbon cable position for the 4.3-GB and 6.4-GB hard drive.

Back to Cables and Connectors.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

The ribbon cable position for the CD or DVD drive.

Back to Cables and Connectors.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

The ribbon cable position for the diskette drive.

Back to Cables and Connectors.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

The cable position for the speaker assembly.

Back to Cables and Connectors.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Battery Pack

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader

To remove the battery pack, complete the following steps:

1. Slide the battery pack compartment door down and remove it from the battery pack.

Next Step

Processor Hard Drive DVD or

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

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

2. Pull down on the battery pack tab and

pull the battery pack from

the chassis.

To replace the battery pack, reverse the previous procedures.

Return to Removal & Replacement Procedures

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Palmrest Cover with Touch Pad

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Processor Hard Drive

The palmrest cover with touch pad must be removed to gain access to any of the interior components of the computer, and it is the first component that has to be removed to gain access to the interior components.

It is not necessary to remove the display panel

NOTE:

assembly to access the interior components of the computer.

DVD or CD Drive

Battery Charger Board

Modem

Display Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive Fan Assembly System Board

To remove the palmrest cover with touch pad, complete the following steps:

1. Prepare the

computer for disassembly.

2. Close the computer and turn the computer upside down.

3. Remove four screws from the bottom of the computer.

Dip Switch Settings

Memory Module

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

4. Turn the computer over (right side up), pull forward on the display latches to release and open the display assembly.

5. Lift up front end of the palmrest cover with touch pad and remove it from the groove in the chassis.

6. Tilt the palmrest cover with touch pad, allowing it to rest on top of the keyboard, and disconnect the flex cable from the LIF connector on the palmrest cover.

CAUTION: When

replacing the palmrest cover with touch pad, ensure that the cable is fully inserted into the LIF connector on the system board. If the metal end should come in contact with the keyboard, damage may occur to the computer.

To replace the palmrest cover with touch pad, reverse the previous procedures.

When replacing the palm rest cover

NOTE:

Return to Removal & Replacement Procedures

ensure the cable is properly routed through the slot on the Upper CPU cover.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Keyboard

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader Processor Hard Drive DVD or

CD Drive Battery

Charger Board

To remove the keyboard, complete the following steps:

Prepare the computer for disassembly.

2. Remove the palmrest

cover with touch pad.

3. Gently lift and turn the keyboard over allowing it to rest on top of the palmrest cover with touchpad slot opening.

Modem

Display Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive Fan Assembly System Board Dip Switch

Settings Memory

Module

4. Remove the

heatspreader.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Heatspreader

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader Processor Hard Drive DVD or

CD Drive Battery

Charger Board Modem

Display Panel Assembly

Upper CPU Cover

To remove the heatspreader, complete the following steps:

Prepare the computer for disassembly.

2. Remove the palmrest

cover with touch pad.

3. Gently lift and turn the keyboard over allowing it to rest on top of the palmrest cover with touchpad slot opening.

4. Remove two screws from the heatspreader and lift out of the chassis.

Speaker Assembly

Diskette Drive Fan Assembly System Board Dip Switch

Settings Memory

Module

To replace the heatspeader, reverse the previous procedures.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Processor

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader

To remove the processor, complete the following steps:

Prepare the computer for disassembly.

2. Remove the palmrest

cover with touch pad.

3. Remove the keyboard.

Processor Hard Drive DVD or

CD Drive Battery

Charger Board Modem

Display Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive

4. Remove the

heatspreader.

5. Insert a small blade screw driver into the bottom slot opening on the processor and push toward the display to release the processor from the chassis slot.

Fan Assembly System Board Dip Switch

Settings Memory

Module

6. Lift the processor out of the processor chassis slot.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

To replace the processor complete the following steps:

The notch on the upper left corner of the processor serves as an orientation

IMPORTANT:

1. Insert the processor into the slot on the system board.

indicator. Align the notch on the left corner of the processor with the notch on the left corner of the processor chassis slot.

When installing the processor into the chassis slot, be sure that the hole pattern on the

NOTE:

chassis slot lines up with the pins on the processor. The processor should drop into the socket without any force.

2. Insert a small blade screw driver into the top slot opening on the processor and push away from the display to lock the processor.

Return to Removal & Replacement Procedures

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the 4.3-GB or 6.4-GB Hard Drive

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader Processor Hard Drive

To remove the hard drive, complete the following steps:

1. Prepare the

computer for disassembly.

2. Remove the palmrest

cover with touch pad.

3. Remove the

keyboard.

DVD or CD Drive

Battery Charger Board

Modem

Display Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive Fan Assembly System Board

4. Remove two screws from the hard drive mounting bracket and lift out the hard drive with drive mounting bracket attached.

Next Step

Dip Switch Settings

Memory Module

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

5. Disconnect the hard drive data cable from the hard drive and remove from the chassis.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

To remove the hard drive mounting bracket, complete the following steps.

Remove four screws from the hard drive mounting bracket.

