Hood Sensor | HP Pro QV985AV instruction

Hood Sensor

Description	Spare part number

Hood sensor	638816-001

The hood sensor is attached in a slot in the rear of the chassis.

1.Prepare the computer for disassembly (Preparation for Disassembly on page 94).

2.Remove the access panel (Access Panel on page 95).

3.Unplug the sensor cable from the system board connector labeled HSENSE (1).

4.Slide the hood sensor straight out of the notch in the chassis (2).

NOTE: A flat blade screwdriver can be used to push the hood sensor out of the slot.

Figure 7-30Removing the hood sensor from the chassis fan

To install the hood sensor, reverse the removal procedure.

122 Chapter 7 Removal and Replacement Procedures Small Form Factor (SFF) Chassis

Image 131

HP Pro QV985AV manual Hood Sensor, Description Spare part number Hood sensor 638816-001

Contents

HP Compaq Business PC Maintenance and Service Guide Page About This Book Table of contents Page Removal and Replacement Procedures Microtower MT Chassis 136 204 217 Standard Configuration Features Product Features 1Front Panel Components Microtower MT Front Panel Components 2Front Panel Components Small Form Factor SFF Front Panel Components 3Rear Panel Components Microtower MT Rear Panel Components 5Rear Panel Components Small Form Factor SFF Rear Panel Components 6Microtower Serial Number and Product ID Location Serial Number Location Activating the Windows operating system Activating and Customizing the SoftwareActivating and customizing the software in Windows Customizing the monitor display Downloading Windows 7 updatesInstalling or upgrading device drivers Click Settings Change PC Settings Downloading Windows 8 updates Computer Setup F10 Utilities Computer Setup F10 Utility 1Computer Setup F10 Utility Using Computer Setup F10 Utilities 2Computer Setup-File Computer Setup-File OptionDescription Computer Setup-Storage3Computer Setup-Storage Sata Defaults Max eSATA Speed Removable Media BootStorage Options ESATA Port Sata Emulation DPS Self-Test Boot OrderShortcut to Temporarily Override Boot Order 4Computer Setup-Security Computer Setup-Security Slot Security Network BootDevice Security USB Security Security System Security DriveLock Security Secure BootConfiguration 5Computer Setup-Power Computer Setup-Power Option Heading Power-On Options Computer Setup-Advanced6Computer Setup-Advanced for advanced users Device Options Bios Power-OnOnboard Devices Bus Options AMT Configuration Recovering the Configuration SettingsVGA Configuration Computer major components Illustrated parts catalogMicrotower MT chassis spare parts Intel Core i5 processors Access panelPower supply Intel Core i7 processor Intel Celeron processors CablesDescription Spare part number Misc parts Description Spare part number Rear chassis fan Fan duct assemblyUSB powered speakers not illustrated ESATA port assembly, PCI card not illustrated Optical drive DrivesMisc boards Description Spare part number Hard drive Spare part Description Number Sequential part number listing Illustrated parts catalog Microtower MT chassis spare parts Illustrated parts catalog Description Spare part number Front bezel Small Form Factor SFF chassis spare parts Description Spare part number Cables Misc parts Drive adapter not illustrated Drives Sequential part number listing Illustrated parts catalog Small Form Factor SFF chassis spare parts Illustrated parts catalog Relative Humidity Event 55% 40% 10% Electrostatic Discharge InformationGenerating Static Method Voltage Preventing Electrostatic Damage to EquipmentPersonal Grounding Methods and Equipment Static Shielding Protection Levels Recommended Materials and Equipment Grounding the Work Area Routine Care General Cleaning Safety PrecautionsCleaning the Computer Case Operating Guidelines Cleaning the Monitor Cleaning the Keyboard Tools and Software Requirements Service ConsiderationsCleaning the Mouse Power Supply Fan Hard Drives Cables and ConnectorsLithium Coin Cell Battery Cable Management Sata Hard DrivesSata Hard Drive Cables Smart ATA DrivesPage Preparation for Disassembly Removal and Replacement Procedures Microtower MT Chassis Description Spare part number Access panel 646825-001 Computer Access Panel Front Bezel Remove the access panel Computer Access Panel on Front Bezel Security Page 5Removing a Bezel Blank Bezel Blanks Bezel Blanks Populating Dimm Sockets MemoryDIMMs DDR3-SDRAM DIMMs Installing DIMMs Page Expansion Cards Page Page Page 1System Board Connections System Board Connector System Board Label Color ComponentSystem Board Connections Drives Guide Screw Device Media 2Drive Positions Drive Positions Removing a 5.25-inch or 3.5-inch Drive from a Drive Bay 16Removing the Drives Installing a 5.25-inch or 3.5-inch Drive into a Drive BayPage Page Removing a Hard Drive from a Drive Bay Installing a Hard Drive into an Internal Drive BayPage Page Page Description Spare part number Front fan assembly 585884-001 Front Fan AssemblyPage Description Spare part number Front I/O assembly 646827-001 Front I/O Assembly Power Switch/LED Assembly Description Spare part number Heat sink 645326-001 Heat sinkPage Description Spare part number Intel Core i7 processor ProcessorPage Page Description Spare part number Speaker 645330-001 Speaker Description Spare part number Rear chassis fan 636922-001 Rear Chassis FanPage Power Supply Page System Board Preparation for Disassembly Description Spare part number Access panel 646815-001 Access Panel Description Spare part number Front bezel 687950-001 Front Bezel Security Page 5Removing a bezel blank Replace the front bezel Bezel Blanks Memory Installing DIMMs Page Expansion Card Page Page Page Black Unused Power