Preparing the Computer for Disassembly, Computer Feet | Compaq N150

Removal and Replacement Procedures

5.3Preparing the Computer for Disassembly

Perform the following steps before disassembling the computer. Consult the computer Hardware Guide for instructions on the following steps:

1.Turn off the computer.

2.Disconnect the AC Adapter and all external devices.

3.Remove the battery pack.

4.Remove the hard drive.

5.Remove the Media Bay device.

5.4Computer Feet

The computer feet are adhesive-backed rubber pads. The computer feet are included in the Miscellaneous Plastics Kit (spare part number 239039-001). Refer to Figure 5-2 for the computer feet locations.

Figure 5-2. Replacing the Computer Feet

5–4	Maintenance and Service Guide

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Compaq N150 manual Preparing the Computer for Disassembly, Computer Feet

Contents

Maintenance and Service Guide Page Contents Illustrated Parts Catalog Screw Listing Index Models and Features Product Description Key ModelsKey Description Options T4X Taiwan Features Serial Power Management Front and Left Side Panel Components External Computer ComponentsComponent Function Front and Left Side Panel Components Right Side and Rear Panel Components Right Side and Rear Panel Components Right Side and Rear Panel Components Keyboard components are shown in -4 and described in Table Keyboard Components Fn key Top Components Top Components Top Components Bottom Components Bottom Components Bottom Components Design Overview Troubleshooting Using the PhoenixBIOS Setup Utility Troubleshooting Flowcharts Overview Troubleshooting FlowchartsSection Description Initial Troubleshooting No Power, Part From Section No Power, Part Power outlet From Section No Power, Part Open Computer No Video, Part From Section No Video, Part Remove Reseat power Cord in docking Station Power outlet Non Functioning Docking Station if applicable No Operating System OS Loading No OS Loading from Hard Drive, Part From Section System Files on hard Drive? Install OS Reboot No OS Loading from Diskette Drive No OS Loading from CD- or DVD-ROM Drive No Audio, Part Undock From Section No Audio, Part Non Functioning Device Non Functioning Keyboard Non Functioning Pointing Device Network or Modem Connection Illustrated Parts Catalog Serial Number Location Computer System Major Components Computer System Major Components Computer System Major Components Computer System Major Components Description Number Speakers PC Card assemblyDisk cell RTC battery Heat sink Computer System Major Components Media Bay devices Battery packsItem Description Number Mini PCI Communications Boards Base enclosure Miscellaneous Plastics Kit Components Spare Part Number Miscellaneous Plastics Kit ComponentsItem Description Miscellaneous Hardware Kit Components Miscellaneous Hardware Kit Components Spare Part Number Cable Kit Components Cable Kit Components Spare Part Number Description Number Diskette drive 239035-001 Hard drives Mass Storage DevicesMass Storage Devices Optical drives Miscellaneous Miscellaneous Spare Parts not illustrated 50W slim AC adapter Power cord, black, 6 feetDescription Number External AC adapter Logo kit Service Considerations Tools Required Preventing Damage to Removable Drives Cables and ConnectorsPlastic Parts Maintenance and Service Guide Packaging and Transporting Precautions Preventing Electrostatic Damage Workstation Precautions Grounding Equipment and Methods Relative Humidity Event 10% 40% 55% Typical Electrostatic Voltage LevelsStatic-Shielding Materials Material Use Voltage Protection Level Removal and Replacement Procedures Serial Number # of Screws Disassembly Sequence ChartDisassembly Sequence Chart Section Description Removed Preparing the Computer for Disassembly Computer Feet Hinge Covers Removing the Hinge Covers Keyboard Keyboard Cover Spare Part Number Information Remove the two pewter M2.5 × 7.0 screws that secure Display Display Spare Part Number Information Reverse the above procedure to install the display EMI Shield Removing the EMI Shield Top Cover Top Cover Spare Part Number Information Removing the Top Cover Screws Disconnecting Top Cover Connectors 10. Removing the Top Cover TouchPad TouchPad Spare Part Number Information 11. Removing the TouchPad Screws Remove the TouchPad bracket and TouchPad from the top cover Speakers Speakers Spare Part Number Information 13. Routing the Speaker Cables 14. Removing the Speakers Microphone Reverse the above procedure to install the microphone Display Lid Switch Board 16. Removing the Display Lid Switch Board Heat Sink Heat Sink Reverse the above procedure to install the heat sink Infrared Board Infrared Board Spare Part Number Information Board to the base enclosure System Board System Board Spare Part Number Information 19. Removing the System Board Screwlocks 20. Removing the System Board Screws 21.Lifting the System Board Reverse the above procedure to install the system board PC Card Assembly PC Card Assembly Spare Part Number Information Reverse the above procedure to install the PC Card assembly Mini PCI Board Mini PCI Board Spare Part Number Information Reverse the above procedure to install the mini PCI board Disk Cell RTC Battery Disk Cell RTC Battery Spare Part Number Information 25. Removing the Disk Cell RTC Battery AC Adapter Power Requirements DimensionsStandalone Battery Power Requirements Temperature Shock Relative Humidity non condensingVibration Inch XGA, TFT Display 15 GB 10 GB User capacity per drive1 Logical configurationHard Drives Interface type Disk rotational speed 15 GB 10 GB Physical configurationBuffer size3 Transfer rate Diskette Drive CD-ROM Drive Disk thickness Track pitch DVD-ROM DriveAudio output level Weight Power supply input AC Adapter Energy Battery PacksEnvironmental requirements System DMA Hardware DMA System Function System Interrupts Hardware IRQ System Function System I/O Addresses 16F Unused VGA System Memory Map Size Memory Address System Function Table A-1 Stereo Speaker/Headphone Pin Signal Audio out GroundPin Signal Audio Ground Table A-2 Microphone Table A-3 External Keyboard/Mouse Pin SignalTable A-4 RJ-11 Modem Table A-5 RJ-45 Network Interface Table A-6 Universal Serial Bus Table A-7 Serial Table A-8 External Monitor Table A-9 Parallel Conductor Power Cord Set General Requirements Country-Specific Requirements Conductor Power Cord Set Requirements-By CountryCountry Accredited Agency Applicable Note Number Maintenance and Service Guide Screw Listing Head Table C-1 M2.5 × 7.0 ScrewColor Qty Length Thread Width Pewter M2.5 Table C-1 M2.5 × 7.0 Screw Table C-1 M2.5 × 7.0 Screw Head Color Qty Length Thread Width Table C-2 M2.5 × 8.0 Screw Color Qty Length Thread Width Silver M2.5 Table C-3 M2 × 5.5 Screw Color Qty Length Thread Width Silver Color Qty Length Thread Width Black M2.5 Where used Table C-4 M2.5 × 4.5 Screw Table C-4 M2.5 × 4.5 Screw Table C-4 M2.5 × 4.5 Screw Table C-4 M2.5 × 4.5 Screw Table C-5 M2 × Table C-6 M2.5 × 4.0 Screw Head Table C-7 M2.5 × 3.0 Screw Table C-8 M2 × 6.0 Screw Color Qty Length Thread Width Silver Where used Table C-9 M1 × 4.0 Screw Table C-10 M2 × 4.0 Screw Table C-10 M2 × 4.0 Screw Table C-11 M2 × 14.5 Screw Table C-12 M2 × 5.0 Screw Table C-13 Mm Screwlock Head Color Qty Length Socket Width Index Index-2 Index-3 Spare part number Index-5 Troubleshooting