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Compaq 1200US - Presario - Celeron 800 MHz Maintenance And Service Manual

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Download this manual See also: Maintenance and Service Manual
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252

Before You Begin

Removal Sequence
Product Description
Before You Begin
Notice
Preface
Product
Description
Troubleshooting
Illustrated Parts
Catalog
Removal &
Replacement
Procedures
Specifications
Connector Pin
Assignments
Battery Pack
Operations
Presario 1200 Series
Specifications
Troubleshooting
Pin Assignments
Welcome to the Maintenance & Service Guide
(MSG). This online guide is designed to serve the
needs of those whose job it is to repair Compaq
products. Many of the components of the hardcopy
MSG are contained in this online guide. The Notice,
contains the copyright and trademark information.
The
Preface
shows symbol conventions, Technician
Notes and Serial Number locations on the unit.
This MSG will be periodically maintained and
updated online as needed.
For content comments or questions, contact
Support.
Parts Catalog
Battery Operations
Index
Tech

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Summary of Contents for Compaq 1200US - Presario - Celeron 800 MHz

  • Page 1: Before You Begin

    Welcome to the Maintenance & Service Guide (MSG). This online guide is designed to serve the needs of those whose job it is to repair Compaq products. Many of the components of the hardcopy MSG are contained in this online guide. The Notice, contains the copyright and trademark information.
  • Page 2 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. Ó 1998 Compaq Computer Corporation.

  • Page 3: Technician Notes

    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.

  • Page 4: Product Description

    Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Product Description Compaq Models and Presario Features Portable Controls and Computer, Lights the new generation Left Side...
  • Page 5 Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Models and Features Models and Compaq Presario 1200 Series Portable Computer Models Features Model Model Controls and 1234 1235 Lights Display 12. 1" HPA 12. 1" HPA or 12. 1" TFT...

  • Page 6: Models And Features

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Models and Features Model Model 1238 1240 Display 12. 1" HPA 12.

  • Page 7: Controls And Lights

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Controls and Lights Models and Features Controls Front of Unit and Lights 1.

  • Page 8: Left-Side Components

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Left Side Components Models and Left Side Components Features 1. PC Controls and Card Diskette...

  • Page 9: Right-Side Components

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Right Side Components Models and Right Side Components Features 1. Battery 3.
  • Page 10 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Bottom of Unit Models and Bottom of Unit Features 1. Memory 2.
  • Page 11 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Rear Connectors Models and Rear Connectors Features 1. AC Adapter 6.

  • Page 12: Power Management Settings

    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.

  • Page 13: Troubleshooting

    Battery Operations Product Description Pin Assignments Index Troubleshooting This section covers troubleshooting information for Preliminary Steps the Compaq Presario 1200 Series Portable Clearing the Power- Computers. The basic steps in troubleshooting On Password include: Power-On Self Test 1. Follow the Preliminary Steps.

  • Page 14: Preliminary Steps

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Preliminary Steps Before running POST, complete the following preliminary steps: 1.
  • Page 15 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Power-On Self Test (POST) Running POST To run POST, complete the following steps: Turn off the computer, then turn on the computer.

  • Page 16: Diagnostic Error Codes

    Index 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.

  • Page 17: Compaq Diagnostics

    Index 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.

  • Page 18: Contacting Compaq Support

    Troubleshooting Battery Operations Product Description Pin Assignments Index 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...

  • Page 19: Troubleshooting Without Diagnostics

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Troubleshooting Without Diagnostics This section provides information about how to identify and correct some common hardware, memory, and software problems.

  • Page 20: Solving Minor Problems

    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: Diskette drive cannot read a...

  • Page 21: Solving Pc Card Problems

    Card or card driver is not Contact your Compaq supported. authorized service provider for a list of PC Cards tested successfully in Compaq PC Card platforms. PC Card modem, fax, or Card is not fully inserted into Ensure the card is inserted network card does not work.
  • Page 22 2:50 hrs Disposal of a Used Battery Pack In the interest of safeguarding our environment. Compaq Computer Corporation recommends that nickel metal hydride (NiMH) and lithium ion (Li ion) battery packs be recycled. Battery packs should be handled in accordance with country, state, province, or local regulations.

  • Page 23: Connector Pin Assignments

    Battery Operations Product Description Pin Assignments Index Connector Pin Assignments This appendix provides connector pin assignment tables for Compaq Presario 1200 Series Portable Computers. For more information on connectors, refer to the section on Rear Connectors. NOTE: The signals in all tables of this appendix are considered active high unless otherwise indicated by an asterisk (*).

  • Page 24: Illustrated Parts Catalog

    Pin Assignments Index Illustrated Parts Catalog This section provides an breakdown and identifies the spare System Unit parts ordering number associated with each item(s) for the Boards Compaq Presario 1200 Series Portable Computers. Display Assembly Mass Storage Devices Miscellaneous Cable Kit...

  • Page 25: System Unit

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index System Unit System Unit Keyboard US 330956-001 Boards Display Assembly Mass Storage Devices Miscellaneous...
  • Page 26 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Boards System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous...

