Compaq Presario 1625, Presario 1636, Presario 1635, Presario 1624 User Manual

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Maintenance & Service Guide

Presario 1600 Series Portable Computers

Notice

Preface Product

Description Troubleshooting Illustrated

Parts Catalog Removal &

Repair Procedures

Specifications Connector Pin

Assignments Battery Pack

Welcome to the Presario 1600 Series Portable Computer Maintenance & Service Guide. This online guide is designed to serve the needs of those whose job it is to repair Compaq products. Many of the components of the hardcopy MSG are contained in this online guide. The

Notice, contains the copyright and trademark

information. The

Preface shows symbol conventions and

Technician Notes.

This MSG will be periodically maintained and updated online as needed.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Notice

The information in this guide is subject to change without notice.

COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL.

This guide contains information protected by copyright. No part of this guide may be photocopied or reproduced in any form without prior written consent from Compaq Computer Corporation.

Compaq, Presario Registered U. S. Patent and Trademark Office.

Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation. Windows 95 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 1600 Series Portable Computers

First Edition (October 1997) Spare Part Number 298499-001 Documentation Part Number 330976-001

Compaq Computer Corporation

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Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Preface

This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the Compaq Presario 1625/1635 Series Portable Computers.

Compaq Computer Corporation reserves the right to make changes to the Compaq Presario Series Portable Computers without notice.

Symbols

The following words and symbols mark special messages throughout this guide.

WARNING: Text set off in this manner indicates that failure to follow directions in the warning could result in bodily harm or loss of life.

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

Text set off in this manner presents clarifying information or

IMPORTANT:

specific instructions.

Text set off in this manner presents commentary, sidelights, or

NOTE:

interesting points of information.

Technician Notes

WARNING: Only authorized technicians trained by Compaq should repair this equipment. All troubleshooting and repair procedures are detailed to allow only subassembly/module level repair. Because of the complexity of the individual boards and subassemblies, the user should not attempt to make repairs at the component level or to make modifications to any printed circuit board. Improper repairs can create a safety hazard. Any indications of component replacement or printed circuit board modifications may void any warranty.

Serial Number

When requesting information or ordering spare parts, the computer serial number should be provided to Compaq. The serial number is located on the bottom of the computer.

Locating Additional Information

The following documentation is available to support this product:

● Compaq Presario 1624/1625/1635/1636 Series Portable Computer

documentation set

● Introducing Windows 95 Guide

● Service Training Guides

● Compaq Service Advisories and Bulletins

● Compaq QuickFind

● Compaq Service Quick Reference Guide

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Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Product Description

Models and Features

Rear Connectors

Port Replicator

Power Management

Compaq Presario 1600 Series Portable Computers are a new generation of multimedia portable computers with an innovative integrated design, outstanding audio and video, advanced core features, and attractive styling. This fullfunction, Pentium-based series of portable computers allows full desktop functionality.

Compaq Presario 1600 Series Portable Computers

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Troubleshooting

WARNING: To avoid a potential shock hazard during troubleshooting procedures,

disconnect all power sources before removing the keyboard cover or the display bezel.

This chapter covers troubleshooting information for the Compaq Presario Series Portable Computers. The basic steps in troubleshooting include:

1. Following the

Preliminary Steps.

2. Running the Power-On Self-Test (POST).

3. If you are unable to run POST you may Troubleshoot Without Diagnostics.

Search for Error Code by number.

Perform the recommended actions in the order listed. Rerun POST after each recommended action until the problem is solved and no error message occurs. Once the problem is solved, do not complete the remaining recommended actions.

NOTE:

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

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Illustrated Parts Catalog

System Unit Boards Display Mass Storage Devices Cables Miscellaneous Hardware and Screws

This chapter provides an illustrated parts breakdown and identifies the spare parts ordering number associated with each item(s) for Compaq Presario 1600 Series Portable Computers.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removal & Replacement Procedure

This chapter presents the removal and replacement procedures for the computer.

ESD

Service Considerations

Cable Positions

Preparing the Computer for Disassembly

Serial Number Location

Report the computer serial number to Compaq when requesting information or ordering spare parts. The serial number is displayed on the bottom of the computer.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Specifications

This section covers the following specifications of Compaq Presario 1600 Series Portable Computers:

● Physical and Environmental/Specifications

● System Interrupts

● System DMA

● System I/O Address

● System Memory Map

● Memory Expansion

● Diskette Drive

● Hard Drive

● CD Drive

● Battery Pack

● Dip Switch Settings

Physical and Environmental/Specifications

Dimensions

Height Depth Width

Weight

Model 1625 Model 1635 Model 1640

Stand-Alone (Battery Pack) Power Requirements

1.96 in

12.30 in

10.08 in

7.326Ib

NiMH

U.S. Metric

4.95 cm

31.00 cm

25.40 cm

3.33 kg

Li-ion

Nominal Operating Maximum Average Peak Operating

AC Power Requirements

Operating Voltage Operating Current Operating Frequency

Maximum Transient

Temperature

Operating 50° to 95 °F 10° to 35 °C Non-operating -4° to 140 °F -20° to 60 °C

Relative Humidity (noncondensing)

Operating 10 to 90% 35°C to 90% Non-operating (tw = 38.7°C

max)

W @ 9.6 V W @ 9.6 V W @ 9.6 V

100-240 V

0.8/0.4 A RMS 47-63 Hz Meets IEC 801-4 and IEC801-5 1kV for 50 ns

5 to 95% 60°C to 95%

W @ 14.4 V W @ 14.4 V W @ 14.4 V

Altitude

Operating 0 to 10,000 ft 0 to 3.15 km Non-operating 0 to 30,000 ft 0 to 9.14 km

Shock

Operating 10 G, 11 ms, half sine Non operating 240 G, 2 ms, half sine

Vibration

Operating 0.5 G Non-operating 1.5 G

NOTE:

Applicable product safety standards specify thermal limits for plastic surfaces. Compaq Presario 1600 Series Portable Computers operate well within this range of temperatures.

System Interrupts

Hardware IRQ System Function

IRQ0 Timer Interrupt IRQ1 Keyboard IRQ2 Interrupt Controller Cascade IRQ3 0X2F8 Default Resources for Modem IRQ4 Communications Port (COM 1) IRQ5 ES1869 Plug and Play AudioDrive IRQ6 Diskette Drive IRQ7 Parallel Port (LPT 1) (default)

IRQ8 System CMOS/Real-Time Clock IRQ10 IRQ Holder for PCI Steering IRQ10 PCI-1131 CardBus Controller IRQ11 IRQ Holder for PCI Steering IRQ11 MagicGraph128XD

DMA 0 ES1869 Plug and Play AudioDrive DMA 1 ES1869 Plug and Play AudioDrive DMA 2 Diskette Drive

IRQ11 PCI-1131 CardBus Controller IRQ12 PS/2 TouchPad IRQ13 Coprocessor IRQ14 Primary IDE Controller (dual FIFO) IRQ14 Opti Dual PCI IDE Controller IRQ15 Opti Dual PCI IDE Controller IRQ15 Secondary IDE Controller (dual FIFO)

System DMA

Hardware DMA System Function

DMA 4 Direct Memory Access Controller

System I/O Address

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

0000h-000Fh DMA Controller # 1 0020h-0021h Interrupt Controller # 1 0022h-0024h Motherboard resources 0040h-0043h System timer 0060h-0060h Keyboard Controller 0061h-0061h System speaker 0064h-0064h Standard 101/102-Key or Microsoft Natural

Keyboard 0070h-0071h System CMOS/real time clock 0080h-0080h Motherboard resources 0081h-008Fh DMA Controller 0092h-0092h Motherboard resources

00A0h-00A1h Programmable interrupt controller 00C0h-00DFh DMA Controller 00ECh-00EFh Motherboard resources

00F0h-00FFh Numeric data processor

0170h-0177h Secondary IDE controller (dual FIFO) 0170h-0177h Opti Dual PCI IDE Controller

01F0h-01F7h Opti Dual PCI IDE Controller 01F0h-01F7h Primary IDE controller (dual FIFO)

0201h-0201h Gameport Joystick

0220h-022Fh ES1869 Plug and Play AudioDrive

0330h-0331h ES1869 Plug and Play AudioDrive 0370h-0371h Motherboard resources 0376h-0376h Secondary IDE controller (dual FIFO) 0376h-0376h Opti Dual PCI IDE Controller

0378h-037Fh Printer Port (LPT1)