To replace the hard drive and hard drive mounting bracket, reverse the previous procedures.

Return to Removal & Replacement Procedures

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the DVD or CD Drive

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader

To remove the DVD or CD drive, complete the following steps:

1. Prepare the

computer for disassembly.

2. Remove the palmrest

cover with touch pad.

3. Remove the keyboard.

Processor Hard Drive DVD or

CD Drive Battery

Charger Board Modem

Display Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive

4. Remove the

heatspreader.

5. Remove two screws located at the back DVD or CD drive.

Next Step

Fan Assembly System Board Dip Switch

Settings Memory

Module

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

6. Remove two screws from the base enclosure which secures the DVD or CD drive to the chassis.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

7. Disconnect the DVD or CD drive cable from the DVD or CD drive and remove the DVD or CD drive from the chassis.

To replace the DVD or CD drive, reverse the previous procedures.

Return to Removal & Replacement Procedures

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Battery Charger Board

Disassembly

To remove the battery charger board, complete the following steps:

Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader Processor Hard Drive DVD or

CD Drive Battery

Charger Board Modem

Display

1. Prepare the

computer for disassembly.

2. Remove the

palmrest cover with touch pad.

3. Remove the

keyboard.

4. Remove the

heatspreader.

5. Remove the

hard drive.

6. Remove one screw from the battery charger board, unplug the board from the connector on the system board, and lift out of the chassis.

Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive Fan Assembly System Board Dip Switch

Settings Memory

Module

To replace the battery charger board, reverse the previous procedures.

When replacing the battery charger board, ensure

NOTE:

the pins are aligned with the connector on the system board.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Modem

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader

To remove the modem, complete the following steps:

1. Prepare the

computer for disassembly.

2. Remove the palmrest

cover with touch pad.

3. Remove the keyboard.

Processor Hard Drive DVD or

CD Drive Battery

Charger Board Modem

Display Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive

4. Remove the

heatspreader.

5. Remove two screws securing modem and pull the modem off the connector on the system board.

Next Step

Fan Assembly System Board Dip Switch

Settings Memory

Module

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

6. Disconnect the modem cable from the modem.

To replace the modem, reverse the previous procedures.

Return to Removal & Replacement Procedures

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Display Panel Assembly

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader Processor

To remove the display panel assembly, complete the following steps:

Prepare the computer for disassembly.

2. Remove the palmrest

cover with touch pad.

3. Remove the keyboard.

Hard Drive DVD or

CD Drive Battery

Charger Board Modem

Display Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive Fan Assembly

4. Remove the

heatspreader.

5. Remove the modem.

6. Disconnect the backlight cable attached to the display panel assembly from the connector on the system board.

System Board Dip Switch

Settings Memory

Module

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

7. Disconnect the flex data cable attached to the display panel assembly from the Low Voltage Differential Signal (LVDS) connector the on the system board.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

8. Close the display panel assembly and push back on top of the hinge covers and

lift up from the bottom edge of the hinge covers to remove the covers off the chassis.

Carefully remove the

IMPORTANT:

display panel assembly hinge covers.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

9. Support the back of the display panel assembly and remove two screws from each of the display panel hinges.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

10. Remove the connector on the end of the display flex

data cable.

Compaq recommends replacing the LVDS interface

IMPORTANT:

connector on the display flex data cable after removing.

CAUTION: The

connector on the end of the flex cable must be removed before the cable can be routed through the slot on the Upper CPU cover.

11. Gently pull the flex data cable and backlight cable attached to the display panel assembly through the slot on the Upper CPU cover and remove the display panel assembly with flex data and backlight cable attached.

When removing the display panel

NOTE:

To replace the display panel assembly, reverse the previous procedures.

Return to Removal & Replacement Procedures

assembly, observe the display panel assembly flex cable routing and position.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Upper CPU Cover

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader

To remove the Upper CPU cover complete the following steps:

1. Prepare the

computer for disassembly.

2. Remove the palmrest

cover with touch pad.

3. Remove the keyboard.

Processor Hard Drive DVD or

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

4. Remove the

heatspreader.

5. Remove the hard

drive.

6. Remove the display

panel assembly.

7. Remove the screw located under the bottom of the unit (rear) which secures the Upper CPU cover to the chassis.

Next Step

Maintenance & Service Guide

Presario Series

Models: 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

8. Remove four screws located on the top of the Upper CPU cover.

9. Lift the Upper CPU cover off the snaps on the chassis which will disconnect the power switch from the connector on the system board.

To replace the Upper CPU cover, reverse the previous procedures.

Return to Removal & Replacement Procedures

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Speaker Assembly

To remove the speaker assembly, complete the following steps:

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader Processor Hard Drive

1. Prepare the

computer for disassembly.

2. Remove the palmrest

cover with touch pad.

3. Remove the keyboard.

4. Remove the

heatspreader.

5. Remove the hard

drive.

DVD or 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

6. Remove the display

panel assembly.

7. Remove the Upper

CPU cover.

