Hood sensor | HP 280 G1 guide

Hood sensor

1.Prepare the computer for disassembly (Preparation for disassembly on page 21).

2.Remove the access panel (Access panel on page 22).

3.From the inside of the chassis, if the hood sensor cable is secured to the fan cable with a plastic tie (1), cut the tie to separate the cables.

4.Disconnect the hood sensor cable from the red system board connector labeled HOOD_SENSE(2).

5.Slide the hood sensor out of the slot in the rear of the chassis (3).

NOTE: Disengaging the hood sensor from the slot might require use of a flat tool.

To install the hood sensor, reverse the removal procedure.

46 Chapter 5 Removal and replacement procedures

Image 54

HP 280 G1 manual Hood sensor

Contents

Maintenance and Service Guide Product notice Safety warning notice Iii Iv Safety warning notice Table of contents Sata data cable System board callouts 104 100103 105 124 120121 Viii Product description Product description Serviceability End user replaceable parts SoftPaq Product Features Standard Configuration Features Front panel components Front panel componentsMm Microphone Jack Power cord connector Rear panel components Rear panel components Serial Number Location Illustrated parts catalog Computer major componentsComputer major components Illustrated parts catalog Access panelFront I/O assembly Item Description Front bezel Misc parts Wlan 802.11 a/b/g/n + Bluetooth 4.0 moduleMisc parts Graphics card, GeForce GT705 PCIe x16, 1 GB Mouse DrivesItem Description Description Hard drives/Solid-state drives Electrostatic discharge information Electrostatic discharge informationGenerating static Relative Humidity Event 55% 40% 10% Grounding the work area Preventing electrostatic damage to equipmentPersonal grounding methods and equipment Static Shielding Protection Levels Operating guidelines Recommended materials and equipment Cleaning the keyboard General cleaning safety precautionsCleaning the Computer Case Routine care Cleaning the mouse Service considerationsCleaning the monitor Power supply fan Screws Cables and connectorsLithium coin cell battery Hard Drives Sata hard drive cables Serial ATA Hard Drive CharacteristicsSata hard drives Smart ATA drives Cable management Removal and replacement procedures Preparation for disassembly Access panel Front bezel Optical drive bezel blank DDR3/DDR3L-SDRAM UDIMMs MemoryDIMMs Populating Dimm sockets Installing DIMMs Expansion cards Removal and replacement procedures Page Drives Drive positions Removing an optical drive Removing a hard drive Front I/O and power switch assembly Page Removal and replacement procedures Card reader Removal and replacement procedures Heat sink Processor Speaker Page Page Rear chassis fan Page Hood sensor Power supply Page System board System board callouts Sys Bd Label Color Component Computer Setup F10 Utility Computer Setup F10 Utilities Using Computer Setup F10 Utilities Computer Setup-File Computer Setup-Storage Computer Setup F10 Utility Computer Setup-Security Device Security Network BootMaster Boot Security USB Security Legacy Support to disabled Secure BootConfiguration System Security these Option Description Computer Setup-PowerHardware Power Management Bios Power-On Computer Setup-AdvancedPower-On Options Option Connected Bios PCI VGA ConfigurationUsing the Dash Terminal Type option Bus Options Recovering the Configuration Settings Troubleshooting without diagnostics Safety and comfort Before you call for technical support Helpful hints Solving general problems Computer will not respond to keyboard or mouse Cause Solving general problems Poor performance Cause Solution Apps iconUnder Windows System, click Run Processor thermal protection activated Solving power problems Power supply shuts down intermittently Cause Solution Solving hard drive problems Solving hard drive problems Computer will not boot from hard drive Cause Solution Nonsystem disk/NTLDR missing message Cause SolutionStorage Boot Order list Storage Boot Order Solving media card reader problems Solving media card reader problemsCan not write to the media card Cause Blank screen no video Cause Solution Solving display problemsInserted media card has boot capability To the electrical outlet Solving display problems Blank screen no video Cause Be sure the monitor cable is securely connected to Dim characters Cause SolutionInstall the video drivers included in the upgrade kit Monitor needs to be degaussed No Connection, Check Signal Cable displays on screen Cause Image is not centered Cause SolutionPosition may need adjustment Horizontal or vertical position of the image Solving audio problems Certain typed symbols do not appear correct CauseSound cuts in and out Cause Solution Solving audio problems Line-in jack is not functioning properly Cause Solving printer problemsPrinter will not print Cause Solution Control Panel , and then select Device Manager Printer prints garbled information Cause Solution Solving keyboard and mouse problemsSolving keyboard and mouse problems Make the proper network connections to the printer Shut down the computer using the keyboard Keyboard connector is not properly connectedProgram in use has stopped responding to commands Computer, and then restart the computer That pins in the connector are not bent down Solving Hardware Installation ProblemsSolving Hardware Installation Problems Mouse may need repair Computer will not start Cause Solution Solving Network Problems Solving Network Problems Network status link light never flashes Cause Solution Settings for the board Correct operating modeDiagnostics reports a failure Cause Solution Cable Correctly Solving memory problems New network card will not boot Cause Solution Memory count during Post is wrong Cause Solution Solving memory problemsOut of memory error Cause Insufficient memory error during operation Cause Solution Solving CD-ROM and DVD problems Computer Setup utilitySecurity Network Boot Solving CD-ROM and DVD problems Movie will not play in the DVD drive Cause SolutionCannot eject compact disc tray-load unit Cause System will not boot from USB flash drive Cause Solution Solving USB flash drive problemsUSB flash drive not found identified Cause Solution Security USB Security Solving front panel component problems Solving Internet access problemsSolving front panel component problems Log on to your ISP and launch the desired program Solving software problemsDelete button System files may be damaged Solving software problems Advanced startup, click Restart nowSelect Automatic Repair Post numeric codes and text messages Post error messagesPost error messages Control panel message Description Recommended action Download to Disable to prevent PXE Post numeric codes and text messages Ensure that none of the keys are Flash Screen Image Corrupted Flash Screen image has errorsECC Memory Module Detected ECC Depressed Reconfigure card resources and/or run Power Supply fan not detectedReseat power supply fan Computer Setup or Windows utilities Functionality contained in the system Bios Sata Cabling Error One or more Sata devices are improperlyReboot the computer System Bios version Attached Enabled Turned off Activity Beeps Possible cause Recommended action Red Power LED flashes seven Faulty modulePre-video graphics error For systems with a graphics card Times, once every second Unable to boot Replace the power button harness. If Open hood and check that the power buttonCheck that both power supply cables are Problem persists, replace the system board Password security and resetting Cmos Resetting the Cmos and password jumper Changing a Setup or Power-On password Deleting a Setup or Power-On password Press Enter Deleting a Setup or Power-On password HP PC Hardware Diagnostics Why run HP PC Hardware DiagnosticsHow to access and run HP PC Hardware Diagnostics Diagnostic section, click HP Uefi Support Environment System backup and recovery Creating recovery media and backupsRestoring and recovering using Windows tools Using Reset when the system is not responding Select Reset Follow the on-screen instructions to continue Backing up, restoring, and recovering in Windows Creating recovery media Click All Programs To create recovery discs Close all open programs To create the Windows DVD System backup and recovery System Restore Follow the on-screen instructions to set up your backup System Recovery System Recovery when Windows is responding System Recovery when Windows is not responding Select Install now Page Battery replacement Page Power Cord Set Requirements Japanese Power Cord RequirementsGeneral Requirements Country-Specific Requirements Country-Specific RequirementsCountry Accrediting Agency Statement of Volatility Appendix C Statement of Volatility Enter the F10 setup utility Specifications SpecificationsAppendix D Specifications Recycling 125 Index Keyboard Cleaning Product description Keyboard problems Memory moduleIllustrated Product description Audio Chipset Ethernet Flash drive 112 System Recovery 114 108 Safety and comfort Safety precautions CleaningSystem restore points, creating Processor Rear chassis fan Speaker