0388h-038Bh ES1869 Plug and Play AudioDrive 03B0h-03BBh MagicGraph128XD 03C0h-03DFh MagicGraph128XD

03F0h-03F5h Diskette Drive Controller 03F6h-03F6h Primary IDE controller (dual FIFO) 03F6h-03F6h Opti Dual PCI IDE Controller 03F7h-03F7h Diskette Drive Controller 03F8h-03FFh Communications Port (COM1)

040Bh-040Bh Motherboard resources

0480h-048Fh Motherboard resources

04D6h-04D6h Motherboard resources

0800h-0807h ES1869 Control Interface

00000000h-0009FFFFh System board extension for PnP BIOS 000A0000h-000AFFFFh MagicGraph128XD 000B0000h-000BFFFFh MagicGraph128XD 000C0000h-000CBFFFh MagicGraph128XD

0CF8h-0CFFh PCI bus 1000h-107Fh PCI-1131 CardBus Controller FCF0h-FCF7h Primary IDE controller (dual FIFO) FCF0h-FCF7h Opti Dual PCI IDE Controller FCF8h-FCFFh Secondary IDE controller (dual FIFO) FCF8h-FCFFh Opti Dual PCI IDE Controller

System Memory Map

Memory Address System Function

000CC000h-000CCFFFh PCI-1131 CardBus Controller 000CD000h-000CDFFFh PCI-1131 CardBus Controller 000E0000h-000FFFFFh System board extension for PnP BIOS 00100000h-017FFFFFh System board extension for PnP BIOS 05000000h-05040FFFh PCI-1131 CardBus Controller FD000000h-FDFFFFFFh MagicGraph128XD FEA00000h-FEBFFFFFh MagicGraph128XD FED00000h-FEDFFFFFh MagicGraph128XD FFFC0000h-FFFFFFFFh Motherboard resources

System Memory

Memory Expansion

Expansion Board

Memory

Total Memory

8-MB 16-MB 24-MB 8-MB 32-MB 40-MB

8-MB 64-MB 72-MB 16-MB 16-MB 32-MB 16-MB 32-MB 48-MB 16-MB 64-MB 80-MB 32-MB 16-MB 48-MB 32-MB 32-MB 64-MB 32-MB 64-MB 96-MB 64-MB 16-MB 80-MB 64-MB 32-MB 96-MB 64-MB 64-MB 128-MB*

*Run the PHDISK utility to increase the size of the hibernation file for the larger memory size.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Connector Pin Assignments

This section provides connector pin assignment tables for Compaq Presario 1600 Series Portable Computers and the Compaq Port Replicator for selected models. For more information on connectors, refer to Rear Connectors for

connectors located on the computer and on the port replicator.

The signals in all tables of this appendix are considered active high

NOTE:

unless otherwise indicated by an asterisk (*).

■ Parallel Connector

■ Serial Connector

■ Keyboard/Mouse

■ External VGA Monitor

■ Phone Line to Wall Jack

■ Port Replicator

Parallel Connector

Port Replicator for connectors located

Pin Signal Pin Signal

1 Strobe* 10 Acknowledge* 2 Data Bit 0 11 Busy 3 Data Bit 1 12 Paper Out 4 Data Bit 2 13 Select 5 Data Bit 3 14 Auto Linefeed* 6 Data Bit 4 15 Error* 7 Data Bit 5 16 Initialize Printer* 8 Data Bit 6 17 Select In* 9 Data Bit 7 18-25 Signal Ground

* = Active low

Serial Connector

Connector Pin Signal

Carrier Detect

Receive Data

Transmit Data

Data Terminal Ready

Signal Ground

Data Set Ready

Ready to Send

Clear to Send

Ring Indicator

Keyboard/Mouse

Connector Pin Signal

Data

Not defined

Ground

+5 VDC

Clock

Not defined

External VGA Monitor

Connector Pin Signal

Red Analog

Green Analog

Blue Analog

Not connected

Ground

Ground Analog

Phone Line to Wall Jack

Not connected

Ground

Monitor Detect

DDC2B Data

Horizontal Sync

Vertical Sync

DDC2B Clock

Connector Pin Signal

Port Replicator

Unused

Tip

Ring

Unused

Pin Signal Pin Signal Pin Signal Pin Signal

1 N.C. 21 Printer Data 0 41 N.C. 61 CTS 2 N.C. 22 Printer Data 1 42 N.C. 62 DCD 3 Kb Clk 1 23 Printer Data 2 43 Switch A 63 DSR 4 Joystick Data A 24 Printer Data 3 44 Switch B 64 TXD 5 Kb Data 1 25 Printer Data 4 45 Switch C 65 RTS 6 Joystick Data B 26 Printer Data 5 46 Switch D 66 N.C. 7 Kb Clk 2 27 Printer Data 6 47 N.C. 67 Detect 8 Joystick Data C 28 Printer Data 7 48 MIDI In 68 N.C. 9 Kb Data 2 29 Reserved 49 MIDI Out 69 V. Sync 10 Joystick Data D 30 Reserved 50 +5V 70 Ground 11 Lp Select In 31 Reserved 51 +5V 71 H. Sync 12 Lp Paper End 32 Reserved 52 N.C. 72 Ground 13 Lp Initialize 33 Adapter In 53 N.C. 73 Blue 14 Lp Busy 34 Adapter In 54 N.C. 74 Ground 15 Lp Error 35 Adapter In 55 N.C. 75 Green 16 Lp Ack 36 Adapter In 56 Dock ID - 76 Ground 17 Lp Auto Feed 37 Adapter In 57 RXD 77 Red 18 Lp Strobe 38 Adapter In 58 Lp Select 78 Ground 19 DDC2BC 39 N.C. 59 RI 79 N.C. 20 DDC2BD 40 N.C. 60 DTR 80 N.C.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Battery Pack

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

■ Increasing Battery Pack Operating Time

■ Minimizing the Energy Required

■ Maximizing the Energy Stored

■ Conditioning a Battery Pack

■ Battery Charge Time By Model

■ Disposal of a Used Battery Pack

Increasing Battery Pack Operating Time

Battery pack operating time differs depending on several variables. To avoid unnecessary replacement, consider the following variables when determining how long a charged battery pack should last:

■ Power management settings

■ Hardware configuration

■ Software applications

■ Installed options

■ Display brightness

■ Hard drive usage

■ Changes in operating temperature

■ Type and number of installed PC Cards

NOTE:

The power consumption requirements for PC Cards vary widely. Some cards drain the battery pack very rapidly.

Battery pack operating time can be increased by as much as 50 percent by controlling the energy required by the computer and the energy stored in the battery pack.

Minimizing the Energy Required

To minimize the energy required by the computer, follow these steps:

■ Set the power conservation levels in the Power Management utility to Maximum.

■ Customize the timeout value to work more efficiently with the applications. The amount of

battery life depends on the values selected.

Maximizing the Energy Stored

To maximize the energy stored in the battery pack, follow these guidelines:

■ Condition the battery pack at least every 30 days to improve overall battery performance.

■ Keep a battery pack in the computer when using it with AC power to supply the battery

pack with a constant trickle charge.

■ Store the battery pack in a cool, dry place when not in use.

Conditioning a Battery Pack

CAUTION: To avoid a loss of data, ensure that all data is saved before discharging a battery pack.

To condition a battery pack, complete the following steps:

1. Plug in the AC adapter and allow the battery to charge until the fast charge arrow on the display disappears. Your battery gauge may read 100 percent for a period of time before the arrow disappears. Do not unplug the AC adapter until the arrow disappears.

Select Disabled in the Power menu of the BIOS Setup. The system will hibernate after one hour of being in suspend. By selecting Disabled, the system will not timeout and enter suspend.

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.

This table shows battery pack charge times by model.

Battery Charge Time By Model

Computer On Line Off Line

Model 1/NiMH Battery Pack 4.0 hours premature

termination

2:00 hr

Model 2/Li ion Battery Pack 4.5 hours premature

termination

2:50 hr

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. Handle battery packs 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 exposes potentially harmful battery components.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Models & Features

Models and Features

Front Of Unit

Left Side Components

Right Side Components

Bottom Of Unit

Models

This table lists the relevant features of Compaq Presario Series Portable Computers.

