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Compaq XL280 17. Remove five standoffs (shown below) from the system board.

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48 REMOVAL & REPLACEMENT PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES

Presario 1800/1800T Series

Models: XL280, XL380, XL381,

and XL390

17. Remove five standoffs (shown below) from the system board.

Note: The four remaining standoffs located on the system board may be left in place.

Continued on the next page.

Contents

Main Presario 1800/1800T Series Welcome to the Maintenance & Service Guide (MSG) Using this Guide Before You Begin Notice Preface Technician Notes Page PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES PRODUCT DESCRIPTION 1 Product Description Models and Features Presario 1800/1800T Series Front of Unit 1 Display Release Latch 6 2 Display 7 3 Power (On/Off) Button 8 4 Keyboard 9 5 TouchPad - Internet Zone Buttons and Lights Page Front Bezel Components Left-Side Components 1Security Slot 4CD or DVD Manual Eject Hole 2CD or DVD Drive 5Diskette Drive 3 Right-Side Components Underneath the Unit 1 Pop-Up Foot 3 2 Serial Number 4 Rear Connectors 1 Keyboard/Mouse Port 6 2 AC Adapter Connector 7 3 Parallel Po rt 8 4 QuikDock Connector 9 5 Optional QuikDock Specifications Physical and Environmental Presario 1800/1800T Series System Interrupts System DMA System I/O Addresses Page System Memory Catalog Memory Expansion Display Diskette Drive Hard Drive Battery Pack CD/CD-RW/DVD Drive Pin Assignments Parallel Connector TV-Out (Composite Video) Connector Universal Serial Bus (USB) Connector Keyboard/Mouse Connector Modem Connector External VGA Monitor Connector Game Port Connector Serial Connector QuikDock Connector Battery and Power Management Power Modes Page Power Settings Alarms SpeedStep Technology Rebooting After a Lockup Recovering From a Loss of Electrical Power Increasing Battery Pack Operating Time Conditioning a Battery Pack Disposing of a Used Battery Pack Troubleshooting Preliminary Steps Clearing the Power-On Password Power-On Self-Test (POST) Page Compaq Diagnostics Checkup (TEST) View System Information (INSPECT) Diagnostic Error Codes Page Page Page Page Page Page Page Page Troubleshooting without Diagnostics Page Page Page Page Page Page Page Page Memory Solutions Some causes and solutions for memory problems are listed in the following table. PC Card Solutions The following table lists some causes and solutions for PC card problems. Page Page Page Page Contacting Compaq Support Removal & Replacement Electrostatic Discharge Required Tools Screws Connectors & Plastic Parts Page Cables Page Page Page Page Page Preparing the Notebook for Disassembly Presario 1800/1800T Series Removal Procedures Page Page Page PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES REMOVAL & REPLACEMENT 15 6. Disconnect the flex cable from the ZIF Connector on the DisqPlay module. To replace the Palmrest cover with TouchPad, reverse these procedures. Page Page Page Page Page Page 6. Remove the two screws securing the Internet switch board and lift it from the chassis. To replace the Internet switch board, reverse these procedures. Page Page Page 26 R EMOVAL & REPLACEMENT PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 S allowed to experience any rough treatment. Handle the hard drive with extreme care. Page Page Page Page Page Page PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES REMOVAL & REPLACEMENT 33 To replace the CD, CD-RW, or DVD drive, reverse these procedures. Page PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 SERIES REMOVAL & REPLACEMENT 35 6. Remove the two outermost screws from the display assembly hinges. and damaging the display. 36 R EMOVAL & REPLACEMENT PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 S 7. Lift the display assembly off the hinges. To replace the display panel assembly, reverse these procedures. Page Page To remove the fan gasket, pull the gasket from the exterior of the fan. To replace the fan assembly and gasket, reverse these procedures. Page Page Page Page Page Page 46 R EMOVAL & REPLACEMENT PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1800 S To replace the speaker assembly, reverse these procedures. Page 17. Remove five standoffs (shown below) from the system board. Page 19. Remove four screws (shown below) from the system board. Page Page Page Parts Catalog Illustrated Parts Page Page Page Page Page Page Part Numbers & Availability