Compaq PRESARIO 1694, PRESARIO 1685, PRESARIO 1683, PRESARIO 1690, PRESARIO 1688 User Manual

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Index

Compaq Presario 1600 System

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
symbol conventions, Technician Notes and

Preface shows

Serial Number
locations on the unit. This MSG will be periodically

maintained and updated online as needed.

For content comments or questions, contact Tech Support.

To report a technical problem, contact your Regional Support
Center or IM Help Center.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Index

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.

1998 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

First Edition (March 1999)
Compaq Computer Corporation

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Index

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.

IMPORTANT:

NOTE:

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

CAUTION: Text set off in this manner indicates that failure to follow directions could
result in damage to equipment or loss of data.

Text set off in this manner presents clarifying information or specific instructions.

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

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Index

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

● DVD or CD Drive

● Battery Pack

Physical and Environmental

Computer Specifications

Dimensions

Height
Depth
Width

Weight

Model 1683
Model 1685
Model 1687
Model 1688
Model 1690

Stand-Alone (Battery Pack)

U.S. Metric

1.97 in

12.32 in

10.12 in

(Data not
available)

7.19lbs

7.19 lbs

7.36 lbs

7.76 lbs

5.0 cm

31.3 cm

25.7 cm

(Data not available)
3260 g
3260 g
3340 g
3520 g

Li Ion

Power Requirements

Nominal Operating Voltage
Maximum Operating Power

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

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

(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

Non operating 240 G, 2 ms, half

Vibration

Operating 0.55 G, 0.25

Nonoperating 1.5 G, 0.25 Oct/Min

Applicable product safety standards specify thermal limits for plastic surfaces.

NOTE:

Compaq Presario Series Portable Computers operate well within this range of
temperatures.

sine

sine

Oct/Min sweep rate

sweep rate

System Interrupts

Hardware IRQ System Function

IRQ0
IRQ1
IRQ2
IRQ3 IRQ Holder for PCI Steering

IRQ3 ALi PCI to USB Open Host Controller
IRQ4

IRQ5 IRQ Holder for PCI Steering

System Timer

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

Communications Port (COM1)

System Interrupts

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

IRQ12 Synaptics PS/2 TouchPad
IRQ13 Numeric data processor
IRQ14

Lucent 56K V.90 PCI DF Modem

ALi M5229 PCI Bus Master IDE Controller

IRQ14 Primary IDE controller (dual fifo)
IRQ15

IRQ15 Secondary IDE controller (dual fifo)

System DMA

Hardware DMA System Function

0
1 ESS SOLO-1 DOS Emulation

2 Standard Floppy Disk Controller
3 (free)

ALi M5229 PCI Bus Master IDE Controller

System DMA

(free)

4 Direct memory access controller
5 (free)

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

System I/O Address

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
0170h - 0177h Secondary IDE Controller (dual fifo)

ALi M5229 PCI Bus Master IDE Controller

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
1000h - 103Fh Motherboard Resources
1040h - 105Fh Motherboard Resources
1060h - 106Fh ESS SOLO-1 PCI AudioDrive
1070h - 107Fh ESS SOLO-1 PCI AudioDrive
1400h - 14FFh Lucent 56K V.90 PCI DF Modem
1800h - 183Fh ESS SOLO-1 PCI AudioDrive
1840h - 1847h
1840h - 184Fh
1848h - 184Fh

Primary IDE Controller (dual fifo)
ALi M5229 PCI Bus Master IDE Controller
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

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)

RAGE LT PRO AGP 2X (English)

System Memory Catalog

000C0000h - 000CBFFFh RAGE LT PRO AGP 2X (English)
000DC000h - 000DFFFFh

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

FC100000h - FDFFFFFFh

FC100000h - FC100FFFh RAGE LT PRO AGP 2X (English)
FC120000h - FC13FFFFh RAGE LT PRO AGP 2X (English)

Motherboard Resources

Lucent 56K V.90 PCI DF Modem
PCI Standard PCI-to-PCI bridge

FD000000h - FDFFFFFFh RAGE LT PRO AGP 2X (English)
FFFC0000h - FFFFFFFFh Motherboard Resources

Display

Dimensions

Height
Width

Diagonal Size
Mounting
Number of Colors

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

7.83"

10.8"

12.1" 30.7 cm
Internal
16 M

19.9 cm

25.7 cm

Contrast Ratio
Brightness
Pixel Resolution

Pitch
Format
Configuration

Backlight
Character Display

Total Power Consumption

(Information not available)

13.3" (Diagonal) TFT Display with LVDS

Typical 150:1
Over 120 cd/m~3

0.30 x 0.30 mm
800 x 600
RGB Stripe

Edge Light
80 x 25, 80 x 50

5.4 W (max)

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

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

Pixel Resolution

Pitch
Format
Configuration

U.S. Metric

8.43"

11.2"

0.279 x 0.279 mm
1024 x 768
RGB Stripe

21.42 cm

28.56 cm

Backlight
Character Display

Total Power Consumption 6.6 W (max)

Memory Expansion

Base System Memory Expansion Board Memory Total Memory

32-MB
32-MB
32-MB
64-MB
64-MB

Edge Light
80 x 25

32-MB 64-MB
64-MB 96-MB

128-MB 160-MB

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

Diskette Drive

Diskette Size
Light
Height

Bytes per Sector:

Sectors per Track
High Density
Low Density

Tracks per Side

High Density
Low Density

64-MB

128-MB 192-MB

Diskette Drive

3.5 in
None
.5" / 1.27 cm

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

9

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

Access Times

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

Number of Read/Write Heads

Hard Drive

Capacity Per Drive
Drive Type

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

2

Hard Drives

6.4-GB 4.8-GB

Not Available

6.4-GB 4.8-GB
65 65

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

Sector Interleave

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
1:1 1:1

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

Buffer Size

DVD or CD Drive

Applicable Disk

Center Hole Diameter

Disc Diameter
Disc Thickness
Track Pitch

512 KB 512 KB

CD Drive

24x CD Drive

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

.6" / 15 mm
12 cm, 8 cm

1.2 mm

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

DVD Drive

Applicable Disk

Center Hole Diameter
Access Time

(typical, including setting)

Disc Thickness
Track Pitch
Laser

Beam Divergence

Audio Output Level

Line out
Headphone

Cache Buffer
Data Transfer Rate

(typical, including setting)

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

512 KB/s (CD)

12,000 - 3,000 KB/s (CD)
2705 KB/s (DVD)

Startup Time
Stop time

Battery Pack

Dimensions

Height
Length
Width

Weight

< 5 sec
< 3 sec

Battery Pack

Lithium Ion (Li ion) *

US Metric

.81 in

3.05 in

5.69 in

0.85 Ib

2.05 cm

7.75 cm

14.45 cm
.39 kg

Battery Pack Operating Time
Energy

Voltage
Amp-hour capacity
Watt-hour capacity

Environmental Requirements

Operating Temperature
Non-operating Temperature

2 to 3 hours

14.8 V

3.0 Ah

44.4 Wh

32° F to 113 F

-4° F to 140 ° F

0° to 45° C

-20° to 60° C

Modem

Compliance

Data
Compression

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

Fax Modulation

Command Set

Cable

Top of Page

V. 17
V. 21 (Group III Compatible)
V.29
V.27Ter

Hayes AT
Class 1 Fax

6 Ft. RJ-11 telephone cable

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Parts Catalog

System Unit
System Boards
Display

Assembly
Mass Storage

Devices
Miscellaneous

Cable Kit
Miscellaneous

For the Compaq Presario 1600 Series of Portable Computers listed above,
this section of the Maintenance and Service Guide provides the following
information:

● An illustrated breakdown of components

● Identification of spare parts and the ordering number associated

with each item(s)

Click on the appropriate categories listed to the left.