Display

Processor

AMD K6

Hard Drives

Speaker

Assembly

Modem

Model 1625 Model 1635 Model 1640

12.1"HPA 12.1" TFT 12.1" TFT

266 MMX 233 MMX 266 MMX

3.2 GB 3.2 GB 4 GB

JBL Pro

K-56K D/F M++ 56K D/F K-56 K D/F

JBL Pro JBL Pro

Features

All models of the computer have the following features:

● 1.44-MB, 3.5-inch diskette drive

● Built-in 24× CD drive

● Ported stereo speakers

● TouchPad

● Easy Access CD Control Buttons

● 91-key (Three Windows 95 keys, 12 function keys) keyboard

● External AC adapter

● PC Card slots capable of handling one of the following card

combinations: Two Type I or Type II PC cards One Type III PC card

● Battery power management features include the following:

- Advanced Power Management (APM)

- Suspend mode

- Screen save

- Hibernation

● Password security

● Preinstalled software: Windows 95 OSR 2.5 or Windows 98

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Front of Unit

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Models and Features

Front Of Unit

Left Side Components

Right Side Components

Bottom Of Unit

Front of Unit

1. Display 9. CD Previous Track

2. Power

(On/Off) Button

DisqPlay Switch

4. Volume

Control Down Button

5. Volume

Control Up Button

6. Status

Panel

10. CD Next Track

11. Keyboard

12. Touch Pad

13. Left Touch Pad Button

14. Right Touch Pad Button

Front of Unit

7. CD

Play/Pause

8. CD

Stop

15. Integrated Speakers

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Left Side Components

Models and Features

Front Of Unit

Left Side Components

Right Side Components

Bottom Of Unit

Left Side Components

1. Modem/Phone Jack

2. Diskette Drive Slot

3. Diskette Eject Button

4. Battery Compartment

5. Left Speaker Port

Left Side Components

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Right Side Components

Models and Features

Front Of Unit

Left Side Components

Right Side Components

Bottom Of Unit

Right Side Components

Right Side

Components

Headphone/ Line-Out Jack

2. Line-in

Jack

3. External

Microphone Jack

4. CD Drive 9. PC

5. CD Drive

Light

6. CD Drive Eject Button

7. PC Card Top Slot

8. PC Card Bottom Slot

Card Eject Levers

10. Right Speaker Port

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Bottom Of Unit

Models and Features

Front Of Unit

Left Side Components

Right Side Components

Bottom Of Unit

Bottom of

Unit

1.Memory

Compartment

2. Feet

Bottom of Unit

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Diagnostic

Preliminary Steps

Before running POST, complete the following preliminary steps:

1. If a power-on password has been established, type the password and press the Enter key. If the password is not known,

2. Run Computer Setup.

3. Adjust the brightness and contrast.

4. Turn off the computer and its external devices.

Disconnect any external devices that you do not want to test. Do not disconnect the printer if you want to test it or use it to log error messages.

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

NOTE:

6. Install loopback plugs in the serial and parallel connectors if you would like

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

clear the password.

to test these ports.

7. Ensure the hard drive is installed in the computer.

8. Ensure that the battery pack is inserted in the computer and the computer is connected to an external AC power source.

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

POST.

Clearing the Power-On Password

Clearing the power-on password requires removing all Setup attributes that are programmed in the CMOS. If the password is not known, clear it by performing the following steps:

1. Turn off the computer.

2. Disconnect the power cord.

Remove the battery pack.

4. Remove the keyboard.

5. Remove the RTC battery (1) for 30 seconds as shown below. The password, together with other Setup attributes, will be cleared.

Clearing the Power-On Password

6. Turn the computer on to verify the power-on password has been cleared. If it has not been cleared, repeat these steps.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Power On Self Test (POST)

Running POST

To run POST, complete the following steps:

Turn off the computer. Let stand for a 10 count, then turn the computer back on.

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" for a list of POST

codes and their relevant descriptions.

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

NOTE:

functioning well enough to show POST error messages, refer to the Troubleshooting tables.

Power-On Self-Test Messages

102 162 301 304 601 605 1780 1782

Probable Cause Recommended Action

102-System Board Failure

DMA, timers, etc. Replace the system board.

162-System Options Not Set

Configuration incorrect Run Computer Setup. CMOS reflects that an invalid

configuration has been set. RAM failure

Memory test data error XX000YZZ RAM failure Replace the system board.

301-Keyboard Error

Keyboard failure

Run Computer Setup.

1. Replace the memory modules.

2. Replace the system board.

1. Replace the memory modules.

2. Replace the system board.

1. Ensure the keys are not depressed during POST.

2. Reconnect the keyboard with the computer off.

3. Replace the keyboard.

304-Keyboard or System Unit Error

1. Replace the keyboard.

Keyboard or system board error

601-Diskette Controller Error

Mismatch in drive type or failure in the diskette controller

605-Diskette Drive Error

Mismatch in drive type Run Computer Setup.

1780-Primary Hard Drive 0 Failure

Disk 0 failed to respond

Hard drive format error

1782-Hard Drive Controller

2. Replace the TouchPad or mouse.

3. Replace the system board.

1. Run Computer Checkup (TEST).

2. Check and/or replace cables.

3. Replace the system board.

1. Run Computer Checkup (TEST).

2. Replace the hard drive.

1. Run Computer Checkup (TEST).

2. Replace the hard drive.

Hard drive controller failure

1. Run Computer Setup.

2. Replace the hard drive.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Troubleshooting Without Diagnostics

This section provides information about how to identify and correct some common hardware, memory, and software problems. It also explains several types of common messages that may be displayed on the screen. The following pages contain troubleshooting information on:

Audio Memory Battery/Battery gauge PC Card CD drive Power Diskette/Diskette drive Printer Display Touch Pad Hard drive Keyboard/Numeric keypad Hardware Installation

Since symptoms can appear to be similar, carefully match the symptoms of the computer malfunction against the problem description in the Troubleshooting tables to avoid a misdiagnosis.

WARNING: To avoid a potential shock hazard during troubleshooting procedures, disconnect all power sources before removing the keyboard cover or the display bezel.

Before Replacing Parts

When troubleshooting a problem, check the following list for possible solutions before replacing parts:

● Verify that cables are connected properly to the suspected defective parts.

● Run Computer Setup after connecting external devices.

● Verify that all required device drivers are installed.

● Verify that all required changes have been made to the CONFIG.SYS file.

● Verify that all required changes have been made to the AUTOEXEC.BAT file.

● Verify that all printer drivers have been installed for each application.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Keyboard Solutions

Solving Minor Problems

Some minor problems and possible solutions are outlined here. If the problem appears related to a software application, check the documentation provided with the software.

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.

External numeric keypad is connected to the computer.

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.

Disconnect the external numeric keypad from the computer.

Back to Troubleshooting Without Diagnostics

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Hard Drive Solutions

Solving Minor Problems

Some minor problems and possible solutions are outlined here. If the problem appears related to a software application, check the documentation provided with the software.

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.

Back to Troubleshooting Without Diagnostics

Run Computer Checkup.

Turn off and unplug the computer, remove the battery pack, and remove and then reinstall the hard drive.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Diskette Solutions

Solving Minor Problems

Some minor problems and possible solutions are outlined here. If the problem appears related to a software application, check the documentation provided with the software.

Some common causes and solutions for diskette and diskette drive problems are listed below.

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 writeprotected.

Computer is writing to the wrong drive.

Not enough space is left on the diskette.

Drive error has occurred. Run Computer Checkup from

Diskette is not formatted. Format the diskette. At

Check the drive letter in the path statement.

Use another diskette.

the Compaq Diagnostics diskette.

the system prompt, enter FORMAT A:

Diskette drive cannot read a diskette.

Cannot boot from diskette. Bootable diskette is not in

The wrong type of diskette is being used.

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

Drive error has occurred. Run Computer Checkup from

Diskette is not formatted. Format the diskette. At the

The floppy controller is disabled in F10 Setup

drive A. Diskette Boot has incorrect

setting in Computer Setup.

Use the type of diskette required by the drive.

another diskette. Reformat bad floppy.

the Compaq Diagnostics diskette.

system prompt, enter FORMAT A:

Re-enable the floppy controller in F10 Setup

Put the bootable diskette in drive A.

Run Computer Setup and set diskette as first to boot.

Back to Troubleshooting Without Diagnostics

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Solving Audio Problems

Solving Minor Problems

Some minor problems and possible solutions are outlined here. If the problem appears related to a software application, check the documentation provided with the software.

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.

Back to Troubleshooting Without Diagnostics

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Battery Pack

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 Battery Pack and Battery Gauge Problems

Some common causes and solutions for battery pack problems are listed below. The Solving Power Problems section in this chapter may also be

useful.

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 icon on the LCD status display is blinking.