  • Page 27: Display Assembly

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Display Assembly System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables...

  • Page 28: Mass Storage Devices

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Mass Storage Devices System Unit Boards Display Assembly Mass Storage 4.0-GB Hard Drive w/Mounting Bracket 330969-001 Devices Miscellaneous...

  • Page 29: Miscellaneous Cables Kit

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Miscellaneous Cables Kit System Unit Boards Display Spare Part Number: 330946-001 Assembly Mass Storage Devices...
  • Page 30 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Cables System Unit Description Spare Part Number Boards Power Cord Display Assembly United States/French Canada...
  • Page 31 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Miscellaneous Hardware and Plastics Kits Miscellaneous Hardware System Unit Miscellaneous Plastics Kit Spare Part Number: 330949-001 Boards Spare Part Number:...

  • Page 32: Miscellaneous Parts

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Miscellaneous Parts System Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables...
  • Page 33 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Documentation and Software System Unit Description Spare Part Number Quick Restore CD, Belgium Windows 98 Info.

  • Page 34: Removal And Replacement Procedures

    Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Report the computer serial number to Compaq Touch Pad when requesting information or ordering spare Heatspreader parts. Keyboard Processor Hard Drives CD Drive Battery Charger Board...

  • Page 35: Electrostatic Discharge

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Electrostatic Discharge A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or microcircuitry.

  • Page 36: Service Considerations

    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.

  • Page 37: Cables And Connectors

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Cables and Connectors Most cables used throughout the unit are ribbon cables. Cables must be handled with extreme care to avoid damage.

  • Page 38: Zif Connectors

    Maintenance & Service Guide Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Pin Assignments Battery Pack Operations ZIF Connectors The computer uses a zero insertion force (ZIF) connector for the keyboard cable to the system board.
  • Page 39 Maintenance & Service Guide Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Pin Assignments Battery Pack Operations The ribbon cable position for the 3.2-GB, 4.0-GB, or 6.4- GB hard drive.
  • Page 40 Maintenance & Service Guide Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Pin Assignments Battery Pack Operations The ribbon cable position for the CD drive. Back to Cables and Connectors.
  • Page 41 Maintenance & Service Guide Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Pin Assignments Battery Pack Operations The ribbon cable position for the diskette drive. Back to Cables and Connectors.
  • Page 42 Maintenance & Service Guide Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Pin Assignments Battery Pack Operations The cable position for the speaker assembly. Cables and Connectors.

  • Page 43: Removing The Battery Pack

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Battery Pack To remove Disassembly the battery Sequence pack, Electrostatic complete the...
  • Page 44 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 2. Pull forward on the battery pack tab and remove the battery pack from the chassis.

  • Page 45: Removing The Palmrest Cover With Touch Pad

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Palmrest Cover with Touch Pad The palmrest Disassembly cover with touch Sequence pad must be...
  • Page 46 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 4. Turn the computer over (right side up), pull forward on the display latches to release and open the display assembly.

  • Page 47: Removing The Heatspreader

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Heatspreader To remove Disassembly heatspreader, Sequence complete the Electrostatic following Discharge...

  • Page 48: Removing The Keyboard

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Keyboard To remove Disassembly Sequence keyboard, Electrostatic complete the Discharge following steps:...
  • Page 49 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 5. Disconnect the flex cable from the ZIF connector on the system board.

  • Page 50: Removing The Processor

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Processor To remove Disassembly Sequence processor, Electrostatic complete the Discharge following steps:...
  • Page 51 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index To replace the processor complete the following steps: The notch on the left corner of the processor serves as an orientation indicator.
  • Page 52 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the 3.2-GB, 4.1-GB, and 6.4-GB Hard Drives To remove Disassembly the hard Sequence...
  • Page 53 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 5. Disconnect the hard drive data cable from the hard drive and remove from the chassis.
  • Page 54 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index To remove the hard drive mounting bracket, complete the following steps.

  • Page 55: Removing The Cd Drive

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the CD Drive To remove Disassembly the CD drive, Sequence complete the Electrostatic...
  • Page 56 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 6. Open the CD drive tray using a small paper clip.
  • Page 57 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 7. Disconnect the CD drive cable from the CD drive and remove the CD drive from the chassis.

  • Page 58: Removing The Battery Charger Board

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Battery Charger Board To remove the battery charger board, complete the following steps:...

  • Page 59: Removing The Modem

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Modem To remove Disassembly the modem, Sequence complete the Electrostatic following Discharge...
  • Page 60 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 6. Disconnect the modem cable from the modem. To replace the modem, reverse the previous procedures.

  • Page 61: Removing The Display Panel Assembly

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Display Panel Assembly To remove the Disassembly display panel Sequence assembly, complete Electrostatic...
  • Page 62 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 7. Disconnect the flex cable attached to the display panel assembly from the ZIF connector on the system board.
  • Page 63 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 8. Disconnect the backlight cable attached to the display panel assembly from the connector on the system board.
  • Page 64 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 9. Support the back of the display panel assembly and remove two screws from each of the display panel hinges.
  • Page 65 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 10. Gently pull the flex cable attached to the display panel assembly through the slot on the Upper CPU cover and remove the display...