Index

Hardware Kit
Miscellaneous

Plastics Kit
Miscellaneous

Parts
Documentation

and Software

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard

Introduction

Prior to conducting any removal and/or replacement

IMPORTANT:

Note:

procedures, you should review and fully understand the
section titled "

The Internal Ethernet Card is Not Available for computer
models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and

1694. The Ethernet Plug was removed on later models.

Before You Begin".

Index

Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Network

Interface
Card

Speaker
Assembly

Diskette
Drive

Fan Assembly
System Board
Dip Switch

Settings
Memory

Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Preliminary
Steps

Clearing the
Power-On
Password

Power-On
Self Test
(POST)

Compaq
Diagnostics

Diagnostic
Error Codes

Solving
Minor
Problems

Contacting
Compaq
Support

Introduction

This section covers troubleshooting information for the above
listed Compaq Presario 1600 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.

Index

NOTE:

If the problem is intermittent, check the computer
several times to verify that the problem is solved

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Index

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

The power consumption requirements for PC

NOTE:

Cards vary widely. Some cards drain the battery
pack very rapidly.

Minimizing the Energy Required

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.

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.

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.

Top of Page

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Product Description

Models and
Features

Controls and
Lights

Front Bezel
Lights

Front Bezel
Buttons

Left Side
Components

Right Side
Components

Underside of
Unit

Rear Connectors
Power

Management for
Windows 98

Index

The
Compaq
Presario
1600 Series
Computers,
the new
generation
of
multimedia
portables,
present an
innovative
and
integrated
design,
outstanding
audio and
video,
advanced
core
features,
and
attractive
styles. This
fully
functional
AMD-K6­based
portable
computer
allows full
desktop
versatility.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Index

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

● Serial Connector

● Keyboard/Mouse

● External VGA Monitor

● Universal Serial Bus

● Modem

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

1

2

3

4

5

Carrier Detect

Receive Data

Transmit Data

Data Terminal Ready

Signal Ground

6

7

8

9

Data Set Ready

Ready to Send

Clear to Send

Ring Indicator

Keyboard/Mouse

Connector Pin Signal

1

2

Data 1

Data 2

3

4

5

6

External VGA Monitor

Ground

+5 V

Clock 1

Clock 2

Connector Pin Signal

1

2

3

Red Analog

Green Analog

Blue Analog

4

5

6

7

8

9

10

11

Not connected

Ground

Ground Analog

Ground Analog

Ground Analog

Not connected

Ground

Monitor Detect

12

13

14

15

Universal Serial Bus

DDC2B Data

Horizontal Sync

Vertical Sync

DDC2B Clock

Connector Pin Signal

1

+5V
Data -

2

Data +

3

Ground

4

Modem

Connector Pin Signal

1

2

3

4

5

6

Unused

Unused

Tip

Ring

Unused

Unused

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Before You Begin

Electrostatic
Discharge

Service
Considerations

Preparation
for
Disassembly

Index

Report the computer serial
number to Compaq when

requesting information or
ordering spare parts.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Before You Begin

Electrostatic
Discharge

Service
Considerations

Preparation
for
Disassembly

Electrostatic Discharge

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. Although, it may function
normally for a while, then degrade in the internal layers,
reducing its life expectancy.

Index

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

2,000 V 700 V 400 V

tubes
Removing DIPS from vinyl

11,500 V 4,000 V 2,000 V

trays
Removing DIPS from

14,500 V 5,000 V 3,500 V

Styrofoam
Removing bubble pack from

26,000 V 20,000 V 7,000 V

PCBs
Packing PCBs in foam-lined

21,000 V 11,000 V 5,000 V

box
NOTE: 700 volts can degrade

a product.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Before You Begin

Electrostatic
Discharge

Service
Considerations

Preparation
for
Disassembly

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

Index

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.

As each subassembly is removed from the computer, it

IMPORTANT:

should be placed away from the work area to prevent
damage.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Before You Begin

Electrostatic
Discharge

Service
Considerations

Preparation
for
Disassembly

Preparing the Computer for Disassembly

1. Disconnect AC power and any external devices.

2. Remove the battery pack.

3. Remove any PC Cards.

IMPORTANT:

The battery pack should be removed before performing any
internal maintenance on the computer.

Index

NOTE:

WARNING: Metal objects can damage the battery pack as well as the

battery contacts in the battery compartment. To prevent damage, do
not allow metal objects to touch the battery contacts. Place only the
battery pack for the Compaq Presario Series Portable Computers into
the battery compartment. Do not force the battery pack into the bay
if insertion does not occur easily.

CAUTION: Do not crush, puncture, or incinerate the battery pack. Do

not open a battery pack, as this damages the pack, makes it
unusable, and exposes potentially harmful battery components.
There are no field-serviceable parts located inside the battery pack.

The Compaq Presario Series Portable Computers have several screws
of various sizes which are not interchangeable. Care must be taken
during reassembly to ensure that the correct screws are used in their
correct location. During removal please keep respective screws with
their associated sub-assembly.

Presario 1600 Series

(Models: 1685, 1687, 1688, 1690, 1692, 1693, 1694) 141706-001

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Parts Catalog

System Unit

System Boards
Display

Assembly
Mass Storage

Devices
Miscellaneous

Cable Kit
Miscellaneous

System Unit

Index

Part Description Spare Part Number

1. Keyboard

2. Palmrest Cover w/TouchPad
and Button Board (Models: 1687,
1688, 1690, 1693, 1694)

2. Palmrest Cover w/TouchPad and
Button Board (Models: 1683, 1685,
1688, 1692)

3. Upper CPU Cover w/Power Switch

4. Speaker Assembly w/Cables

142654-001

142653-001

141846-001
148108-001

Hardware Kit
Miscellaneous

Plastics Kit
Miscellaneous

Parts
Documentation

and Software

5. Base Enclosure

6. Battery Pack L ion Enhancement
(Models: 1683, 1685, 1687, 1688,

1690)

6. Battery Pack L ion Enhancement
(Models: 1692, 1693, 1694)

141845-001
388647-001

138-184-001

1600 Series CTO Description Spare Part Number

1. Keyboard

2. Palmrest Cover w/TouchPad and

Button Board

3. Battery

4. Port Replicator

EAB
142654-001
sLiON

400384-001

Presario 1600 Series

350-Mhz (Model: 1683) 122698-001

32-MB (Models: 1683,1685, 1687) 122699-001

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Parts Catalog

System Unit

System
Boards

Display
Assembly

Mass Storage
Devices

Miscellaneous
Cable Kit

System Boards

Index

Description Spare Part Number

1. Heatspreader 122702-001

2. Voltage Converter Board 352891-001

3. Modem 56K Data/Fax w/o SRAM 400445-001

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

Intl

4. Processor AMD K6

143848-001

Miscellaneous
Hardware Kit

Miscellaneous
Plastics Kit

Miscellaneous
Parts

Documentation
and Software

5. System Board w/512K Cache 144018-001 (models 1683-1690)

158848-001 (models 1692-1694)

6. Fan Assembly 400444-001

7. System Memory

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Parts Catalog

System Unit
System Boards

Display
Assembly

Mass Storage
Devices

Miscellaneous
Cable Kit

Miscellaneous
Hardware Kit

Miscellaneous
Plastics Kit

Miscellaneous
Parts

Display Assembly

Index

Description

1. Display

12.1 TFT

(Models:
1683,
1685,
1687,

1692)

2. Display

13.3 TFT
w/LVDS

(Model:

1688)

3. Display

14.1 TFT
w/LVDS

(Model:
1690,
1693,

1694)

Spare
Part
Number

142304­001

142305­001

142306­001

Documentation
and Software

Presario 1600 Series

1.) 3.2-GB Hard Drive 142309-001 (Model: 1683)

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Parts Catalog

System Unit
System Boards
Display

Assembly

Mass Storage
Devices

Miscellaneous
Cable Kit

Miscellaneous

Mass Storage Devices

Use the scroll down menu for the description and spare part number.