Computer battery icon on the LCD status display blinks to indicate low battery condition, but computer does not beep.

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

Battery charge is low. Immediately save any open

file(s). Then do 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.

Battery pack is already charged

Adjust the volume.

No action is necessary

You have to set the date and time every time you turn on the computer.

Battery charge does not last as long as expected.

Battery pack was exposed to temperature extremes.

Battery pack is at end of its life.

RTC battery is dead. Replace the RTC battery.

Battery is being exposed to high temperatures or extremely cold temperatures.

Battery has partially selfdischarged.

Power management is disabled.

Allow time for the battery pack to return to room temperature.

Replace battery pack.

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.

Recharge the battery. Discharge the battery completely and then recharge it.

Set a power management level in 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.

Battery pack is being exposed to high temperatures or extremely cold temperatures.

Back to Troubleshooting Without Diagnostics

If the computer is disconnected from external power for more than two weeks, remove battery packs from the computer to reduce the discharge rate.

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.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Power Solutions

Solving Minor Problems

Some minor problems and possible solutions are outlined here. If the problem appears related to a software application, check the documentation provided with the software.

Solving Power Problems

Also see Solving Battery and Battery Gauge Problems.

Solving Power Problems

Problem Probable Cause Solution(s)

Computer won't turn on and battery pack is not inserted*.

The computer doesn't timeout while on AC power

Computer is not connected to a power source.

Power cords to the external power source are unplugged.

Power adapter is defective. Replace AC Adapter and

The system is designed not to timeout while on AC power.

Insert battery or connect an external power source.

Ensure that power cords connecting the computer and the external power source are plugged in properly.

restart. Windows will spin down the

hard drive. Windows can be configured to power off the monitor using the display properties control panel applet. Alternatively, the user can change "BIOS-PM on AC" in the BIOS setup.

Computer turned off while it was left unattended and the power icon is off.

System board is defective. Replace the system board. System initiated Hibernation

due to a critical low-battery condition.

System initiated Hibernation after a preset timeout.

Replace the battery pack with a fully charged battery pack or connect the computer to an external power source. Then turn on the computer.

Turn on the computer.

* In rare cases, it may be necessary to remove the power cord and the battery, wait 30 seconds, and reinsert the power cord to power on the unit. The above steps reset the keyboard controller which is usually always powered, even when the computer appears to be off.

Back to Troubleshooting Without Diagnostics

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

CD Drive Solutions

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 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.

No CDs work at all. The Performance tab in

Compact disc is upside down or is improperly inserted in the CD drive.

CD is CD Plus or Pregap/Track 0 type.

System properties shows that one or more of the hard disks in your computer is using MSDOS Compatibility mode.

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

Cannot read these type CDs in 24× CD drive. Remove the CD.

If the driver name listed as causing MS-DOS Compatibility mode is MBRINT13.SYS, your computer may be infected with a boot-sector virus. Please purchase a virus scanning software package (consult your local software retailer for recommendations) to check your system. If the application you purchase successfully eliminates the virus, scan (check) all of your diskettes before re-installing to prevent further contamination.

Back to Troubleshooting Without Diagnostics

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Hardware Installation Solutions

Solving Minor Problems

Some minor problems and possible solutions are outlined here. If the problem appears related to a software application, check the documentation provided with the software.

Solving Hardware Installation Problems

Some common causes and solutions for hardware installation problems are listed here.

Solving Hardware Installation Problems

Problem Probable Cause Solutions(s)

A new device is not recognized as part of the computer system.

Cable(s) of new external device are loose or power cables are unplugged.

Power switch of new external device is not turned on.

Device is not seated properly. Turn off the computer and

Ensure that all cables are properly and securely connected.

Turn off the computer, turn on the external device, then turn on the computer to integrate the device with the computer system.

reinsert the device.

Back to Troubleshooting Without Diagnostics

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Memory Solutions

Solving Minor Problems

Some minor problems and possible solutions are outlined here. If the problem appears related to a software application, check the documentation provided with the software.

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 PowerOn Self-Test (POST) is incorrect.

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

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 stay-resident) 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.

Back to Troubleshooting Without Diagnostics

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

PC Card Solutions

Solving Minor Problems

Some minor problems and possible solutions are outlined here. If the problem appears related to a software application, check the documentation provided with the software.

Solving PC Card Problems

Some common causes and solutions for PC Card problems are listed in the following table.

Solving PC Card Problems

Problem Probable Cause Solution(s)

When turned on, the computer does not beep when a PC Card is inserted *.

Card is not inserted properly. Ensure the card is inserted in

the correct orientation.

PC Card beeps are disabled. Double-click the PC Card icon in

the Control Panel, click the Global Settings tab, the enable PC Card sound effects.

Speaker is turned off or volume is turned down.

PC Card drivers are not installed. Double click the Add New

Press volume buttons to turn the speaker on, then increase the volume.

Hardware icon in the Control Panel for installation instructions.

PC Card modem, fax, or network card does not work.

PC Card modem or fax card does not work.

If PC Card or drivers are not compatible with Windows, install drivers and use the PC Card in MS-DOS mode.

Card or card driver is not supported. Contact your Compaq

authorized service provider for a list of PC Cards tested successfully in Compaq PC Card platforms.

Card is not fully inserted into the slot or is not inserted properly.

Telephone cord is not plugged in all the way.

Necessary drivers are not installed (turned on).

You are trying to access the card using the wrong COM port.

The card conflicts with a serial device.

Ensure the card is inserted in the correct orientation.

Check and secure telephone connection.

Install drivers.

See Chapter 6 to verify COM port.

See Chapter 6 to verify address.

Modem network PC Card does not work.

Memory or storage card does not work.

The card is not supported. Use supported cards only. Network driver is not installed or is

not set up properly. Telephone cord is not properly

connected. SRAM and flash memory cards

require the memory card driver to be loaded (turned on).

Flash memory cards require the Microsoft FlashFile System to be loaded.

Hard drives on flash mass storage cards require the PC Card ATA driver to be loaded.

You are trying to access the hard drive card using the wrong drive letter.

Install driver.

Verify telephone connection

Install driver.

Double-click My Computer to verify the drive letter assigned to the card.

The card is not supported. Contact your Compaq

authorized service provider for a list of PC Cards tested successfully in Compaq PC Card platforms.

* To use two 16-bit PC Cards, an IRQ must be freed by disabling a device such as the parallel port, serial port, or audio controller. By default, only one free IRQ is available. Most 16-bit PC Cards require one free ISA interrupt.

Back to Troubleshooting Without Diagnostics

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Printer Solutions

Solving Minor Problems

Some minor problems and possible solutions are outlined here. If the problem appears related to a software application, check the documentation provided with the software.

Solving Printer Problems

If you experience problems printing, run a printer self-test. Refer to the documentation provided with your printer for instructions. If the self-test fails, it is a printer-specific problem. Also refer to the printing section of your application documentation.

Solving Printer Problems

Problem Probable Cause Solution(s)

Printer will not turn on. The signal cable may not be

connected properly, or the printer is unplugged.

Printer will not print. Printer is not turned on or is

off line. The device drivers for your

application are not installed.

Ensure that the signal cable is properly connected and that the power cord is connected to the electrical outlet.

Turn the printer on and set it to on line.

Refer to the printer documentation to install the correct printer driver.

Printer that is set up for a network is not connected to the network.

Printer cable is too long, unshielded, or defective.

Paper tray is empty. Fill the paper tray with

Printer prints garbled information. Correct printer drivers are not

installed.

Cable is not connected properly.

Cable is defective. Replace the printer cable

Connect the printer to the network.

Replace the cable.

paper and set the printer to online.

Refer to the printer documentation to install the correct printer driver.

Ensure that the printer signal cable is properly connected to the computer.

and retest.

Back to Troubleshooting Without Diagnostics

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Touch Pad Solutions

Solving Minor Problems

Some minor problems and possible solutions are outlined here. If the problem appears related to a software application, check the documentation provided with the software.

Solving Touch Pad/Pointing Device Problems

Some common causes and solutions for Touch Pad/pointing device problems are listed in the following table.

Solving Touch Pad/Pointing Device Problems

Problem Cause Solution(s)

Touch Pad or mouse does not work. Incorrect or no device driver

is installed.

The device driver is not installed in Windows.

External mouse does not work. Mouse is not securely

connected or is connected to an incorrect external connector.

Install the device driver and add to the AUTOEXEC.BAT file or CONFIG.SYS file.