8. Remove the charger

board.

9. Disconnect the speaker cables from the system board and remove the speaker assembly from the chassis.

To replace the speaker assembly, reverse the previous procedures.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Diskette Drive

To remove the diskette drive, complete the following steps:

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard

Prepare the computer for disassembly.

2. Remove the

palmrest cover with touch pad.

3. Remove the

keyboard.

4. Remove the

heatspreader.

5. Remove the

hard drive.

6. Remove the

display panel assembly.

Heatspreader Processor Hard Drive DVD or

CD Drive Battery

Charger Board Modem

Display Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive

7. Remove the

Upper CPU cover.

8. Remove the screw from the diskette drive and lift up the diskette drive.

9. Disconnect the diskette drive data cable from the system board.

To replace the diskette drive, reverse the previous procedures.

Fan Assembly System Board Dip Switch

Settings Memory

Module

NOTE:

Ensure the diskette drive eject lever is properly inserted in the chassis slot, when replacing the diskette drive.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Fan Assembly

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack

To remove the fan assembly, complete the following steps:

1. Prepare the

computer for disassembly.

2. Remove the palmrest

cover with touch pad.

Palmrest Cover with Touch Pad

Keyboard Heatspreader Processor Hard Drive DVD or

CD Drive Battery

Charger Board Modem

Display Panel Assembly

Upper CPU Cover

3. Remove the keyboard.

4. Remove the

heatspreader.

5. Remove the display

panel assembly.

6. Remove the hard

drive.

7. Remove the Upper

CPU cover.

Speaker Assembly

Diskette Drive Fan Assembly System Board Dip Switch

Settings Memory

Module

8. Lift the fan assembly from the chassis slot and disconnect the fan cable from the connector on the system board.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

To remove the fan gasket, complete the following step:

Pull the gasket from the fan.

When replacing the fan assembly ensure the

IMPORTANT:

To replace the fan assembly and gasket, reverse the previous procedures.

Return to Removal & Replacement Procedures

arrow (located on the top of the fan gasket) is pointing inward.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the System Board

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader

To remove the system board, complete the following steps:

1. Prepare the

2. Remove the palmrest cover with touch pad.

3. Remove the keyboard.

4. Remove the heatspreader.

5. Remove the processor.

6. Remove the modem.

7. Remove the hard drive.

8. Remove the display panel assembly.

computer for disassembly.

Processor Hard Drive DVD or

CD Drive Battery

Charger Board Modem

Display Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive Fan Assembly

9. Remove the Upper CPU Cover.

10. Remove the battery charger board.

11. Remove the diskette drive.

12. Remove the CD or DVD drive.

13. Remove the fan assembly.

IMPORTANT:

14. Disconnect the

Next Step

When replacing the system board remove the memory module on the system board.

speaker assembly cables.

System Board Dip Switch

Settings Memory

Module

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

15. Remove five standoffs from the system board.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

16. Remove two screws from the DVD or CD Drive mounting rails and remove the mounting rails from the system board.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

17. Remove three screws from the system board.

The

Ethernet

Connector Plug

must be removed before removing the system board. After removing the screws and standoffs from

IMPORTANT:

the system board, remove the

Ethernet

Connector Plug

(located on the left side of the base enclosure) by pushing it out from the inside of the chassis.

Next Step

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

18. Pull the PCMCIA eject lever out (straight), lift up the right side of the system board and pull forward to remove the system board from the chassis.

To replace the system board, reverse the previous procedures.

IMPORTANT:

Dip Switch System Board Settings

Return to Removal & Replacement Procedures

Remove all cables from the system board.

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

For Models: 1670 and 1675

CAUTION: Only change settings 1-5 on SW1 . Settings 6-10 vary by model and should not be changed when replacing the

system board. Ensure the dip switch voltage settings (SW1 model and processor voltage marked on the processor chip. If the system board dip switch voltage settings are not correct, damage may occur to the computer and/or system board.

and SW3 ) on the system board are correct for the computer

NOTE:

The black area on the dip switch indicates the position of the switch.

Return to Removal & Replacement Procedures

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removing the Memory Module

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest Cover

with Touch Pad Keyboard Heatspreader

To remove the memory module, complete the following steps:

1. Prepare the

computer for disassembly.

2. Close the computer and turn the computer upside down.

Processor Hard Drive DVD or

CD Drive Battery

Charger Board Modem

Display Panel Assembly

Upper CPU Cover

Speaker Assembly

Diskette Drive

3. Remove the screw from the memory module door, and slide the memory module door to the right.

Next Step

Fan Assembly System Board Dip Switch

Settings Memory

Module

Maintenance & Service Guide

Presario Series

Models : 1270, 1670, and 1675

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

4. Pull side levers to release the memory module and unplug the memory module from the system board.

To replace the memory module, reverse the previous procedures.

Return to Removal & Replacement Procedures

COMPAQ 1270, 1675 Maintenance & Service Guide

Specifications and Main Features

Frequently Asked Questions

User Manual