Index

Hardware Kit
Miscellaneous

Plastics Kit
Miscellaneous

Parts
Documentation

and Software

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Parts Catalog

System Unit
System Boards
Display

Assembly
Mass Storage

Devices

Miscellaneous
Cable Kit

Miscellaneous
Hardware Kit

Miscellaneous
Plastics Kit

Miscellaneous
Parts

Documentation

Miscellaneous Cable Kit

Index

Miscellaneous
Cable Kit
Spare Part
Number:
330946-001

1a.

Diskette
Drive
Cable

1b. Hard
Drive
Cable

1c. CD or
DVD
Drive
Cable

1d.
Touchpad
Cable

1e.

Modem
Cable

1
each

1
each

1
each

1
each

1
each

and Software

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Parts Catalog

System Unit
System Boards
Display

Assembly
Mass Storage

Devices
Miscellaneous

Cable Kit

Miscellaneous
Hardware Kit

Miscellaneous Hardware Kit

Index

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

1 each

4 each

Miscellaneous
Plastics Kit

Miscellaneous
Parts

Documentation
and Software

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Parts Catalog

System Unit
System Boards
Display

Assembly
Mass Storage

Devices
Miscellaneous

Cable Kit
Miscellaneous

Hardware Kit

Miscellaneous
Plastics Kit

Miscellaneous Plastics Kit

Index

Miscellaneous Plastics Kit
Spare Part Number: 142657­001

Description Quantity

1. Door, Battery Pack 1 each

2. Cover, Memory

Module

3. Door, PCMCIA 1 each

4. Display Hinge

Cover, (Left)

5. Display Hinge
Cover, (Right)

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

1 each

1 each

1 each

Miscellaneous
Parts

Documentation
and Software

11. Latch (Left) 2 each

Presario 1600 Series

1. AC Adaptor (Model: 1685) 293831-AA1

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Parts Catalog

System Unit
System Boards
Display

Assembly
Mass Storage

Devices
Miscellaneous

Cable Kit
Miscellaneous

Miscellaneous Parts

2. Port Replicator

3. Return Kit

4. Logo Kit

Index

102270-001
293799-001
141848-001

Hardware Kit
Miscellaneous

Plastics Kit

Miscellaneous
Parts

Documentation
and Software

Presario 1600 Series

Belgium Windows 98

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Parts Catalog

System Unit
System Boards
Display

Assembly
Mass Storage

Devices
Miscellaneous

Cable Kit
Miscellaneous

Hardware Kit
Miscellaneous

Plastics Kit
Miscellaneous

Parts

Index

Documentation and Software

Description
Quick Restore CD

[FrontPage Save Results Component]

Reference Guide

QuickFind for Windows, North America,
Latin America, Asia Pacific

QuickFind for Windows, Europe, Middle
East, Africa

*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.

Spare Part Number

Info. Not Available
Info. Not Available

Info. Not Available

Documentation
and Software

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

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest Cover

with Touch Pad
Heatspreader

Prior to conducting any removal and/or replacement procedures, you should review and fully understand
the section titled "

Before You Begin".

Cables and Connectors (main page)

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.

Index

Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery Charger

Board
Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette Drive

Cables

In order to gain access to the cables, you must first remove the Battery

NOTE:

Pack and the Palmrest Cover with Touch Pad. Those steps are covered in the

Removal Sequence listed to the left.

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.

Fan Assembly
System Board
Dip Switch

Settings
Memory Module

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 4.3-GB and 6.4-GB hard drive.

● The ribbon cable position for the CD or DVD drive.

● The ribbon cable position for the diskette drive.

● The cable position for the speaker assembly.

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.

zif-cable.gif (10259 bytes)

maintenance & service guide

Compaq Presario 1600 Series

Models 1683, 1685 & 1692, 1687 & 1694, 1688, 1690 & 1693,

CTO

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest Cover

with Touch Pad
Heatspreader
Keyboard
Processor
Hard Drive

Prior to conducting any removal and/or replacement procedures, you should review and fully understand
the section titled "

Before You Begin".

ZIF Connectors

Index

Removing a ZIF Cable

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.

A ZIF connector and its attached
cable can be easily damaged.
Handle only the connector slide

CAUTION:

when removing or replacing a
cable. Never pull or twist on the
cable while it is connected.

DVD or
CD Drive

Battery
Charger Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Network

Interface Card
Speaker

Assembly

Back to Cables and Connectors main page.

Diskette Drive
Fan Assembly

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.

System Board
Dip Switch

Settings
Memory Module

maintenance & service guide

Compaq Presario 1600 Series

Models 1683, 1685 & 1692, 1687 & 1694, 1688, 1690 & 1693,

CTO

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Cables and Connectors

Battery Pack
Palmrest Cover with Touch Pad
Heatspreader

Prior to conducting any removal and/or replacement procedures, you should review and fully understand
the section titled "

Removal Sequence

Before You Begin".

Index

Hard Drive Ribbon

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

Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery Charger Board
Modem
Display Panel Assembly
Upper CPU Cover
Network Interface Card
Speaker Assembly
Diskette Drive
Fan Assembly
System Board
Dip Switch Settings
Memory Module

Back to Cables and Connectors main page.

maintenance & service guide

Compaq Presario 1600

Series

Models 1683, 1685 & 1692, 1687 & 1694, 1688,

1690 & 1693, CTO

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should
review and fully understand the section titled "

DVD or CD Drive Ribbon

The ribbon cable position for the DVD or CD drive ribbon.

Index

Before You Begin".

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Network

Interface
Card

Back to Cables and Connectors main page.

Speaker
Assembly

Diskette
Drive

Fan Assembly
System Board
Dip Switch

Settings
Memory

Module

maintenance & service guide

Compaq Presario 1600

Series

Models 1683, 1685 & 1692, 1687 & 1694, 1688,

1690 & 1693, CTO

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should
review and fully understand the section titled "

Diskette Drive Ribbon

The ribbon cable position for the diskette drive.

Index

Before You Begin".

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Network

Interface
Card

Back to Cables and Connectors main page.

Speaker
Assembly

Diskette
Drive

Fan Assembly
System Board
Dip Switch

Settings
Memory

Module

maintenance & service guide

Compaq Presario 1600 Series

Models 1683, 1685 & 1692, 1687 & 1694, 1688, 1690 & 1693,

CTO

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Cables and Connectors

Battery Pack
Palmrest Cover with Touch Pad
Heatspreader

Prior to conducting any removal and/or replacement procedures, you should review and fully understand
the section titled "

Removal Sequence

Before You Begin".

Index

Speaker Cable Assembly

The cable position for the speaker assembly.

Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery Charger Board
Modem
Display Panel Assembly
Upper CPU Cover
Network Interface Card
Speaker Assembly
Diskette Drive
Fan Assembly
System Board

Back to Cables and Connectors main page.

Dip Switch Settings
Memory Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack

Palmrest
Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should review and fully understand
the section titled "

Before You Begin".

Removing the Battery Pack (step 1)

Index

Slide the battery pack

1.

compartment door down and
remove it from the battery
pack.

Next Step

Heatspreader
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

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack

Palmrest
Cover with
Touch Pad

Heatspreader

Prior to conducting any removal and/or replacement procedures, you should review and fully understand
the section titled "

Before You Begin".

Removing the Battery Pack (step 2)

Index

Pull down on the battery pack tab and

pull the battery pack from the chassis.

To replace the battery pack, reverse the
previous procedures.

Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Network

Interface
Card

Speaker
Assembly

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack

Palmrest
Cover with
Touch Pad

Heatspreader

Prior to conducting any removal and/or replacement procedures, you should
review and fully understand the section titled "

Removing the Palmrest Cover
with Touch Pad

Index

Before You Begin".

You must remove the
palmrest cover with
touchpad to gain
access to the interior
components, and it is
the first step in the
sequence of removal
and replacement.

Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly

It is not
necessary to
remove the
display panel

NOTE:

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

assembly to
access the
interior
components of
the computer.

1. Prepare the

computer for
disassembly.

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

2. Close the

computer and
turn the
computer upside
down.

3. Remove four

screws from the
underside of the
computer.

Next Step

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack

Palmrest
Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the Palmrest Cover with
Touch Pad (steps 4 & 5)

Index

Before You Begin".

Previous Step

4. Turn the

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

DVD or
CD Drive

Battery
Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive
Fan

Assembly

5. Lift up front

end of the
palmrest
cover with
touch pad and
remove it
from the

Next Step

groove in the
chassis.

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack

Palmrest
Cover with
Touch Pad

Heatspreader
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

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the Palmrest Cover with
Touch Pad (step 6)

Index

Before You Begin".

Previous Steps

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.

NOTE:

When
replacing the
palm rest
cover ensure
the cable is
properly
routed
through the
slot on the
Upper CPU
cover.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader

Keyboard

Prior to conducting any removal and/or replacement procedures, you should
review and fully understand the section titled "

Heatspreader Removal (steps 1 - 3)

Prepare the computer for disassembly.

1.

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.

Index

Before You Begin".

Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive

Next Step

Fan Assembly
System Board
Dip Switch

Settings
Memory

Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Heatspreader Removal (step 4)

Index

Before You Begin".

Previous Steps

4. Remove the

screws from the
heatspreader
and lift out of the
chassis.

Heatspreader

Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Network

Interface
Card

To replace the
heatspreader, reverse
the previous
procedures.

Speaker
Assembly

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the Keyboard

Before You Begin".

Index

Prepare the

1.

computer for
disassembly.

2. Remove the

palmrest cover
with touch pad.

Heatspreader

Keyboard

Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly

3. Gently lift Zif
Socket and
remove
keyboard.

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the Processor

Before You Begin".

Index

Prepare the

1.

computer for
disassembly.

2. Remove the

palmrest cover
with touch pad.

Heatspreader
Keyboard

Processor

Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive
Fan

Assembly

3. Remove the

keyboard.

4. Remove the

heatspreader.

5. Insert a small

blade screw
driver into the
top slot opening
on the processor
and push away
from the display
to release the
processor from
the chassis slot.

6. Lift the processor

out of the
processor chassis
slot.

Next Step (Replacing

the Processor)

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard

Processor

Hard Drive

Prior to conducting any removal and/or replacement procedures, you should
review and fully understand the section titled "

Replacing the Processor

Index

Before You Begin".

Previous Step

(Removing the
Processor)

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

DVD or
CD Drive

Battery
Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Network

Interface
Card

Speaker
Assembly

IMPORTANT:

1. Insert the

processor into
the slot on the
system board.

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

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

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

NOTE:

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
bottom slot
opening on the
processor and
push toward the
display to lock
the processor.

Return

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor

Hard Drive

DVD or
CD Drive

Battery
Charger
Board

Modem

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the Hard Drive (steps 1 -

4)

Before You Begin".

Index

Prepare the

1.

computer for
disassembly.

2. Remove the

palmrest cover
with touch pad.

3. Remove the

keyboard.

4. Remove two

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

Next Step

Display Panel
Assembly

Upper CPU
Cover

Speaker
Assembly

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the Hard Drive (step 5)

Index

Before You Begin".

Previous Steps

5. Disconnect the

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

Heatspreader
Keyboard
Processor

Hard Drive

DVD or
CD Drive

Battery
Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly

Next Step

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the Hard Drive (step 6)

Before You Begin".

Index

Previous Steps

6. Remove four

screws from
the hard
drive
mounting
bracket.

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

procedures.

Hard Drive

DVD or
CD Drive

Battery
Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive

Return

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive

DVD or
CD Drive

Battery
Charger
Board

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removal of DVD or CD Drive

Before You Begin".

Index

Prepare the

1.

computer for
disassembly.

2. Remove the

palmrest cover
with touch pad.

3. Remove the

keyboard.

4. Remove the

heatspreader.

5. Remove two

screws located at
the back of the
DVD or CD drive.

Next Step

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive
Fan

Assembly
System

Board
Dip Switch

Settings
Memory

Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removal of DVD or CD Drive (step 6)

Index

Before You Begin".

Previous Steps

6. Remove two

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

Keyboard
Processor
Hard Drive

DVD or
CD Drive

Battery
Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly

Next Step

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removal of DVD or CD Drive (step 7)

Index

Before You Begin".

Previous Steps

7. Disconnect the

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

Keyboard
Processor
Hard Drive

DVD or
CD Drive

Battery
Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly

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

Return

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive

Battery
Charger
Board

Modem

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the Battery Charger
Board

Before You Begin".

Index

Prepare the

1.

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 scre

from the battery
charger board,
unplug the board
from the
connector on the
system board,
and lift out the
chassis.

Display 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,

NOTE:

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

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the Modem (steps 1 - 5)

Before You Begin".

Index

Prepare the

1.

computer for
disassembly.

2. Remove the

palmrest cover
with touch pad.

3. Remove the

keyboard.

4. Remove the

heatspreader.

5. Remove three

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

Next Step

Modem

Display Panel
Assembly

Upper CPU
Cover

Speaker
Assembly

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the Modem (step 6)

Index

Before You Begin".

Previous Steps

6. Disconnect the

modem cable
from the
modem.

To replace the
modem, reverse the
previous procedures.

Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem

Display Panel
Assembly

Upper CPU
Cover

Speaker
Assembly

Return

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the Display Panel Assembly

Before You Begin".

Index

Prepare the

1.

computer for
disassembly.

2. Remove the

palmrest cover
with touch pad.

3. Remove the

keyboard.

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.

Display Panel
Assembly

Upper CPU
Cover

Speaker
Assembly

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Next Step

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the Display Panel Assembly
(step 7)

Index

Before You Begin".

Previous Step

7. Disconnect the

flex data cable
attached to the
display panel
assembly
from either
the TFT

connector
or the Low
Voltage
Differential
Signal (LVDS)

Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem

Display Panel
Assembly

Upper CPU
Cover

Speaker
Assembly

Diskette
Drive

connector
on the system
board.

Next Step

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the Display Panel
Assembly (step 8)

Before You Begin".