Install the Touch Pad/mouse driver in Windows.

Ensure that the mouse is securely connected to the appropriate external connector.

Touch Pad or mouse does not work even though the device is enabled in Windows.

Cursor skips or moves abnormally when using the Touch Pad.

Mouse is not enabled. Enter SYNTOUCH.COM at

the system prompt to activate the mouse device driver.(C:\WINDOWS\ DOSSTART.BAT)

Add a line in the AUTOEXEC.BAT file to automatically activate the mouse device driver each time computer is turned on or restarted.

Cable not properly seated in Touch Pad board.

Defective Touch Pad board. Replace Touch Pad board. Defective system board. Replace system board. Device driver is not correctly

installed in Windows. The Touch Pad needs to be

cleaned.

Reseat cable.

Install the appropriate device driver in Windows.

Clean the Touch Pad with a cloth dampened with alcohol or an ammoniabased glass cleaner. Wipe up liquid with a dry cloth.

Back to Troubleshooting Without Diagnostics

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Error Codes

Diagnostic error codes occur if the system recognizes a problem while running the Compaq Diagnostic program. These error codes help identify possibly

defective subassemblies.

The following tables list error codes, a description of the error condition, and the action required to resolve the error condition.

IMPORTANT:

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

For assistance in For the removal and replacement of a particular subassembly, see Removal and Replacement Procedures.

Select error codes by number or type:

101 through 114 Processor Test 200 through 215 Memory Test 300 through 304 Keyboard Test 401 through 403 Parallel Printer Test 600 through 699 Diskette Drive Test 1101 Serial Test 1701 through 1736 Hard Drive Test 501 through 516 Video Test 2402 through 2456 2458 through 2480 3206 Audio Test 8601 through 8602 Touch Pad Pointing Device Test 3301 through 6623 CD Test

Processor Test Error Codes

Error Code

101-xx CPU test failed Replace the processor and retest. 102-xx Coprocessor or Weitek Error 1. Run the Configuration and

103-xx DMA page registers test failed Replace the system board and 104-xx Interrupt controller master test

failed

Description Recommended Action

Diagnostics Utilities.

2. Replace the processor board and retest.

retest.

105-xx Port 61 error 106-xx Keyboard controller self-test

failed 107-xx CMOS RAM test failed 108-xx CMOS interrupt test failed 109-xx CMOS clock test failed 110-xx Programmable timer load data

test failed 113-xx Protected mode test failed 114-01 Speaker test failed 1. Check system configuration.

2. Verify cable connections to speaker.

3. Replace the system board and retest.

Memory Test Error Codes

200-xx Memory machine ID test failed 1. Flash the system ROM and retest. 202-xx Memory system ROM checksum

failed

2. Replace the system board and retest.

203-xx Write/Read test failed 1. Remove the memory module and 204-xx Address test failed 211-xx Random pattern test failed 214-xx Noise test failed 215-xx Random address test failed

Keyboard Test Error Codes

300-xx Failed ID Test 1. Check the keyboard connection.

301-xx Failed Selftest/Interface Test

302-xx Failed Individual Key Test

304-xx Failed Keyboard Repeat Test

Parallel Printer Test Error Codes

401-xx Printer failed or not connected 1. Connect the printer.

402-xx Failed Port Test

403-xx Printer pattern test failed

retest.

2. Install a new memory module and retest.

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

2. Replace the keyboard and retest.

3. Replace the system board and retest.

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.

Diskette Drive Test

600-xx 601-xx Diskette format failed

602-xx Diskette read test failed 603-xx

604-xx 605-xx Diskette ID media failed

606-xx Diskette speed test failed 609-xx 610-xx Diskette change line test failed

697-xx Diskette type error 698-xx

Diskette ID drive types test

failed

Diskette write, read, compare

test failed

Diskette random read test

failed

Diskette reset controller test

failed

Diskette drive speed not within

limits

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.

Diskette drive/media ID error 1. Replace media. 699-xx

Serial Test Error Codes

Serial port test failed 1. Check port configuration 1101-xx

Hard Drive Test Error Codes

1701-xx Hard drive format test failed 1. Run the Configuration and 1702-xx Hard drive read test failed

1703-xx

1704-xx 1705-xx Hard drive controller test failed

1706-xx Hard drive ready test failed

Hard drive write/read/compare

test failed

Hard drive random seek test

failed

2. Run the Configuration and Diagnostics Utilities.

2. Replace the system board and retest.

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.

1707-xx

1708-xx

1709-xx 1710-xx Hard drive park head test failed 1715-xx

1716-xx 1717-xx Hard drive ECC* test failed 1719-xx 1724-xx Network preparation test failed

1736-xx Drive monitoring test failed

Hard drive recalibration test

failed

Hard drive format bad track

test failed

Hard drive reset controller test

failed

Hard drive head select test

failed

Hard drive conditional format

test failed

Hard drive power mode test

failed

* ECC = Error Correction Code

Video Test Error Codes

501-xx Video controller test failed The following apply to error codes 502-xx Video memory test failed 503-xx Video attribute test failed 504-xx Video character set test failed

505-xx

506-xx 507-xx Video 40 × 25 mode test failed 508-xx

509-xx

510-xx

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

Video 320 × 200 mode color set

1 test failed

Video 640 × 200 mode 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.

511-xx 512-xx Video gray scale test failed

514-xx Video white screen test failed 516-xx Video noise pattern test failed 2402-xx Video memory test failed The following steps apply to error 2403-xx Video attribute test failed 2404-xx Video character set test failed

2405-xx

2406-xx

2408-xx

2409-xx

Video screen memory page 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

Video 320 × 200 mode color set

1 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.

2410-xx

2411-xx 2412-xx Video gray scale test failed

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 640 × 200 mode test

failed

Video screen memory page test

failed

mode 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

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 1. Replace the TouchPad and retest.

8602-xx Interface test failed

Replace the system board and retest.

retest.

2. Replace the system board and retest.

3301-xx CD drive read test failed 1. Replace the CD and retest.

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

CD Drive Test Error Codes

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.

Netherlands 330981-331

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

System Unit

Maintenance & Service Guide

Presario 1600 Series Portable Computers

System Unit Boards Display Mass Storage

Devices Cables Miscellaneous

Hardware and Screws

Description Spare Part

Number

1. Status Panel w/Cable

2. Keyboards,

3. Palmrest Cover w/Board and Cable

4. Upper CPU Cover Assembly w/Cable and Power Switch (Top Plastics)

5. Speaker Assembly, Premium

293737-001

332226-001

293739-001

330979-001

6. Battery Pack, E.S. NiMH

6. Battery Pack, Li ion

7. CPU Base Assembly (Bottom Plastics), Enclosure

293861-001

292560-001

332230-001

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Boards

System Unit Boards Display Mass Storage

Devices Cables Miscellaneous

Hardware and Screws

Description Spare

Part Number

1.Heatspreader 298607001

2.Audio Board

w/Jacks

3.LCD

Interface Board w/Header

4.Modem, M+

K-56 K Data/Fax

293882-

001

293746-

001

298974-

002

K-56K Data/Fax

5.Fan 332228-

6.Voltage

Converter

7.System

Board, w/o Processor

8.System

Memory, (SODIMM) 64-MB 32-MB 16-MB

138657-

001

293748-

001

330982-

001

332208-

001

293727-

001

293726-

001

LCD Interface (TFT) Connector*

LCD Interface (DSTN) Connector*

Processor, K/233 MHz MMX*

*Not Shown Back to

293156-

001

332232-

001

330980-

001

top

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Display

Maintenance & Service Guide

Presario 1600 Series Portable Computers

System Unit Boards Display Mass Storage

Devices Cables Miscellaneous

Hardware and Screws

Description Spare

Part

Number

Display Assembly Model 1625

12.1 inch HPA

Display Assembly w/o microphone, Model

12.1 inch TFT

298495-

001

332224-

001

Display Assembly

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Mass Storage Devices

System Unit Boards Display Mass Storage

Devices Cables Miscellaneous

Hardware and Screws

Description

1. Diskette Drive, 1.44 MB,

3.5"

2. Hard Drive

3.2-GB Model Hard Drive 4.0GB Model

3. 24× CD Drive 330967-001

Spare Part

Number

330971-001

330968-001

330988-001

Cables

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

System Unit Boards Display Mass Storage

Devices Cables

■ Miscellaneous

Cables Kit

■ Modem Cables

■ AC Power

Cords

Miscellaneous Hardware and Screws

Miscellaneous Cables

Kit

Spare Part Number:

