Compaq presario 1660 schematic

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Notice Preface Product

Description Troubleshooting Illustrated Parts

Catalog Removal &

Replacement Procedures

Specifications Connector Pin

Assignments Battery Pack

Operations

See the Notice for copyright and trademark information, and see the Preface for symbol conventions, Technician Notes and Serial Number locations on the unit.

For content comments or questions, contact the contact your Regional Support Center or IM Help Center.

This MSG will be periodically updated online as needed.

Editor. To report a technical problem,

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Notice

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

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

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

Compaq, Presario 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 1660 Model Portable Computers

First Edition (December 1999) Compaq Computer Corporation

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Preface

This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the Compaq Presario 1660 Model Portable Computers. Compaq Computer Corporation reserves the right to make changes to the Compaq Presario 1660 Model 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 1660 Model Portable Computer documentation set

● Introducing Windows 95 Guide

● Service Training Guides

● Compaq Service Advisories and Bulletins

● Compaq QuickFind

● Compaq Service Quick Reference Guide

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Product Description

Models and Features

Upper Unit Components

Front Bezel Buttons

Front Bezel Lights

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

Power Management for Windows 98

Compaq Presario 1600 Portable Computer is a continuation of the new generation of multimedia portable computers with an innovative integrated design, outstanding audio and video, advanced core features, and attractive styling. This full-function portable computer allows full desktop functionality.

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Troubleshooting

Preliminary Steps

Clearing the Power-On Password

Power-On Self Test (POST)

Compaq Diagnostics

Diagnostic Error Codes

Troubleshooting Without Diagnostics

Solving Minor Problems

Contacting Compaq Support

This section covers troubleshooting information for the Compaq Presario 1660 Model Portable Computer. The basic steps in troubleshooting include:

1. Follow the

Preliminary Steps.

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

3. Follow the recommended actions described in the diagnostic tables, if you are unable to run POST or if POST displays an error message.

When following the recommended actions in the Sections on POST and

Diagnostic Error Codes perform them in

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

If the problem is intermittent, check the computer several

NOTE:

times to verify that the problem is solved.

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Illustrated Parts Catalog

System Unit Boards Display

Assembly Mass Storage

Devices Miscellaneous

Cable Kit External

Cables Miscellaneous

Hardware and Plastics Kits

Miscellaneous Parts

This section provides a breakdown and identifies the spare parts ordering number associated with items for the Compaq Presario 1660 Model Portable Computers.

Documentation and Software

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Removal and Replacement Procedures

This section explains the removal and replacement procedures for the computer.

Serial Number Location

Disassembly Sequence

Electrostatic Discharge

Service Considerations

Cables and Connectors

Preparing the Computer for Disassembly

Battery Pack Palmrest

Assembly Keyboard and

Heatspreader Processor Hard Drive Upper CPU

Cover DVD Drive Battery

Charger Board Modem Display Panel

Assembly Speaker

Report the computer serial number to Compaq when requesting information or ordering spare parts.

Assembly Diskette Drive Fan Assembly System Board Memory

Module

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Connector Pin Assignments

This appendix provides connector pin assignment tables for Compaq Presario 1660 Model Portable Computers. For more information on connectors, refer to the section on Rear Connectors.

NOTE: The signals in all tables of this appendix are considered active high unless otherwise indicated by an asterisk (*).

Parallel Connector

Pin Signal Pin Signal

1 Strobe* 10 Acknowledge* 2 Data Bit 0 11 Busy 3 Data Bit 1 12 Paper Out 4 Data Bit 2 13 Select 5 Data Bit 3 14 Auto

Linefeed* 6 Data Bit 4 15 Error* 7 Data Bit 5 16 Initialize

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

Serial Connector

Connector Pin Signal

1 2

Carrier Detect

Receive Data 3 4 5 6 7 8 9

Transmit Data

Data Terminal

Ready

Signal Ground

Data Set Ready

Ready to Send

Clear to Send

Ring Indicator

Keyboard/Mouse

Connector Pin Signal

1 2 3 4 5 6

Data 1

Clock 2

Ground

+5 V

Clock 1

Data 2

External VGA Monitor

Connector Pin Signal

1 2 3 4 5 6 7 8 9 10 11 12

Red Analog Green Analog Blue Analog Not connected Ground Ground Analog Ground Analog Ground