Index

Previous Step

Close the display

8.

panel assembly
and push back

on top of the
hinge covers and

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem

Display Panel
Assembly

Upper CPU
Cover

Speaker
Assembly

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

IMPORTANT:

Next Step

Carefully
remove
the
display
panel
assembly
hinge
covers.

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor

Prior to conducting any removal and/or replacement procedures, you should
review and fully understand the section titled "

Removing the Display Panel
Assembly (step 9)

Index

Before You Begin".

Previous Step

9. Support the

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

Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem

Display Panel
Assembly

Upper CPU
Cover

Speaker
Assembly

Diskette
Drive

Fan
Assembly

Next Step

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the Display Panel
Assembly
(steps 10 -11)

Index

Before You Begin".

Previous Step

10. Remove the

connector on the end
of the display flex

data cable.

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem

Display Panel
Assembly

Upper CPU
Cover

Speaker
Assembly

IMPORTANT:

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.

Compaq
recommends
replacing
the LVDS
interface
connector
on the
display flex
data cable
after
removing.

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

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
assembly, observe

NOTE:

the display panel
assembly flex cable
routing and
position.

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

Return

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly

Upper CPU
Cover

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the Upper CPU Cover

Before You Begin".

Index

Prepare the

1.

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.

7. Remove the

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

Next Step

Speaker
Assembly

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the Upper CPU Cover
(steps 8 - 9)

Index

Before You Begin".

Previous Step

8. Remove four

screws located
on the top of
the Upper CPU
cover.

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly

Upper CPU
Cover

Speaker
Assembly

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

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover

Speaker
Assembly

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the Speaker Assembly

Index

Before You Begin".

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 the

display panel
assembly.

7. Remove the

upper CPU cover.

8. Remove the

battery charger
board.

9. Disconnect the

speaker cables
from the system

board and

remove the
speaker assembly
from the chassis.

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

To replace the speaker
assembly, reverse the
previous procedures.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the Diskette Drive

Before You Begin".

Index

Prepare the

1.

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.

7. Remove the

upper CPU cover.

8. Remove the

battery charger
board.

9. Remove the

speaker
assembly.

10. Disconnect the

diskette drive
data cable from
the system
board.

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

To replace the diskette
drive, reverse the
previous procedures.

Ensure the
diskette drive
eject lever is
properly

NOTE:

inserted in the
chassis slot,
when replacing
the diskette
drive.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Fan Assembly

Before You Begin".

Index

Prepare the

1.

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.

7. Remove the

Upper CPU cover.

8. Lift the fan

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

Speaker
Assembly

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Next Step

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Fan Assembly

Before You Begin".

Index

Previous Steps

9. Pull the gasket

from the fan.

When
replacing
the fan
assembly
ensure
the
arrow

IMPORTANT:

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

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

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

Return

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive

Prior to conducting any removal and/or replacement procedures, you should
review and fully understand the section titled "

System Board

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 processor.

6. Remove the modem.

7. Remove the hard drive.

8. Remove the display panel assembly.

9. Remove the Upper CPU cover.

10. Remove the battery charger board.

11. Remove the speaker assembly.

12. Remove the diskette drive.

13. Remove the CD or DVD drive.

14. Remove the fan assembly.

Index

Before You Begin".

Battery
Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive
Fan Assembly

System Board

Dip Switch
Settings

IMPORTANT:

Next Step

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

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the System Board (step

15)

Index

Before You Begin".

Previous Steps

15. Remove five

standoffs from
the system board.

Next Step

Heatspreader
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

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Removing the System Board (step

16)

Index

Before You Begin".

Previous Step

16. Remove two

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

Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive

Next Step

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the System Board (step

17)

Index

Before You Begin".

Previous Step

17. Remove three

screws from the
system board.

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly

Next Step

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor

Prior to conducting any removal and/or replacement procedures, you should review and
fully understand the section titled "

Removing the System Board (step

18)

Index

Before You Begin".

Previous Step

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.

Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive

To replace the system
board, reverse the
previous procedures.

Remove
all
cables

IMPORTANT:

Dip Switch System
Board Settings

Return

from
the
system
board.

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader

Prior to conducting any removal and/or replacement procedures, you should
review and fully understand the section titled "

Dip Switch Settings

Click here for more dip switch settings.

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
board are correct for the computer model and

Index

Before You Begin".

and SW3 ) on the system

Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly

NOTE:

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.

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

Diskette
Drive

Fan Assembly
System Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard

Prior to conducting any removal and/or replacement procedures, you should
review and fully understand the section titled "

Dip Switch Settings

Click here for more dip switch settings.

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
on the system board are correct for the computer 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.

Index

Before You Begin".

and SW3 )

Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Network

Interface
Card

NOTE:

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

Speaker
Assembly

Diskette
Drive

Fan
Assembly

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive
DVD or

CD Drive
Battery

Charger
Board

Prior to conducting any removal and/or replacement procedures, you should review
and fully understand the section titled "

Memory Module

Index

Before You Begin".

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.

3. Remove the

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

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive
Fan

Assembly
System

Board
Dip Switch

Settings

Next Step

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Removal and Replacement

IMPORTANT:

Removal

Sequence

Cables and
Connectors

Battery Pack
Palmrest

Cover with
Touch Pad

Heatspreader
Keyboard
Processor
Hard Drive

Prior to conducting any removal and/or replacement procedures, you should
review and fully understand the section titled "

Removing the Memory Module (step

4)

Index

Before You Begin".

Previous Steps

4. Pull side

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

DVD or
CD Drive

Battery
Charger
Board

Modem
Display Panel

Assembly
Upper CPU

Cover
Speaker

Assembly
Diskette

Drive
Fan

Assembly

To replace the
memory module,
reverse the
previous
procedures.

Return

System
Board

Dip Switch
Settings

Memory
Module

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Preliminary
Steps

Clearing the
Power-On
Password

Power-On
Self Test
(POST)

Compaq
Diagnostics

Diagnostic
Error Codes

Solving
Minor
Problems

Contacting
Compaq
Support

Preliminary Steps

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 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

Preliminary Steps.

Index

problem is solved, do not complete the remaining
recommended actions.

If the problem is intermittent, check the computer

Note:

several times to verify that the problem is solved.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Preliminary
Steps

Clearing the
Power-On
Password

Power-On
Self Test
(POST)

Compaq
Diagnostics

Diagnostic
Error Codes

Solving
Minor
Problems

Running POST

To run POST, complete the following steps:

● 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.

If the system is not functioning well enough to run POST, or if the

NOTE:

display is not functioning well enough to show POST error messages,
refer to the Troubleshooting tables.

The following routines are sorted by their test point

NOTE:

numbers assigned in the BIOS code. Their actual orders

Index

Contacting
Compaq
Support

as executed during POST can be quite different.

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

Load alternate registers with initial POST

11h

values
Restore CPU control word during warm

12h

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
22h

1-3-1-1
1-3-1-3

Test DRAM refresh

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

2Ch 1-3-4-2

RAM failure on address line xxxx*

RAM failure on data bits xxxx* of low byte

2Eh 1-3-4-3

of memory bus

2Fh

Enable cache before system BIOS shadow

RAM failure on data bits xxxx*of high byte

30th 1-4-1-1

memory bus

32h
33h
36h
38h
3Ah
3Ch
3Dh
42h
45h
46h 2-1-2-3
48h
49h
4Ah

Test CPU bus-clock frequency

Initialize Phoenix Dispatch Manager

Warm start shut down

Shadow system BIOS ROM

Autosize cache

Advanced configuration of chipset registers

Load alternate registers with CMOS values

Initialize interrupt vectors

POST device initialization

Check ROM copyright notice

Check Video configuration against CMOS

Initialize PCI bus and devices

Initialize all video adapters in system

4Bh
4Ch
4Eh
50Eh
51h
52h
54h
58h 2-2-3-1
59h
5Ah
5Bh
5Ch
60h

QuietBoot start (optional)

Shadow video BIOS ROM

Display BIOS copyright notice

Display CPU type and speed

Initialize EISA board

Test keyboard

Set key click if enabled

Test for unexpected interrupts

Initialize POST display service

Display prompt "Press F2 to enter SetUP"

Disable CPU cache

Test RAM between 512 and 640 KB

Test extended memory

62h
64h
66h
67h
68h

69h
6Ah

6Bh
6Ch

6Eh
70h

Test extended memory address lines

Jump to UserPatchI

Configure advanced cache registers

Initialize Multi Processor APIC

Enable external and CPU cache

Setup System Management Mode (SMM)

area

Display external L2 cache size

Load custom defaults (optional)

Display shadow-area message

Display possible high address for UMB

recovery

Display error messages

72h
76h
7Ch
7Eh
80h
81h
82h
83h
84h
85h
86h

87h

Check for configuration errors

Check for keyboard errors

Set up hardware interrupt vectors

Initialize coprocessor if present

Disable onboard Super I/O ports and IRQs

Late POST device initialization

Detect and install external RS232 ports

Configure non-MCD IDE controllers

Detect and install external parallel ports

Initialize PC-compatible PnP ISA devices

Reinitialize onboard I/O ports

Configure Motherboard Configurable

Devices (optional)

88h
89h
8Ah
8Bh
8Ch
81h
90h
91h
92h
93h
95h
96h
97h

Initialize BIOS Data Area

Enable Non-Maskable Interrupts (NMIs)

Initialize Extended BIOS Data Area

Test and initialize PS/2 mouse

Initialize floppy controller

Determine number of ATA drives (optional)

Initialize hard disk controllers

Initialize local-bus hard disk controllers

Jump to UserPatch2

Build MPTABLE for multi-processor boards

Install CD ROM for boot

Clear huge ES segment register

Fixup Multi Processor table

98h 1-2
99h

9Ah
9Ch
9Dh
9Eh
9Fh
A0h
A2h
A4h
A8h
AAh

Search for option ROMs. One long, two

short beeps on checksum failure

Check for SMART drive (optional)

Shadow option ROMs

Set up Power Management

Initialize security engine (optional)

Enable hardware interrupts

Determine number of ATA and SCSI drives

Set time of day

Check key lock

Initialize Typematic rate

Erase F2 prompt

Scan for F2 key stroke

ACh
AEh
B0h

B2h
B4h

B5h
B6h
B9h
BAh
BBh
BCh
BDh

Enter Setup

Clear Boot flag

Check for errors

POST done - prepare to boot operating

system

1 One shot beep before boot

Terminate QuietBoot (optional)

Check password (optional)

Prepare Boot

Initialize DMI Parameters

Initialize PnP Option ROMs

Clear parity checkers

Display MultiBoot menu

BEh
BFh
C0h
C1h

C2h

C3h
C4h
C5h
C6h
C7h
C8h
C9h
D2h

Clear screen (optional)

check virus and back up reminders

Try to boot with INT 19

Initialize POST Error Manager (PEM)

Initialize error logging

Initialize error display function

Initialize system error handler

PnPnd dual CMOS (optional)

Initialize notebook docking (optional)

Initialize notebook docking late

Force check (optional)

Extended checksum (optional)

Unknown interrupts

Code Beeps For Boost Block in Flash ROM

E0h Initialize the chipset
E1h Initialize the bridge
E2h Initialize the CPU
E3h Initialize system timer
E4h Initialize system 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
F2h Initialize Video
F3h Initialize beeper
F4h Initialize boot
F5h Clear Huge segment
F6h Boot to Mini DOS
F7h Boot to Full DOS

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Preliminary
Steps

Clearing
the Power­On
Password

Power-On
Test
(POST)

Compaq
Diagnostics

Diagnostic
Error
Codes

Solving
Minor
Problems

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

Index

Contacting
Compaq
Support

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.

Top of Page

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. The Compaq Diskette diskette is Not Available.

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. From the Diagnostics Menu, 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.

Top of Page

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Preliminary
Steps

Clearing the
Power-On
Password

Power-On
Test (POST)

Compaq
Diagnostics

Diagnostic
Error Codes

Solving
Minor
Problems

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

Index

Contacting
Compaq
Support

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.

Ensure that there is no diskette in the

IMPORTANT:

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

Close the display and all exterior doors of the computer.

4.

5. Pack the computer with sufficient packing material to protect it. Use the

original packing box or similar packaging.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Preliminary
Steps

Clearing
the Power­On
Password

Power-On
Test
(POST)

Compaq
Diagnostics

Diagnostic
Error
Codes

Solving
Minor
Problems

Contacting
Compaq
Support

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:

For the removal and replacement of a particular subassembly, see

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

Retest the system after completing each step. If the problem has
been resolved, do not proceed with the remaining steps.

Index

Removal and

600 through 699 Diskette Drive Test
1101 Serial Test
1701 through 1736 Hard Drive Test
501 through 516 Video Test
2402 through 2456 Audio Test
2458 through 2480 Touch Pad Pointing Device Test
3206 CD Test
3301 through 6623
8601 through 8602

Processor Test Error Codes

Error
Code

101-xx
102-xx Coprocessor or Weitek Error

CPU test failed Replace the processor and retest.

Description Recommended Action

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
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

retest.

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
202-xx Memory system ROM checksum

failed
203-xx Write/Read test failed 1. Remove the memory module

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

301-xx Failed Selftest/Interface Test

1. Flash the system ROM and

retest.

2. Replace the system board

and retest.

and retest.

2. Install a new memory module

and retest.

1. Check the keyboard

connection. If disconnected,
turn off the computer and
connect the keyboard.

2. Replace the keyboard and

302-xx Failed Individual Key Test

retest.

3. Replace the system board

304-xx Failed Keyboard Repeat Test

and retest.

Parallel Printer Test Error Codes

401-xx Printer failed or not connected

402-xx Failed Port Test

403-xx Printer pattern test failed

Diskette Drive Test

600-xx
601-xx

602-xx
603-xx

604-xx

Diskette ID drive types test

failed

Diskette format failed

Diskette read test failed

Diskette write, read, compare

test failed

Diskette random read test

failed

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.

1. Replace the diskette media

and retest.

2. Check and/or replace the

diskette power and signal
cables and retest.

3. Replace the diskette drive

and retest.

4. Replace the system board

and retest.

605-xx
606-xx

609-xx
610-xx

697-xx
698-xx

699-xx

1101-xx

Diskette ID media failed

Diskette speed test failed

Diskette reset controller test

failed

Diskette change line test failed

Diskette type error

Diskette drive speed not within

limits

Diskette drive/media ID error

Serial Test Error Codes

Serial port test failed

Hard Drive Test Error Codes

1. Replace media.

2. Run the Configuration and

Diagnostics Utilities.

1. Check port configuration

2. Replace the system board

and retest.

1701-xx
1702-xx

1703-xx

1704-xx
1705-xx

1706-xx
1707-xx

1708-xx

1709-xx
1710-xx
1715-xx

Hard drive format test failed

Hard drive read test failed

Hard drive write/read/compare

test failed

Hard drive random seek test

failed

Hard drive controller test failed

Hard drive ready test failed

Hard drive recalibration test

failed

Hard drive format bad track

test failed

Hard drive reset controller test

failed

Hard drive park head test failed

Hard drive head select test

failed

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.

1716-xx
1717-xx
1719-xx
1724-xx

1736-xx
* ECC = Error Correction Code

501-xx
502-xx
503-xx
504-xx

505-xx

506-xx

Hard drive conditional format

test failed

Hard drive ECC* test failed

Hard drive power mode test

failed

Network preparation test failed

Drive monitoring test failed

Video Test Error Codes

Video controller test failed The following apply to error codes

Video memory test failed

Video attribute test failed

Video character set test failed

Video 80 × 25 mode 9 × 14

character cell test failed

Video 80 × 25 mode 8 × 8

character cell test failed

501-xx through 516-xx:

1. Disconnect external monitor

and test with internal LCD
display.

2. Replace the display assembly

and retest.

3. Replace the system board

and retest.

507-xx
508-xx

509-xx

510-xx

511-xx
512-xx

514-xx
516-xx
2402-xx
2403-xx
2404-xx

2405-xx

2406-xx

2408-xx

Video 40 × 25 mode test failed

Video 320 × 200 mode color set

0 test failed

Video 320 × 200 mode color set

1 test failed

Video 640 × 200 mode test

failed

Video screen memory page test

failed

Video gray scale test failed

Video white screen test failed

Video noise pattern test failed

Video memory test failed The following steps apply to error

Video attribute test failed

Video character set test failed

Video 80 × 25 mode 9 × 14

character cell test failed

Video 80 × 25 mode 8 × 8

character cell test failed

Video 320 × 200 mode color set

0 test failed

codes 2402-xx through 2456-xx:

1. Run the Configuration and

Diagnostics Utilities.

2. Replace the display assembly

and retest.

3. Replace the system board

and retest.

2409-xx

2410-xx

2411-xx
2412-xx

2414-xx Video white screen test failed

2416-xx Video noise pattern test failed

2418-xx ECG/VGC memory test failed

2419-xx ECG/VGC ROM checksum test

2421-xx ECG/VGC 640 × 200 graphics

2422-xx ECG/VGC 640 × 350 16 color

2423-xx ECG/VGC 640 × 350 64 color

Video 320 × 200 mode color set

1 test failed

Video 640 × 200 mode test

failed

Video screen memory page test

failed

Video gray scale test failed

failed

mode test failed

set test failed

set test failed

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.

2424-xx ECG/VGC monochrome text

mode test failed
2425-xx ECG/VGC monochrome graphics

mode test failed
2431-xx 640 × 480 graphics test failure

2432-xx 320 × 200 graphics (256 color

mode) test failure
2448-xx Advanced VGA Controller test

failed
2451-xx 132-column Advanced VGA test

failed
2456-xx Advanced VGA 256 Color

test failed
2458-xx Advanced VGA BitBLT test The following step applies to error

codes 2458-xx through 2480-xx:

2468-xx Advanced VGA DAC test

Replace the system board and

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 Internal Error Replace the system board and

TouchPad/Pointing Device Interface Test Error Codes

8601-xx Mouse test failed

8602-xx Interface test failed

retest.

retest.

1. Replace the TouchPad and

retest.

2. Replace the system board

and retest.

CD Drive Test Error Codes

3301-xx CD drive read test failed

3305-xx CD drive seek test failed

6600-xx ID test failed

6605-xx Read test failed

6608-xx Controller test failed

6623-xx Random read test failed

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.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Preliminary
Steps

Clearing the
Power-On
Password

Power-On Test
(POST)

Compaq
Diagnostics

Diagnostic
Error Codes

Solving Minor
Problems

Contacting
Compaq
Support

Index

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
Power-On 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.

Computer is beeping and battery LED
icon is blinking.

Computer battery LED icon (front on the
unit) blinks to indicate low battery
condition, but computer does not beep.

Battery LED icon doesn't light and
battery pack won't fast charge.

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.

Volume is turned down too low. Adjust the volume.

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.

Battery has partially self-discharged. Recharge the battery. Discharge the

Power management is disabled. Set a power management level in

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 completely and then recharge it.

Computer Setup.

Battery pack is warm to the touch
after charging.

Battery pack operating time is far
less than the documented average
operating time.

An external device or PC Card is draining
the battery.

Normal warming has occurred due to
charging.

Power management is turned off or
disabled.

An external device or PC Card is draining
the battery.

Battery pack has partially self­discharged.

Turn off or disconnect external devices
when not using them.

No action is required.

Enable power management in Computer
Setup and in Windows Power Properties.

Turn off or disconnect external devices
when not using them.

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.

CD is CD Plus or Pregap/Track 0 type. Cannot read these type CDs in 24x.

Open the CD loading tray, lay the
compact disc in it (label side up), then
close the tray.

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.

Drive error has occurred. Run Computer Checkup from the

Compaq Diagnostics diskette.

Diskette is not formatted.

Format the diskette. At

Diskette drive cannot read a diskette.

Cannot boot from diskette.

the system prompt, enter

FORMAT A:

The wrong type of diskette is being
used.

Diskette has a bad sector. Copy files to hard drive or another

Drive error has occurred. Run Computer Checkup from the

Diskette is not
formatted.

Bootable diskette is not in drive A. Put the bootable diskette in drive A.
Diskette Boot has incorrect setting in

Computer Setup.

Use the type of diskette required by the
drive.

diskette. Reformat bad floppy.

Compaq Diagnostics diskette.

Format the diskette. At the
system prompt, enter FORMAT

A:

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.

Screen is blank.

Display is blank and the Suspend icon is
flashing.

Control for brightness or contrast (if
applicable) is not set properly.

Computer screen is in direct light. Tilt display or move computer.
Screen save was initiated by Power

Management due to lack of user
activity.

Display has overheated. If computer is in direct sunlight, move it

System is in Suspend mode. Press any key or touch the Touch Pad.

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 (- ).

Press any key or touch the Touch Pad.

and allow it to cool off.

Internal display is blank and the screen
on an external monitor displays
information.

Problem Probable Cause Solution(s)

Internal display flashes or has garbled
characters when computer is connected
to external monitor.

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.**

Display function was switched to the
external monitor.

Using 1024 x 768 or higher resolution
on external monitor and have toggled
back to internal display, which
supports up to
800 x 600.

Improper backlight or display cable
connections

Defective inverter board. Replace the display assembly.
Defective display cable. Replace the display assembly.

Use Fn + F2 to switch between LCD or

CRT.

Restart the computer.

Replace the display assembly.

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.**

Backlight (brightness) cannot be
adjusted with Fn + F7 (¯ ) or
Fn + F8 (- ).***

Contrast cannot be adjusted with
Fn + F5 (¯ ) or Fn + F6 (- ).

Defective display panel. Replace the display assembly.
Defective system board. Replace the system board.
Defective system board. Replace the system board.

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.
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.

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

Ghost bars extending from graphics on the
display.

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.

To perform a "self-test" on an external VGA color or monochrome monitor, complete the following steps: The

NOTE:

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.

Defective display cable. Replace the display assembly.
Defective inverter board. Replace the display assembly.

Defective system board. Replace the system board.
Common characteristic of STN

displays.

Defective display panel. Replace the display assembly.

1. Change the background colors.

2. Adjust the Contrast of the display

by using Fn + F5 (¯ ) or Fn + F6
(- ).