332234-001

Description Quantity

1a. Cable, CD Drive

1b. Cable, Hard Drive

1c. Cable, Diskette Drive

1d. Cable, TouchPad SW Board

1e. Cable, Fax/Modem

CD Play Board*

*Not Shown

Modem Cables

Description Spare

Belgium 304398-

Canada 137256-

Part

Number

181

001

Japan 137256-

001

Latin America

United States

United Kingdom w/adapter

France w/adapter

Netherlands w/adapter

137256-

001

137256-

001

304398-

031

304398-

051

304398-

331

AC Power Cords (Not

Shown)

Description Spare

Part

Number

US/Canada 293831-

001

United Kingdom

Japan 293831-

International 293831-

293831-

031

291

002

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Miscellaneous Hardware and Screws

System Unit Boards

Miscellaneous Parts

Display Mass Storage

Devices Cables Miscellaneous

Hardware and Screws

■ Miscellaneous

Parts

■ Miscellaneous

Hardware Kit

■ Return Kits

Description Spare

Part

Number

1. AC Adapter

2. Port Replicator

Clock Battery (Not Shown)

Miscellaneous Screw Kit (Not Shown)

Logo Kit (Not Shown)

298239-

001

293857-

001

117099-

001

293760-

001

203727-

001

Miscellaneous Hardware Kit

Spare Part Number: 293761-001

Description Quantity

1. Cover, Battery Pack 1 ea.

2. Cover, Memory Module 1 ea.

3. Door, PCMCIA 2 ea.

4. Hinge (Clutch) Cover, Left 1 ea.

5. Hinge (Clutch) Cover, Right 1 ea.

6. Rubber Foot 10 ea.

7. Stand Foot (plastic) 10 ea.

8. 3.2-GB/4.0-GB Hard Drive Brackets (Left/Right)

9. Stiffener Reinforce Frame 1 ea.

10. Stiffener Reinforce Bracket 1 ea. Spring Torsion (Not Shown) 10 ea. Display Assembly Screw Covers

(Not Shown) LCD Guide (Not Shown) 1 ea. Stand Bracket (Not Shown) 1 ea.

1 ea.

10 ea.

Return Kits

Description Quantity

Return Kit 293799-001

Carton and Buns - International 293799-002

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Electrostatic Discharge

This chapter provides general service information for the Compaq Presario Series of portable computers. Adherence to the procedures and precautions described in this chapter is essential for proper service. The topics covered include Electrostatic Discharge and its effects, a table of activities that

Generate Static and the potential voltages, ways of Preventing Electrostatic Damage to Equipment, and Preventing Damage to the Drive, Grounding Methods, Grounding Work Areas, and Recommended Materials and Equipment

to use in the service area. Return to

Removal & Replacement Procedures.

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

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

Generating Static

The table below 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 Motions of bench worker 6,000 V 800 V 400 V Removing DIPS from plastic tubes 2,000 V 700 V 400 V Removing DIPS from vinyl trays 11,500 V 4,000 V 2,000 V Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V

Relative Humidity

Removing bubble pack from PCBs 26,000 V 20,000 V 7,000 V Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V NOTE: 700 volts can degrade a

product.

Preventing Electrostatic Damage to Equipment

Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of sensitivity. The following proper packaging and grounding precautions are necessary to prevent damage:

■ To avoid hand contact, transport products in the static-safe containers such as tubes,

bags, or boxes.

■ Protect all electrostatic parts and assemblies with conductive or approved containers or

packaging.

■ Keep electrostatic sensitive parts in their containers until they arrive at static-free stations.

■ Place items on a grounded surface before removing them from their container.

■ Always be properly grounded when touching a sensitive component or assembly.

■ Place reusable electronic-sensitive parts from assemblies in protective packaging or

conductive foam.

■ Use transporters and conveyors made of anti-static belts and metal roller bushings.

Mechanized equipment used for moving materials must be wired to ground and proper materials selected to avoid static charging. When grounding is not possible, use an ionizer to dissipate electric charges.

Preventing Damage to Drive

To prevent static damage to hard drive and diskette drive, use the following precautions:

■ Handle drive gently, using static-guarding techniques.

■ Store drive in the original shipping containers.

■ Avoid dropping drive from any height onto any surface.

■ Handle drive on surfaces that have at least one inch of shock-proof foam.

■ Always place drive PCB assembly side down on the foam.

Grounding Methods

The method for grounding must include a wrist strap or a foot step at a grounded work area. When seated, wear a wrist-strap connected to a grounded system. When standing, use footstraps and a grounded floor mat.

Static-Shielding Protection Levels

Method Voltages

Anti-static Plastic 1,500

Carbon-Loaded Plastic 7,500

Metallized Laminate 15,000

Grounding Work Areas

To prevent static damage at the work area, use the following precautions:

■ Cover the work area with approved static-dissipative material. Provide a wrist strap

connected to the work surface and properly grounded tools and equipment.

■ Use static-dissipative mats, Heel straps, or air ionizers to give added protection.

■ Handle electrostatic sensitive components, parts, and assemblies by the case or PCB

laminate. Handle them only at static-free work areas.

■ Avoid contact with pins, leads, or circuitry.

■ Turn off power and input signals before inserting and removing connectors or test

equipment.

■ Use fixtures made of static-safe materials when fixtures must directly contact dissipative

surfaces.

■ Keep work area free of nonconductive materials such as ordinary plastic assembly aids and

Styrofoam.

Use field service tools, such as cutters, screwdrivers, vacuums, that are conductive.

Use a portable field service kit with a static dissipative vinyl pouch that folds out of a work mat. Also use a wrist strap and a ground cord for the work surface. Ground the cord to the chassis of the equipment undergoing test or repair.

Grounding Equipment

Use the following equipment to prevent static electricity damage to the equipment:

Wrist-straps are flexible straps with a minimum of 1 megohm +/- 10% resistance to the ground cords. To provide proper ground, a strap must be worn snug against the skin. On grounded mats without banana-plug connectors, connect a wrist strap with alligator clips.

Heelstraps/Toestraps/Bootstraps can be used at standing work areas and are compatible with most types of boots and shoes. On conductive floors or dissipative floor mats, use them on both feet with a minimum of 1 megohm resistance between operator and ground. To be effective, the conductive strips must be worn in contact with the skin.

Recommended Materials and Equipment

Other materials and equipment that are recommended for use in preventing static electricity include:

■ Anti-static tape

■ Anti-static smocks, aprons, or sleeve protectors

■ Conductive bins, and other assembly or soldering aids

■ Conductive foam

■ Conductive tabletop work areas with ground cord of 1 megohm of resistance

■ Static dissipative table or floor mats with hard tie to ground

■ Field service kits

■ Static awareness labels

■ Wrist-straps and footwear straps providing 1 megohm +/- 10% resistance

■ Material handling packages

■ Conductive plastic bags

■ Conductive plastic tubes

■ Conductive tote boxes

■ Metal tote boxes

■ Opaque shielding bags

■ Transparent metallized shielding bags

■ Transparent shielding tubes

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

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:

● Torx T-9 screwdriver

● 3/16-inch and 7/32-inch nut drivers (for screw locks and standoffs)

● Small, standard screwdriver

● Small, Phillips screwdriver

● Diagnostics software

● Service Kit

Screws

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

IMPORTANT:

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

Return to Removal & Replacement Procedures.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Cable Positions

This section covers types of cables and installation instructions for hard drive cable,

diskette drive, ZIF connectors, CD cables and speaker cable

installation.

Cables and Connectors

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

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

Cables

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

■ Always handle cables by their connectors.

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

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

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

removed or replaced.

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

CAUTION: When servicing these computers, ensure that cables are placed in their proper location during the reassembly process. Improper cable placement can cause severe damage to the unit.

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 Connectors

Compaq 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. Then remove the cable as shown below.

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

Removing a Cable from a ZIF Connector

Position the ribbon cable for the 3.2-GB or 4.0-GB hard drive as shown below.

3.2-GB or 4.0-GB Hard Drive Data Cable Installation

Position the ribbon cable for the CD drive as shown below.

CD Drive Data Cable Installation

Position the ribbon cable for the diskette drive as shown below.

Diskette Drive Data Cable Installation

Position the cable for the speaker assembly as shown below.