Analog 13 14 15

Not

connected

Ground

Monitor

Detect

DDC2B Data

Horizontal

Sync

Vertical Sync

DDC2B Clock

Universal Serial Bus

Connector Pin Signal

Modem

Connector Pin Signal

1 2 3 4 5

Unused Unused Tip Ring Unused

1 2 3 4

+5V Data Data + Ground

Unused

Port Replicator

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 USB 0 - 49 MIDI Out 69 V. Sync 10 Joystick Data D 30 USB 0 + 50 +5V 70 Ground 11 Lp Select In 31 USB 1 - 51 +5V 71 H. Sync 12 Lp Paper End 32 USB 1+ 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 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Battery Pack Operating Time

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

● Increase battery pack operating time

● Conditioning a battery pack

● Disposal of a used battery pack

Increasing Battery Pack Operating Time

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

● Power management settings

● Hardware configuration

● Software applications

● Installed options

● Display brightness

● Hard drive usage

● Changes in operating temperature

● Type and number of installed PC Cards

The power consumption requirements

NOTE:

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. Allow the battery to drain until the computer reaches hibernation and turns itself off. Do not plug in the AC adapter during this process. Also, the system should not be allowed to sleep. To prevent sleep, you may either use the computer while the battery is draining, or you may disable power management.

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

Your battery is now re-conditioned, and you may begin using the computer normally.

The battery pack charge time may vary greatly from 2 hours to 5 hours or more, depending on many factors (including whether it is charged on-line or off-line).

Disposal of a Used Battery Pack

In the interest of safeguarding our environment. Compaq Computer Corporation recommends that nickel metal hydride (NiMH) and lithium ion (Li ion) battery packs be recycled. Battery packs should be handled in accordance with country, state, province, or local regulations.

CAUTION: Never attempt to open or service a battery pack. Opening a battery pack not only damages the pack and makes it unusable, but also expose potentially harmful battery components.

Top of Page

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Models and Features

Upper Unit Components

Front Bezel Buttons

Front Bezel Lights

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

Compaq Presario 1660 Model Portable Computer

Display Processor Hard

13.3" TFT

300 MHz Pentium II 4 GB

Drive Memory CD Drive Modem Battery

64 MB or 128 MB SDRAM DVD

56 Kbps Data/Fax with ITU V.90 High Capacity Li Ion

Power Management for Windows 98

Maintenance & Service Guide

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Controls and Lights

Presario 1660 Model

Models and Features

Upper Unit Components

Front Bezel Buttons

Front Bezel Lights

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

Display

Power (On/Off) Button

Keyboard

Touch Pad

Left Touch Pad Button

Headphone Jack

Microphone Jack

Right Touch Pad Button

Speakers and Ports

Power Management for Windows 98

Maintenance & Service Guide

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Front Bezel Buttons

Presario 1660 Model

Models and Features

Upper Unit Components

Front Bezel Buttons

Front Bezel Lights

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

Power Management for Windows 98

Instant Internet Access Button

Instant Search Button

Volume Down

Scroll Up/down Button

Volume Up

Secure ECommerce Button (or Favorite Web site)