X4PCIEXP 13Drive Positions Installing and Removing Drives Removing a 5.25-inch Drive from a Drive Bay Installing a 5.25-inch Drive into a Drive Bay Page Page Removing a 3.5-inch Drive from a Drive Bay Installing a 3.5-inch Drive into a Drive Bay Page 24Removing the Hard Drive Drives Page Description Spare part number Fan duct 636921-001 Fan duct Description Spare part number Front fan 645327-001 Page Description Spare part number Hood sensor 638816-001 Hood Sensor Remove the chassis fan Front Fan Assembly on Front I/O, Power Switch AssemblyPage Description Spare part number Speaker 636925-001 Heat sink Page Processor Page Page Power Supply Page System Board Page Using the Small Form Factor Computer in a Tower Orientation Safety and Comfort Before You Call for Technical Support Troubleshooting Without Diagnostics Refer to Helpful Hints on page 137 in this guide Helpful HintsPage Computer will not respond to keyboard or mouse Cause Solving General Problems1Solving General Problems Computer date and time display is incorrect Cause Solution Advanced Device Options There is no sound or sound volume is too low Cause SolutionCannot remove computer cover or access panel Cause Poor performance Cause Solution Under Windows System, click Run All apps icon Cause Solution Power supply shuts down intermittently Cause Solution Solving Power Problems2Solving Power Problems Some models, is set to the appropriate voltage. Proper 3Solving Hard Drive Problems Solving Hard Drive Problems Device Configuration Nonsystem disk/NTLDR missing message Cause SolutionComputer will not boot from hard drive Cause Solution Storage Boot Order Computer seems to be locked up Cause Solution Can not write to the media card Cause Solving Media Card Reader Problems4Solving Media Card Reader Problems Computer’s software is used to safely eject the card Adjust screen resolution Solving Display Problems5Solving Display Problems Blank screen no video Cause Solution Dim characters Cause Solution Select ImageControl/ Horizontal Position or Vertical Image is not centered Cause SolutionNo Connection, Check Signal Cable displays on screen Cause Out of Range displays on screen Cause Certain typed symbols do not appear correct Cause 6Solving Audio Problems Solving Audio Problems Line-in jack is not functioning properly Cause Sound from headphones is not clear or muffled CauseThere is no sound or sound volume is too low Cause Printer will not turn on Cause Solution Solving Printer Problems7Solving Printer Problems Printer will not print Cause Solution Printer prints garbled information Cause Solution 8Solving Keyboard Problems Solving Keyboard and Mouse Problems Enter 9Solving Mouse Problems Security USB Security Solving Hardware Installation Problems10Solving Hardware Installation Problems Control Panel , and then select Device Manager Computer will not start Cause Solution 11Solving Network Problems Solving Network Problems Manager Network status link light never flashes Cause Solution Diagnostics reports a failure Cause Solving Memory Problems Insufficient memory error during operation Cause Solution 12Solving Memory ProblemsOut of memory error Cause Solution Memory count during Post is wrong Cause Solution 14Solving CD-ROM and DVD Problems Solving Processor ProblemsSolving CD-ROM and DVD Problems 13Solving Processor Problems Movie will not play in the DVD drive Cause Solution Security Network Boot Cannot eject compact disc tray-load unit Cause Solving USB Flash Drive Problems System will not boot from USB flash drive Cause Solution 15Solving USB Flash Drive ProblemsUSB flash drive not found identified Cause Solution Unable to connect to the Internet Cause Solution Solving Front Panel Component ProblemsSolving Internet Access Problems Ports are set to Enabled in Security USB Security Click Internet Options Select Start Control Panel Solving Software Problems Solving Software Problems Contacting Customer Support Post Error Messages 1Numeric Codes and Text Messages Post Numeric Codes and Text Messages Post Numeric Codes and Text Messages Verify monitor is attached and turned Replace diskette drive Security Drivelock Security. For each Test under Storage DPS Self-testOptions Sata Emulation to IDE, Select File Save Changes and Exit Post Numeric Codes and Text Messages Bios ME firmware upgrading. a failure has 2Diagnostic Front Panel LEDs and Audible Codes Activity Beeps Possible Cause Recommended Action Desktop Management Guide for more 2Diagnostic Front Panel LEDs and Audible Codes Cmos Password Security and Resetting Resetting the Password Jumper Clearing and Resetting the Cmos Cmos button How to access and run HP PC Hardware Diagnostics HP PC Hardware DiagnosticsWhy run HP PC Hardware Diagnostics Uefi Downloading HP PC Hardware Diagnostics to a USB device System Recovery Backup and RecoveryRestoring and recovering in Windows System Restore System Recovery when Windows is responding System Recovery when Windows is not responding Creating recovery media Using recovery media Backing up your information Backup and recovery in Windows Using the Windows recovery tools Performing a system recovery Using f11 recovery tools Battery Replacement Type Page Removing and Replacing a Removable 3.5-inch Sata Hard Drive Page Figure B-5Replacing the Hard Drive 209 Page Page Smart Cover FailSafe Key Unlocking the Smart Cover LockPage Page General Requirements Power Cord Set RequirementsJapanese Power Cord Requirements Country Accrediting Agency Country-Specific Requirements Table E-1Specifications SpecificationsMT Specifications High Efficiency Standard Efficiency Rated Input Current SFF SpecificationsTable E-2Specifications Index Symbols/Numerics SFF Page Sata SFF