  • Page 66: Removing The Upper Cpu Cover

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Upper CPU Cover To remove the Upper CPU cover complete the following steps:...

  • Page 67: Removing The Speaker Assembly

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Speaker Assembly To remove the speaker assembly, complete the following steps: Disassembly...

  • Page 68: Removing The Diskette Drive

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Diskette Drive To remove the diskette drive, complete the following steps: Prepare the Disassembly...
  • Page 69 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 8. Disconnect the diskette drive data cable from the system board.

  • Page 70: Removing The Fan Assembly

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Fan Assembly To remove the fan assembly, Disassembly complete the Sequence following...
  • Page 71 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index To remove the fan gasket, complete the following step: Pull the gasket from the fan.

  • Page 72: Removing The System Board

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the System Board Disassembly Sequence Electrostatic Discharge Service Considerations To remove the system board, complete the following steps: Cables and Connectors...
  • Page 73 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 15. Remove three standoffs from the system board. Next Step...
  • Page 74 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 16. Remove two screws from the CD Drive mounting rails and remove the mounting rails from the system board.
  • Page 75 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 17. Remove three screws from the system board. Next Step...
  • Page 76 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 18. Pull the PCMCIA eject lever out (straight), lift up the right side of the system board and pull forward to remove the system board from the chassis.
  • Page 77 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index CAUTION: When replacing the system board, ensure the dip switch voltage settings on the system board are correct for the computer model and processor voltage marked on the processor chip.

  • Page 78: Removing The Memory Module

    Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Removing the Memory Module To remove Disassembly the memory Sequence module, Electrostatic complete...
  • Page 79 Presario 1200 Series Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 Before You Begin Specifications Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index 4. Pull side levers to release the memory module and unplug the memory module from the system board.

  • Page 80: Specifications

    Parts Catalog Removal Sequence Troubleshooting Battery Operations Product Description Pin Assignments Index Specifications This chapter covers the following specifications of Compaq Presario 1200 Series Portable Computers: Computer models Physical and environmental System Interrupts System DMA System I/O Address System Memory Catalog...
  • Page 81 U.S. Metric Dimensions 1.97 in 4.95 cm Height 12.20 in 31.00 cm Depth 10.08 in 25.40 cm Width Weight 7.326 lb 3.33 kg Model 1234 7.326 lb 3.33 kg Model 1235 7.326 lb 3.33 kg Model 1236 7.326 lb 3.33 kg Model 1237 7.326 lb 3.33 kg...

  • Page 82: System Interrupts

    Nonoperating 1.5 G NOTE: Applicable product safety standards specify thermal limits for plastic surfaces. Compaq Presario 1200 Series Portable Computers operate well within this range of temperatures. System Interrupts System Interrupts Hardware IRQ System Function IRQ0 Timer Interrupt IRQ1 Standard 101/102-Key or Microsoft Natural...
  • Page 83 System DMA Hardware DMA System Function ES1869 Plug and Play AudioDrive ES1869 Plug and Play AudioDrive Standard Floppy Disk Controller (free) Direct memory access controller (free) (free) (free) System I/O Address System I/O Address I/O Address (Hex) System Function (Shipping Configuration) x0000 - x000F Direct Memory Access Controller...
  • Page 84 - x022F ES1869 Plug and Play AudioDrive x02F8 - x02FF Compaq Presario 56K-DF x0330 - x0331 ES1869 Plug and Play AudioDrive x0370 - x0371 Motherboard resources x0376 - x0376 Opti Viper Max Dual PCI IDE Controller x0376 - x0376...

  • Page 85: Memory Expansion

    Display (Information not available) 12.1" (Diagonal) TFT Display U.S. Metric Dimensions Information Information Height not available not available Width Display Dimensions Information Information Width not available not available Height Depth Weight Information Information not available not available Contrast Ratio Information Information not available not available...
  • Page 86 Memory Expansion System Memory Expansion Board Total Memory Memory 32-MB 16-MB 48-MB 32-MB 32-MB 64-MB 32-MB 64-MB 96-MB Diskette Drive (Information not available) Diskette Drive Capacity per Diskette (High/Low) Information not available Diskette Size Information not available Number of LED Indicators Information not available (Read/Write) Number of Drives Supported...
  • Page 87 Logical Configuration Information not available Information not available Cylinders Heads Sectors per track Bytes per sector Seek Times Information not available Information not available (Typical, Including settling in Single track Average Full stroke Transfer Rate Information not available Information not available At interface Hard Drives 5.0-GB...

  • Page 88: Battery Pack

    Access Time Information not available Average Random Access Time Spin Up time Information not available Data Buffer Capacity Information not available Battery Pack Battery Pack Nickel Metal Hydride (NiMH) Lithium Ion (Li ion) * Dimensions 0.8 in (20.3 mm) 0.8 in (20.3 mm) Height 5.7 in (145 mm) 5.7 in (145 mm)

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