Instant E-Mail Button

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Front Bezel Lights

Maintenance & Service Guide

Presario 1660 Model

Pin Assignments | Battery Pack Operations

Models and Features

Upper Unit Components

Front Bezel Buttons

Front Bezel Lights

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

Power

Battery Charge

AC Adapter

Num Lock

Cap Lock

Scroll Lock

Power Management for Windows 98

Maintenance & Service Guide

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Left Side Components

Presario 1660 Model

Models and Features

Upper Unit Components

Front Bezel Buttons

Front Bezel Lights

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

1. PC Card Eject Lever

3. Diskette Drive Slot

2. PC Card Slot 4. Diskette Eject Button

Power Management for Windows 98

Maintenance & Service Guide

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Right Side Components

Presario 1660 Model

Models and Features

Upper Unit Components

Front Bezel Buttons

Front Bezel Lights

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

1 Battery

Compartment 2 DVD Drive 3 DVD Drive Eject

Button 4 Manual DVD Eject

Hole

Power Management for Windows 98

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Bottom of Unit

Maintenance & Service Guide

Presario 1660 Model

Pin Assignments | Battery Pack Operations

Models and Features

Upper Unit Components

Front Bezel Buttons

Front Bezel Lights

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

1. Memory

Compartment

2. Feet

Power Management for Windows 98

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Rear Connectors

Maintenance & Service Guide

Presario 1660 Model

Pin Assignments | Battery Pack Operations

Models and Features

Upper Unit Components

Front Bezel Buttons

Front Bezel Lights

Left Side Components

Right Side Components

Bottom of Unit

Rear Connectors

1. AC Adapter

2. USB

3. Security Slot

4. Serial Port

5. Port Replicator Port

6. External Monitor Port

7. Parallel Printer Port

8. Keyboard/Mouse Port

9. Modem Jack

Power Management for Windows 98

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Power Management for Windows 98

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

● Power Management Settings

● Sleep

● Hibernation

● Battery operating time

● Rebooting After a Lockup

● Servicing Your Computer - Full Off Mode

Power Management Settings

Depending on your patterns of computer use, you can set different levels of power management. These different power management levels can be activated based on the amount of time passed since the last system activity. System activity examples include keyboard or mouse movement, CD or DVD playback (while under program control that monitors Sleep), and modem use.

Each of the following system components can be made to go to sleep after periods of inactivity:

● system (goes into Sleep (Standby) mode)

● screen (times out and goes blank)

● hard drive (spins down)

You can select different conditions or power schemes through Power Management.The optional settings are Home/Office Desk, Portable/ Laptop, and Always On. From the default settings, you can change the delay time settings. Note: the setting for hard drive must be less than or equal

to the setting for System.

IMPORTANT:

Never.

There are five categories of power management settings under the Control Panel. The default setting for each feature is listed below in the tables.

Power Management Properties

Tab: Power Schemes: Plugged in Running on

Batteries

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

Always on System Standby:

Turn OFF Monitor Always on System

Standby:

Never 15 minutes

After 15 minutes After 10 minutes After 15 minutes After 10 minutes

Power Management Properties

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

Text Action No Action

Power Management Properties

Tab: POWER METER: Default Tab: ADVANCED Default

Display Properties

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

Sleep

You can select Sleep mode instead of turning off the computer when you have finished using it. This allows the computer to wake up faster than turning it completely off and saves power over the active (On) mode. Compaq Presario Notebook computers have two levels of sleep, Hibernation and Sleep.

Hibernation - by pushing the power button once your computer will perform a save to disk followed by a shut down of the computer into Off mode.

Sleep - is a low power mode, also referred to as Standby mode. While in Sleep mode, your computer will maintain system information and open files. Unsaved information will be lost if you turn off your system prior to system wake-up, or if you lose power while using the AC adapter.

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

files. Unsaved information will be lost if you turn off your system prior to system wakeup, or if you lose power while using the AC adapter.

Hibernation Mode

Hibernation helps conserve battery life and protects your data. Hibernation can be a routine power saving event, or can be the result of a low battery condition. As it enters Hibernation your computer will display a progress screen, as it automatically saves the machine state before it shuts down and turns itself off. Your computer will automatically go into Hibernation, when the battery has little power left, or when the system (operating on battery power) has been in Sleep mode for more than an hour. You can also manually initiate Hibernation by pressing the power button once while the system is active. To restore the computer's previous state, simply press the power button once again. While waking up, the computer will display a progress screen.

The following table shows the conditions and indicators for getting in and out of the various power management modes, Sleep, Hibernation, and Off.

Mode To Initiate To End Indicators

Sleep

Manual keys combination

- Fn+F4

Time Out Default 15 minutes. If

Press any key

Flashing green Power LED

on Battery power (system will not go to Sleep if on AC power)

Hibernate

Manual - Press Power Button once

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

Off Perform normal Windows

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

Press Power Button once

No Power LED, blank screen

Servicing Your Computer - Full Off Mode

If you need to install or replace components in your system, you must turn the computer off completely. Follow the instructions above for properly putting the computer into Off mode, unplug from the outlet, and remove the battery (see battery section for instruction on removing battery).