Speaker Assembly Cable Installation

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Preparing The Computer For Disassembly

Disassembly Sequence Chart

Removing the Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Status Panel Interface Board Hard Drive Battery Charger

Board

The Compaq 1600 Series computer is a complex tool that must be disassembled in a pre-defined order. Failure to adhere to the order can cause damage to the unit. Start with this screen and work through the screens until the task is complete. Then work through the screens in reverse order to reassemble the computer.

Remove the battery pack before performing any

NOTE:

internal maintenance on the computer.

To prepare the computer for disassembly, complete the following steps:

■ Disconnect AC power and any external devices

■ Remove the battery pack

■ Remove any PC Cards

CD Drive Display Assembly Plastic Subpanel

Assembly CD Drive Cable Speaker Assembly Modem Diskette Drive Fan Audio Assembly

Board System Board Memory Module

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 1600 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.

Compaq Presario 1600 Series Portable Computers have several screws of various sizes which are not interchangeable. Ensure that the correct screws are

NOTE:

used in their correct location. During removal please keep respective screws with their associate subassembly.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removing the Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Status Panel Interface

Board Hard Drive Battery

Charger Board

CD Drive Display

Assembly

To remove the battery pack, complete the following steps:

1. Slide the battery door down

2. Slide the battery pack compartment door down and pull out the battery pack

Plastic Subpanel Assembly

CD Drive Cable

Speaker Assembly

Modem Diskette

Drive Fan Audio

Assembly Board

System Board

Removing the Battery Pack

3. To replace the battery pack, reverse the removal procedure.

Back to

Preparing the Computer for Disassembly

Memory Module

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removing The Palmrest Cover with Touch Pad

The palmrest cover with touch pad is the first component to be removed to gain access to any of the interior components of the computer.

NOTE:

It is not necessary to remove the display panel assembly to access the interior components of the computer.

Removing the Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Status Panel Interface

Board Hard Drive Battery

Charger Board

CD Drive Display

Assembly Plastic

Subpanel Assembly

CD Drive Cable

Speaker Assembly

Modem

Removing the Screws from the Palmrest Cover with Touch Pad

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

1. Prepare

the Computer for Disassembly.

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

3. Remove the three screws from the bottom of the computer as

Diskette Drive

Fan Audio

Assembly Board

System Board

Memory Module

shown.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

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

5. Lift up the front end of the palmrest cover

Removing the Palmrest Cover with Touch Pad

with touch pad and remove it from the groove in the chassis as shown.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

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

Disconnecting the Palmrest Cover with Touch Pad

palmrest cover as shown.

To replace the palmrest cover with touch pad, reverse the removal procedure.

Back to Preparing the Computer for Disassembly

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 metal end should come in contact with the keyboard, damage may occur to the computer.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removing The Keyboard

To remove a cable from a ZIF connector, lift both corners of the ZIF

NOTE:

connector and slide simultaneously with constant light force. Then remove the cable.

Removing the Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Status Panel Interface

Board Hard Drive Battery

Charger Board

CD Drive Display

Assembly Plastic

Subpanel Assembly

CD Drive Cable

Speaker Assembly

Modem

Disconnecting the Flex Cable from the ZIF Connector on the System Board

Prepare the computer for disassembly

2. Remove

the palmrest cover with touch pad

3. Gently lift the front of the keyboard up, and disconnect the flex cable from the ZIF connector on the system board.

Diskette Drive

Fan Audio

Assembly Board

System Board

Memory Module

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

NOTE:

Use a pair of tweezers to properly replace the cable inside of the ZIF connector.

4. Lift the keyboard out of the chassis as shown.

To replace the keyboard, reverse the previous procedures.

Back to Preparing the Computer for Disassembly

Removing the Keyboard

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removing The Heatspreader

Removing the Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Status Panel Interface

Board Hard Drive Battery

Charger Board

Prepare the computer for disassembly.

2. Remove

the palmrest cover with touch pad.

3. Remove

the keyboard.

4. Remove

CD Drive Display

Assembly Plastic

Subpanel Assembly

CD Drive Cable

Speaker Assembly

Modem Diskette

Drive Fan Audio

Assembly Board

two screws from the heatspreader

Removing Screws and Heatspreader

and lift out of the chassis as shown.

To replace the heatspreader, reverse the removal procedures.

Back to Preparing the Computer for Disassembly

System Board

Memory Module

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removing The Status Panel

Prepare the computer for disassembly.

Removing the Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Status Panel Interface

Board Hard Drive Battery

Charger Board

CD Drive Display

Assembly

Releasing and Removing the Status Panel Cover

2. Remove

the palmrest cover with touch pad.

3. Remove

the keyboard.

4. Move the lever (located directly below the CD Play button on the status panel) to the

Plastic Subpanel Assembly

CD Drive Cable

Speaker Assembly

Modem Diskette

Drive Fan Audio

Assembly Board

System Board

Memory Module

right to release the status panel cover.

5. Support the front bottom corners of the status panel with the thumb and forefinger. Rotate and push the status panel backwards off the

NOTE:

chassis as shown below.

When replacing the status panel ensure all cables are properly replaced under the status panel and not obstructing the status panel replacement.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

6. Disconnect the flex cable from the connector on the status panel header as shown below.

To replace the status panel, reverse the removal procedures.

Disconnecting the Flex Cable from the Connector on the Status Panel Header

Back to Preparing the Computer for Disassembly

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removing The Interface Board

Removing the Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Status Panel Interface

Board Hard Drive Battery

Charger Board

Prepare the computer for disassembly.

2. Remove

the palmrest cover with touch pad.

3. Remove

the keyboard.

CD Drive Display

Assembly Plastic

Subpanel Assembly

CD Drive Cable

Speaker Assembly

Modem Diskette

Drive Fan Audio

Assembly Board

Removing the Screws from the Interface Board

4. Remove

the status panel.

5. Remove the two screws from the interface board as shown.

System Board

Memory Module

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

6. Slightly lift the interface board, disconnect the ZIF connector, and backlight

Disconnecting the ZIF Connector and Backlight Power Cable from the Interface Board

power cable from the interface board as shown.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

When removing the interface board with the header attached occasionally the

IMPORTANT:

NOTE:

header will remain attached to the system board. If this occurs when removing the interface board with the header attached, separate the header from the connector on the system board.

When replacing interface board ensure both connectors on the board are properly seated.

7. Lift the interface board up with the header attached from the system board as shown.

To replace the interface board, reverse the previous procedures.

An illustration of locations of connectors on

Removing the Interface Board with Header Attached

the interface board.

Back to Preparing the Computer for Disassembly

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Interface Board

This page shows an Illustration and table of the locations of the connectors on the interface board.

Interface Board Components

Designator Connector

Interface Board Components

1. JP1 Backlight Switch

2. JP3 Display Interface

ZIF

3. JP4 Inverter/Backlight

LIF Connector

4.None Interface Header

Back to Preparing the Computer for Disassembly

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removing The Hard Drive

Removing the Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Status Panel Interface

Board Hard Drive Battery

Charger Board

CD Drive Display

Assembly Plastic

Subpanel Assembly

CD Drive Cable

Speaker Assembly

Modem

Removing the 3.2-GB or 4.0-GB Hard Drive with Mounting Bracket Attached

Prepare the computer for disassembly.

2. Remove

the palmrest cover with touch pad.

3. Remove four screws from the hard drive mounting bracket and lift the hard drive with hard drive mounting bracket attached out of the chassis as shown.

Diskette Drive

Fan Audio

Assembly Board

System Board

Memory Module

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

4. Disconnect the hard drive data cable from the hard drive as shown.

To replace the hard drive, reverse the

Disconnecting the Hard Drive Data Cable from the Hard Drive

previous procedures.

Back to Preparing the Computer for Disassembly.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removing The Battery Charger Board

Prepare the computer for disassembly.

Removing the Battery Pack

Palmrest Cover with Touch Pad

2. Remove

the palmrest cover with touch pad.

Keyboard Heatspreader Status Panel Interface

Board Hard Drive Battery

Charger Board

CD Drive Display

Assembly Plastic

Subpanel Assembly

CD Drive Cable

Speaker Assembly

Modem Diskette

Drive Fan Audio

Assembly Board

System Board

Memory Module

Removing the Screws and the Battery Charger Board

3. Remove

the keyboard.

4. Remove

the hard drives

5. Remove

the stiffener bracket.

6. Remove the two screws from the battery charger board, unplug the board from the system board, and lift out of the chassis as shown.

Back to Preparing the

NOTE:

Computer for Disassembly

When replacing the battery charger board, ensure the pins are aligned with the connector on the system board.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removing The CD Drive

Prepare the computer for disassembly

Removing the Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Status Panel Interface

Board Hard Drive Battery

Charger Board

CD Drive Display

Assembly Plastic

Subpanel Assembly

Removing the Screws from the CD Drive

2. Remove

the palmrest cover with touch pad.