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)

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.

Hard drive does not work. Hard drive is not seated properly. Turn off and unplug the computer,

Run Computer Checkup.

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

Ensure that all cables are
properly and securely

power cables are unplugged.
Power switch of new external

device is not turned on.

connected.
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.

Embedded numeric keypad is disabled
and Num Lock function is on.

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.

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)

Memory count during Power-On Self-Test
(POST) is incorrect.

"Out of Memory" message is displayed
on the screen or insufficient memory
error occurs during operation.

Solving Minor Problems (continued)

Optional memory expansion card
is installed incorrectly, is incompatible
with the computer, or is defective.

System ran out of memory for the
application.

Too many TSR (terminate-and stay­resident) applications are running.

Ensure that the optional memory
expansion card is installed correctly.

Check the application documentation for
memory requirements.

Install additional memory.
Remove from memory any TSR

applications that you do not need.

Presario 1600 Series

AMD-K6 380-Mhz MMX

AMD-K6 380-Mhz MMX

14.1 inch TFT

K6II/380

4.8 GB (Not Available)

24x CD

32 MB

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Product Description

Models and
Features

Controls and
Lights

Front Bezel
Lights

Front Bezel
Buttons

Left Side
Components

Right Side
Components

Models and Features

Display
Processor

Hard Drive

Model 1683 Model 1685 & 1692

12. 1 inch TFT 12.1 inch TFT
AMD-K6 350-MHz MMX

3.2-GB 4.3-GB, 4.8-GB*, 6.4-GB

Index

[FrontPage Save
Results Component]

Underside of
Unit

Rear
Connectors

Power
Management
for Windows 98

DVD or CD
Drive

Modem

System
Memory

Display
Processor

Hard Drive

24x CD 24x CD, 4X DVD

56.0 Kbps Data/Fax with
PCI

32-MB 32 MB, 64-MB

Model 1687 & 1694 Model 1688

14.1 inch TFT 13.3 inch TFT
AMD-K6 380-MHz MMX

(model 1687)
AMD-K6 400-MHz MMX
(model 1694)
AMD-K6 433-MHz MMX
(model 1694)

4.8-GB*, 6.4-GB 4.8-GB*

56.0 Kbps Data/Fax with
PCI

[FrontPage Save
Results Component]

DVD or CD
Drive

Modem

System
Memory

Display
Processor
Hard Drive
CD Drive
Modem

4x DVD 24x CD

56.0 Kbps Data/Fax with
PCI

64-MB 64-MB

Model 1690 & 1693

14. 1 inch TFT
AMD-K6 400-MHz MMX

6.4-GB
24x CD, 4x DVD

56.0 Kbps Data/Fax with
PCI

56.0 Kbps Data/Fax with
PCI

CTO

56.0 Kbps Data/Fax with
PCI

System
Memory

64-MB

(*Hard Drive: 4.8 GB Not Available)

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Product Description

Models and
Features

Controls and
Lights

Front Bezel
Lights

Front Bezel
Buttons

Left Side
Components

Right Side
Components

Underside of Unit

Controls and Lights

Index

1. Display

2. Power (On/Off)

Button

3. Keyboard

4. Touch Pad

5. Touch Pad

Button (Left)

6. Headphone

Jack

Rear Connectors
Power

Management for
Windows 98

7. Microphone

Jack

8. Touch Pad

Button (Right)

9. Integrated

Speakers and
Ports

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Product Description

Models and
Features

Controls and
Lights

Front Bezel
Lights

Front Bezel
Buttons

Left Side
Components

Right Side
Components

Underside of Unit

Front Bezel Lights

Index

1.

2. Battery

3. Power Cord

4. Num Lock

Power
Light

Charge
Light

Light

Light

Rear Connectors
Power

Management for
Windows 98

5. Cap Lock

Light

6. Scroll Lock

Light

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Product Description

Models and
Features

Controls and
Lights

Front Bezel
Lights

Front Bezel
Buttons

Left Side
Components

Right Side
Components

Underside of
Unit

Rear Connectors

Front Bezel Buttons

Index

Instant

1.

Internet
Access Button

2. Instant Search

Button

3. Volume Down

Button

4. Scroll

Up/Down
Button

5. Volume Up

Button

Power
Management for
Windows 98

6. Secure E-

Commerce
Button (or
favorite Web
site)

7. Instant E-Mail

Button

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Product Description

Models and
Features

Controls and
Lights

Front Bezel
Lights

Front Bezel
Buttons

Left Side
Components

Right Side
Components

Underside of
Unit

Rear Connectors
Power

Management for
Windows 98

Left Side Components

Index

PC Card Eject

1.

Lever

2. PC Card Slot

3. Ethernet

Connector Plug*

4. Diskette Drive

Slot

5. Diskette Eject

Button

* The
Ethernet
Plug was
removed on
models
1692, 1693,
and 1694.
The Internal
Ethernet
Card or the
Ethernet
Plug are

Not
Availablefor

the 1600
Series.

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Product Description

Models and
Features

Controls and
Lights

Front Bezel
Lights

Front Bezel
Buttons

Left Side
Components

Right Side
Components

Underside of
Unit

Right Side Components

Index

Battery

1.

Compartment

2. DVD or CD Drive

Eject Button

3. DVD or CD Drive

Manual Eject Hole

Rear Connectors
Power

Management for
Windows 98

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Product Description

Models and
Features

Controls and
Lights

Front Bezel
Lights

Front Bezel
Buttons

Left Side
Components

Right Side
Components

Underside of Unit

Index

1. Memory

Compartment
Door

2. Stand Feet

Underside of
Unit

Rear Connectors
Power

Management for
Windows 98

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Product Description

Models and
Features

Controls and
Lights

Front Bezel
Lights

Front Bezel
Buttons

Left Side
Components

Right Side
Components

Rear Components

Index

1. AC Adapter

2. Universal Serial Bus

3. Security Slot

4. Serial Port

5. Port Replicator

6. External Monitor

Port

Underside of
Unit

Rear
Connectors

Power
Management
for Windows 98

7. Parallel Printer Port

8. Keyboard/Mouse

Port

9. Modem Jack

Presario 1600 Series

Models: 1683, 1685, 1687, 1688, 1690, 1692, 1693, and 1694

Before You Begin Specifications Parts Catalog

Removal Sequence Troubleshooting Battery Operations

Product Description Pin Assignments

Product Description

Models and
Features

Controls and
Lights

Front Bezel
Lights

Front Bezel
Buttons

Left Side
Components

Right Side
Components

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

● Servicing Your Computer - Full Off Mode

● Rebooting After a Lockup

● Battery Operating Time

Index

Underside of
Unit

Rear
Connectors

Power
Management
for Windows 98

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 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:

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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If you're on a network, it's recommended that you set System Standby to

Never.

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 3 hours Never

Power Management Properties

Tab: Alarms::

Low Battery Alarm: 10%
Critical Battery Alarm 0%
Alarm Actions: X Display Message Notification

Text Action No Action

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Power Management Properties

Tab: Power Meter:
Tab: Advanced

Default
Default

Display Properties

Tab: Monitor: Laptop Display (Maximum resolution according to unit display size)

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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.

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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 Press Power button

once

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

No Power LED,
blank screen

Off

Perform normal Windows shutdown via
the start button, or press and hold

Press Power button
once

No Power LED,
blank screen

down the power button for 4 seconds

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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 (see
battery section for instruction on removing battery).

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.

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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

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Battery Pack Operations.