Rebooting After a Lockup

Occasionally you may encounter a frozen keyboard or a locked screen. To reboot your computer (as if from a cold start) press and hold down the Power Button for at least four seconds, which will cause a manual shutdown. Then, restart it with a single press of the Power Button. If it still doesn't recover, press the Power Button and hold it for four seconds to shut it down, then, remove the battery or unplug the AC power for at least 30 seconds. Reinsert the battery or reconnect AC power and press the Power Button once to reboot.

Battery Operating Time

Battery operating time is affected by variables, such as the following:

● Power conservation settings

● Hardware configuration

● Software applications

● Installed options

● Display brightness

● Hard drive usage

● Power button

● Changes in operating temperature

● Type and number of installed PC Cards

For more information on increasing battery pack operating time, conditioning the battery pack, and disposing of a used battery pack, refer to the

Battery Pack Operations.

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Preliminary Steps

Before running POST, complete the following preliminary steps:

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

clear the password.

2. Run Computer Checkup.

3. Turn off the computer and its external devices.

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

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

IMPORTANT:

the external device or its cable. Verify this by running POST with and without the external device connected.

5. Install loopback plugs in the serial and parallel connectors if you would like to test these ports.

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

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

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

POST.

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Clearing the Power-on Password

Clearing the power-on password requires removing all Setup attributes that are programmed in the CMOS.

If the password is not known, clear it by removing the RTC battery (located on the system board) as follows:

1. Turn off the computer.

2. Disconnect the power cord.

Remove the battery

pack.

4. Remove the palmrest

assembly.

5. Remove the

keyboard and heatspreader.

6. Remove the modem

7. Remove RTC battery for 10 seconds, then

replace it .

8. Reassemble the

computer.

9. Turn on the

computer to verify that the power-on password has been cleared. If it has not been cleared, repeat all steps above.

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Power-On Self Test (POST)

Running POST

To run POST, turn off the computer, then turn it 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 the following tables for a list of POST codes and their relevant descriptions. If there is more than one recommended action, only try the later actions in the list if the first action recommended does not solve the problem.

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

NOTE:

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

102 162

XX000YZZ 201

301 304 601 605 1780 1782

System board failure System options not set

Memory Error

Keyboard Error Keyboard or System Unit Error Diskette Controller Error Diskette Drive Error Primary Hard Drive 0 Failure Hard Drive Controller

Power-On Self-Test Messages

102-System Board Failure

Probable Cause Recommended Action

DMA, timers, etc.

Replace the system board.

162-System Options Not Set

Probable Cause Recommended Action

Configuration incorrect CMOS reflects that an

Run Computer Setup.

invalid configuration has been set.

XX000YZZ 201-Memory Error

Probable cause Recommended action

RAM failure 1. Replace the memory

modules.

Replace the system board.

Memory test data error

Replace the memory

modules.

Replace the system board.

XX000YZZ RAM

Replace the system board.

failure

301-Keyboard Error

Probable

Recommended Action

Cause

Keyboard failure 1. Ensure the keys are not depressed during POST.

2. Reconnect the keyboard with the computer off.

3. Replace the keyboard.

304-Keyboard or System Unit Error

Probable Cause

Keyboard or system board error

601-Diskette Controller Error

Probable Cause

Mismatch in drive type or failure in the diskette controller

Recommended Action

1. Replace the keyboard.

2. Replace the TouchPad or mouse.

Replace the system board.

Recommended Action

Run Computer Checkup

(TEST).

2. Check and/or replace cables.

Replace the system board.

605-Diskette Drive Error

Probable Cause

Mismatch in drive type

Recommended Action

Run Computer Setup.

1780-Primary Hard Drive 0 Failure

Probable Cause Recommended Action

Disk 0 failed to respond

Run Computer Checkup

(TEST).

Replace the hard drive.

Hard drive format error

1782-Hard Drive Controller

Probable Cause

Hard drive controller failure

Recommended Action

Run Computer Checkup

(TEST).

Replace the hard drive.

Run Computer Setup. Replace the hard drive.

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Compaq Diagnostics

Compaq Diagnostics is installed on the hard drive of the computer. Run the Diagnostics utilities when you want to view or test system information and if you have installed or connected devices. If you run Compaq Diagnostics from a diskette, ensure that it is version 10.11 or later.

The Diagnostics menu includes the following utilities:

■ Computer Setup

■ Computer Checkup (TEST)

■ View System Information (INSPECT)

■ Prepare Computer for a Compaq Service Call (RemotePaq)

If you have a problem you cannot solve, run the Diagnostics utilities before you call for support. Run Computer Checkup and select to save the device list to a file and to print or to save the log of errors. Run the View System Information (INSPECT) utility and select to print or to save that information. Have the files or the printed information available when you call for support.

Computer Setup

The Computer Setup utility resides in a hidden partition on the hard drive. It gives you a snapshot of the computer's hardware andconfiguration, aids in troubleshooting, and allows you to set custom features.

Access Computer Setup when you want to:

● Modify settings for audio, storage, communications, and input devices

● Get an overall picture of the computer's hardware configuration

● Verify configuration parameters in determining problems

● Configure options

● Update time, date, or password information

To run Computer Setup:

Go to the Compaq Utilities menu and select the Computer Setup option. Follow the on-screen instructions to complete your chosen task.

Computer Checkup (TEST)

Computer Checkup (TEST) determines whether the various computer components and devices are recognized by the system and are functioning properly. You can display, print, or save the information generated by Computer Checkup.

Follow these steps to run Computer Checkup:

1. Plug the computer into an external power source. (A low battery condition could interrupt the program.)

2. Turn on the external devices that you want to test. Connect the printer if you want to print a log of error messages.

3. Insert the Compaq Diagnostics diskette in drive A.

4. Turn on or restart the computer. The computer starts from drive A, and the Diagnostics Welcome screen appears.

5. Press Enter to continue. The Diagnostics menu appears.

6. Select Computer Checkup from the Diagnostics menu. A Test Option menu appears.

7. Select View the Device List from the Test Option menu. A list of the installed Compaq devices appears.

8. If the list of installed devices is correct, select OK. The Test Option menu appears.

If the list is incorrect, ensure that any new

NOTE:

devices are installed properly.

9. Select one of the following from the Test Option menu:

■ Quick Check Diagnostics. Runs a quick, general test on each device with a

minimal number of prompts. If errors occur, they display when the testing is complete. You cannot print or save the error messages.

■ Automatic Diagnostics. Runs unattended, maximum testing of each device with

minimal prompts. You can choose how many times to run the tests, to stop on errors, or to print or save a log of errors.

■ Prompted Diagnostics. Allows maximum control over testing the devices. You

can choose attended or unattended testing, decide to stop on errors, or choose to print or save a log of errors.

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

11. Exit the Test Option menu.

12. Exit the Diagnostics menu.

View System Information (INSPECT)

The View System Information (INSPECT) utility provides information about the computer and installed or connected devices. You can display, print, or save the information.

Follow these steps to run View System Information (INSPECT) from the Compaq Diagnostics diskette:

1. Turn on the external devices that you want to test. Connect the printer if you want to print the information.

2. Insert the Compaq Diagnostics diskette in drive A.

3. Turn on or restart the computer. The computer starts from drive A, and the Diagnostics Welcome screen appears.

4. Press Enter to continue. The Diagnostics menu appears.

5. Select View System Information (INSPECT) from the Diagnostics menu.

6. Select the item you want to view from the following list:

System Memory ROM Audio Keyboard Operating system System ports System files System storage Windows files Graphics

7. Follow the instructions on the screen to cycle through the screens, to return to the list and choose another item, or to print the information.

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Contacting Compaq Support

Obtain the following information before contacting Compaq Reseller Support:

● Product name

● Product serial number

● Purchase date

● Conditions under which the problem occurred

● Any error messages that have occurred

● Hardware configuration

● Type of printer connected

● Hardware/software being used

● Printed result of Computer Checkup (TEST)

● Printed copies of CONFIG.SYS and AUTOEXEC.BAT files, if possible

Shipping Preparation

To ship the computer, complete the following steps:

1. Back up the critical hard drive files. Ensure that backup tapes/diskette are not exposed to electrical or magnetic fields while stored in transit.

2. Turn off the computer and external devices.

3. Disconnect the external devices from their power sources, then from the computer.

Ensure that there is no diskette in the

IMPORTANT:

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

4. Close the display and all exterior doors of the computer.

5. Pack the computer with sufficient packing material to protect it. Use the original packing box or similar packaging.

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Diagnostic Error Codes

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

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

Retest the system after completing each

IMPORTANT:

For the removal and replacement of a particular subassembly, see Removal and Replacement

Procedures.

Select error codes by number or type:

step. If the problem has been resolved, do not proceed with the remaining steps.

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 3305 CD or DVD Test 6600 through 6623

Processor Test Error Codes Error

Code Description Recommended Action

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

Utilities.

2. Replace the processor board and retest. 103-xx DMA page registers test failed Replace the system board and retest. 104-xx Interrupt controller master test failed 105-xx Port 61 error 106-xx Keyboard controller self-test failed 107-xx CMOS RAM test failed 108-xx CMOS interrupt test failed 109-xx CMOS clock test failed 110-xx Programmable timer load data test

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

2. Verify cable connections to speaker.

3. Replace the system board and retest.

Memory Test Error Codes

200-xx Memory machine ID test failed 1. Flash the system ROM and retest. 202-xx Memory system ROM checksum failed 203-xx Write/Read test failed 1. Remove the memory module and retest. 204-xx Address test failed 211-xx Random pattern test failed 214-xx Noise test failed 215-xx Random address test failed

Keyboard Test Error Codes

300-xx Failed ID Test 1. Check the keyboard connection. If 301-xx Failed Selftest/Interface Test 302-xx Failed Individual Key Test 304-xx Failed Keyboard Repeat Test

2. Replace the system board and retest.

2. Install a new memory module and retest.

disconnected, turn off the computer and connect the keyboard.

2. Replace the keyboard and retest.

3. Replace the system board and retest.

Parallel Printer Test Error Codes

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

2. Check power to the printer.

402-xx Failed Port Test

403-xx Printer pattern test failed

Diskette Drive Test

600-xx 601-xx Diskette format failed

602-xx Diskette read test failed 603-xx 604-xx Diskette random read test failed

605-xx Diskette ID media failed 606-xx Diskette speed test failed

Diskette ID drive types test

failed

Diskette write, read, compare test

failed

3. Install the loop-back connector and retest.

4. Check port and IRQ configuration.

5. Replace the system board and retest.

1. Replace the diskette media and retest.

2. Check and/or replace the diskette power and signal cables and retest.

3. Replace the diskette drive and retest.

4. Replace the system board and retest.

609-xx Diskette reset controller test failed 610-xx Diskette change line test failed 697-xx Diskette type error 698-xx Diskette drive speed not within limits

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

2. Run the Configuration and Diagnostics Utilities.

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Diagnostic Error Codes (continued)

Serial Test Error Codes

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

2. Replace the system board and retest.

Hard Drive Test Error Codes

1701-xx Hard drive format test failed 1. Run the Configuration and Diagnostics 1702-xx Hard drive read test failed 1703-xx Hard drive write/read/compare test failed 1704-xx Hard drive random seek test failed 1705-xx Hard drive controller test failed 1706-xx Hard drive ready test failed 1707-xx Hard drive recalibration test failed 1708-xx Hard drive format bad track test failed 1709-xx Hard drive reset controller test failed 1710-xx Hard drive park head test failed 1715-xx Hard drive head select test failed 1716-xx Hard drive conditional format test failed 1717-xx Hard drive ECC* test failed 1719-xx Hard drive power mode test failed 1724-xx Network preparation test failed

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.

1736-xx Drive monitoring test failed * ECC = Error Correction Code

Video Test Error Codes

501-xx Video controller test failed The following apply to error codes 501-xx 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

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

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.

510-xx Video 640 × 200 mode test failed 511-xx Video screen memory page test failed 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 codes 24022403-xx Video attribute test failed 2404-xx Video character set test failed

2405-xx

2406-xx

2408-xx

2409-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

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 Video 640 × 200 mode test failed 2411-xx Video screen memory page test failed 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 failed 1. Run the Configuration and Diagnostics 2421-xx ECG/VGC 640 × 200 graphics mode test

failed

2422-xx ECG/VGC 640 × 350 16 color set test

failed

2423-xx ECG/VGC 640 × 350 64 color set test

failed

2424-xx ECG/VGC monochrome text mode test

failed

2425-xx ECG/VGC monochrome graphics mode

test failed

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.

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 24582468-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 retest.

TouchPad/Pointing Device Interface Test Error Codes

xx through 2480-xx:

Replace the system board and retest.

8601-xx Mouse test failed 1. Replace the TouchPad and retest. 8602-xx Interface test failed

CD or DVD Drive Test Error Codes

3301-xx CD / DVD drive read test failed 1. Replace the CD / DVD and retest. 3305-xx CD / DVD 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

2. Replace the system board and retest.

2. Verify that the speakers are connected.

3. Verify that drivers are loaded and properly installed.

4. Replace the CD / DVD drive and retest.

5. Replace the system board and retest.

Maintenance & Service Guide

Presario 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

Troubleshooting Without Diagnostics

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

topics:

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

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

WARNING: To avoid a potential shock hazard during troubleshooting

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

Before Replacing Parts

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

■ Run Computer Setup after connecting external devices.

■ Verify that all required device drivers are installed.

■ 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 1660 Model

Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications

Pin Assignments | Battery Pack Operations

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.

Audio Battery pack Battery gauge CD/DVD drive Diskette/diskette drive Display Hard drive

Hardware installation Keyboard Memory PC card Power Printer Touchpad/pointing device

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.

Battery Pack and Battery Gauge Problems (see also Power Problems)

Problem Probable Cause Solution(s)

Computer won't turn on when battery pack is inserted and power cord is unplugged.

Computer is beeping and battery LED icon is blinking.

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

Battery pack is discharged. 1. Connect the computer to an external power source and

charge the battery pack.

2. Replace the battery pack with a fully charged battery pack.

Battery connectors may be bent or broken.

Battery charge is low. Immediately save any open file(s). Then either:

Volume is turned down too low. Adjust the volume.

Check the battery connectors on the system board to verify they are evenly spaced and that they are not bent or broken.

● Connect the computer to an external power source

to charge the battery pack, or

● Turn off the computer or initiate Hibernation until

you can find another power source or charge the battery pack.

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

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

Battery pack is warm to the touch after charging.

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

Battery pack is already charged. No action is necessary. Battery pack was exposed to

temperature extremes. Battery pack is at end of its life. Replace battery pack. RTC battery is dead. Replace the RTC 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.

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

No action is required.

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

Turn off or disconnect external devices when not using them.

Condition the battery pack by fully charging, fully discharging, then fully recharging it.

To maintain the charge, leave battery packs in the computer when it is connected to external power.

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

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

Keep the battery pack within the recommended temperature ranges: Operating: 50° F to 104° F (10° C to 40° C) Storage: -4° F to 86° F (-20° C to 30° C )

Recharge the battery pack.

CD/DVD Drive Problems

Problem Probable Cause Solution(s)

CD / DVD drive cannot read a compact disc.

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

Trying to read a CD Plus or Pregap/Track 0 type disc with a 24x CDROM drive.

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

None - these types of CD are unreadable with this drive.

Diskette and Diskette Drive Problems

Problem Probable Cause Solution(s)

Diskette drive cannot write to a diskette.

Diskette is write-protected. Disable the diskette's write-protect

feature or use a diskette that is not write-protected.

Computer is writing to the wrong drive.

Check the drive letter in the path statement.

Diskette drive cannot read a diskette.

Not enough space is left

Use another diskette.

on the diskette. Drive error has occurred. Run Computer Checkup from the

Compaq Diagnostics diskette.

Diskette is not formatted. Format the diskette. At the system

prompt, enter

FORMAT A:

The wrong type of diskette is being used.

Use the type of diskette required by the drive.

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

diskette. Reformat bad floppy.

Drive error has occurred. Run Computer Checkup from the

Compaq Diagnostics diskette.

Diskette is not formatted. Format the diskette. At the system

Cannot boot from diskette.

Bootable diskette is not in drive A.

Diskette Boot has incorrect setting in Computer Setup.

prompt, enter

FORMAT A: Put the bootable diskette in drive A.

Run Computer Setup and set diskette as first to boot.

+ 60 hidden pages