3. Remove

the keyboard.

4. Remove

the hard drives.

5. Remove

the stiffener bracket.

6. Remove

CD Drive Cable

Speaker Assembly

Modem Diskette

Drive Fan Audio

Assembly Board

System Board

Memory Module

the battery charger board.

7. Remove the screw securing the PCMCIA shield.

8. Remove two screws located at the back CD drive and remove the hard drive cable shield as shown.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

9. Open the CD drive tray using a small paper clip as shown.

Opening the CD Drive Tray

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

10. Release the lever on the CD drive tray and gently push forward from the rear of the CD drive to access the CD drive cable as shown.

Releasing the Lever

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Compaq uses two vendors for CD drives and the CD drive cables are unique for each. If the replacement CD drive is the same as the original CD drive, it is not necessary to replace the CD drive

IMPORTANT:

cable.

If the replacement CD drive is different from the original CD drive, the CD drive cable must be replaced with the cable supplied with the replacement CD drive.

11. Disconnect the CD cable from the CD drive and push forward from the rear to remove the CD drive from the chassis as shown.

To replace the CD drive,

Disconnecting the CD Drive Cable from the CD Drive

reverse the previous procedures.

Back to Preparing the Computer for Disassembly.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Removing The Display Assembly

Prepare the computer for disassembly.

Removing the Battery Pack

Palmrest Cover with Touch Pad

Keyboard Heatspreader Status Panel Interface

Board Hard Drive Battery

Charger Board

CD Drive

2. Remove

the palmrest cover with touch pad

3. Remove

the keyboard.

4. Remove

the heatspreader.

Removing the Hinge Covers

5. Remove

the status panel.

Display Assembly

Plastic Subpanel Assembly

CD Drive Cable

Speaker Assembly

Modem Diskette

Drive Fan Audio

Assembly Board

System Board

Memory Module

6. Remove

the interface board.

7. Disconnect

the ZIF connector and backlight power cable from the interface board.

8. Grasp the hinge covers and push out to release the covers from the hinges of the display panel assembly as shown.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

9. Support the back of the display assembly and remove the four screws from the display assembly as shown.

Removing Screws from the Display Assembly

Maintenance & Service Guide

Presario 1600 Series Portable Computers

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10. Gently pull the flex cable attached to the display assembly through the slot on the plastic subpanel assembly.

11. Remove the

Removing the Display Assembly with Flex Cable Attached

display assembly with flex cable attached as shown.

Back to Preparing the Computer for Disassembly.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

4. Pull side lever to release the memory modules and unplug the memory modules from the system board as shown.

To replace the memory modules,

Removing the Memory Module from the System Board

reverse the previous procedures.

Back to Preparing the Computer for Disassembly.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Rear Connectors

This section identifies the I/O pass-through connectors on the computer. Refer to Appendix A for connector pin assignments.

Models and Features

Rear Connectors

1. Keyboard/ Mouse Port

5. Port Serial Port

Rear Connectors

Port Replicator

Power Management

Rear Connectors

2. Parallel Printer Port

3. Port Replicator 7. AC Adapter Jack

4. Fan Exhaust 8. Security Slot

6. External Monitor

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Port Replicator

Models and Features

Rear Connectors

Port Replicator

Power Management

This section is an overview of the Compaq Presario Series Portable Computer Port Replicator and covers the following topics:

■ System Overview

■ Features

■ Port Replicator Rear Connectors

■ 80-Pin Connectors

System Overview

A manual docking mechanism on the Compaq Presario Series Portable Computer Port Replicator docks Compaq Presario Series Portable Computers. When the computer is docked, the 80-pin

external options connector handles the entire electrical interface (both

power and signal connections) between the computer and the

Replicator Rear Connectors.

Port

Features

The Compaq Presario Series Portable Computer Port Replicator provides all the connectors supported by the Compaq Presario Series Portable Computers. They include:

■ External keyboard

■ External mouse

■ MIDI/game port

■ External monitor

■ Serial

■ Parallel

■ AC Adapter

■ Dual USB ports (Not supported on all models.)

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Power Management

Models and Features

Rear Connectors

Port Replicator

Power Management

The following power management features are available for conserving AC power and extending battery operating time:

■ Advanced Power Management (APM)

■ Power Management Settings

■ Sleep

■ Hibernation

■ Battery Operating Time

Advanced Power Management (APM)

APM is installed on the computer and requires no action from the user to reduce power consumption. APM turns off the processor between keystrokes and when the system is idle. The idle function can be disabled by the user.

Power Management Settings

You can select power conservation settings through Power Management located on the System Features menu in Computer Setup. Computer Setup can be accessed by pressing F10 when the cursor blinks on the upper-right corner of the display screen during system reboot. These settings control the power conservation rate and the timeout values for various system components. A timeout is a specified period of system or component inactivity. After this period, the system or component (for example, the hard drive) is shut down to conserve power until it is accessed again.

There are four categories of power management settings: Maximum Power Saving, Maximum Performance, Customized, and Disabled. The default setting for each feature is listed in Table 1-9.

Power Management Mode

Power

Savings

Idle Mode* Off, On,

Sleep Timeout Off, 5, (10),

Resume On Time

Settings Maximum

Power

Savings

On Off Off

(Auto)

5 Minutes 60 Minutes Off 15, 20, 30, 40, 60 Minutes

(Off), On (Off), On (Off), On (Off), On

Maximum

Performance

Disabled

Resume Time Hard Disk

Timeout

BIOS PM on AC(Off), On (Off), On (Off), On (Off), On

(00:00:00) (00:00:00) (00:00:00) (00:00:00)

Disabled, 1, 2, 4, (5), 6, 8, 10, 15

1 Minute 15 Minutes Disabled

(Defaults) cannot be modified

* Idle Mode: Determines processor speed. For Auto,

processor is throttled to 50% of maximum clock sped only during inactivity. When On, processor is always at 50% of maximum clock speed. When Off, processor is always at maximum clock speed.

Sleep

Sleep is a power conservation mode that performs the following functions:

■ Places the computer in a lower power state after a selectable period of

inactivity. Noticeable to the end-user, the panel is powered off and the hard drive is spun down.

■ Automatically reduces the amount of power the computer uses.

■ The computer is immediately ready for use when any key is pressed.

■ Sleep mode is indicated by the Sleep (moon shaped) icon on the

Status Panel.

The computer may be manually put in Sleep mode by pressing the Fn + F4 keys.

Hibernation

Hibernation is a power conservation mode that performs the following functions:

■ Saves all current information from memory and saves it to a file on

the hard drive.

■ Turns off the computer.

■ Can be restored after any amount of time.

The Hibernation file is preinstalled on the hard disk. The Hibernation file is slightly larger than the total RAM memory of the computer (system memory, memory expansion board, and video memory). The Hibernation 100-MB file can be reinstalled with the QuickRestore CD. The system comes configured with a hibernation file large enough to support 96 MB of DRAM. Please refer to C:\HIBERNATE\HELP.TXT to customize the hibernation file size.

Hibernation is initiated by one of the following means:

■ Automatically when the battery reaches a low battery level, if

preselected.

■ Manually by simultaneously pressing the power button. By holding

the power button for more than four seconds, the system will power off instead of hibernating.

When the Power button is pushed, the computer exits Hibernation.

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

Refer to Appendix B for information on increasing battery pack operating time, conditioning the battery pack, and

disposing of a used battery pack.

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

Port Replicator Rear Connectors

This section covers external input/output (I/O) connectors. Refer to Appendix

A for connector pin assignments.

Port Replicator

Rear Connectors

Port Replicator Rear Connectors

1. Keyboard 6. External Monitor

2. Mouse 7. Serial

3. Reserved 8. Parallel

4. Reserved 9. AC Adapter

MIDI/Game Pad/Joystick

Maintenance & Service Guide

Presario 1600 Series Portable Computers

Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack

80 Pin Connectors

The 80-pin Compaq Presario 1600 Series Portable Computer Port Replicator connector handles the entire electrical interface between the port Replicator and the computer.

CAUTION: Turn the computer power switch off before you connect or disconnect the port Replicator. Damage may occur to the computer if it is "hot" plugged to the port Replicator.

Port Replicator Computer Interface

Compaq Presario 1625, Presario 1636, Presario 1635, Presario 1624 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual