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HP D3K19UT D3K19UT#ABA Front I/O, Power Switch Assembly, Remove the front bezel Front Bezel on

Models: D8C84UT#ABA D3K21UT#ABA D3K19UT D3K19UT#ABA Pro 4300 C9H69UT#ABA Pro 4300 B8T87UT B8T87UT#ABA Pro 4300 B5P90UT#ABA Pro 4300 C9H67UT#ABA

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Page 79

Front I/O, Power Switch Assembly

Description	Spare part number

Front I/O and power switch assembly	636926-001

The front I/O and power switch/LEDs are one assembly, attached to the front of the chassis. Push the assembly into the chassis to remove.

1.Prepare the computer for disassembly (Preparation for Disassembly on page 37).

2.Remove the access panel (Computer Access Panel on page 39).

3.Remove the front bezel (Front Bezel on page 40).

4.Remove the chassis fan (Front Fan Assembly on page 70).

5.Rotate the drive cage to its upright position.

6.Disconnect the four cables from the system board as follows:

●Yellow connector labeled FRONT USB1

●Green connector labeled FRONT USB2

●Blue connector labeled FRONT AUD

●Black connector labeled PB/LED

7.Remove the screw that secures the assembly to the front of the chassis. Figure 7-44Removing the front I/O, power switch/LED assembly screw

Front I/O, Power Switch Assembly 71

Image 79

HP D3K19UT D3K19UT#ABA, D8C84UT#ABA, D3K21UT#ABA Front I/O, Power Switch Assembly, Remove the front bezel Front Bezel on

Contents

Maintenance and Service Guide HP Compaq Pro 4300 Small Form Factor Business PC Iii About This Book Iv About This Book Table of contents Illustrated parts catalog Safety and Comfort Vii 108 Choosing recovery media 146 Creating recovery media103 105 Standard Configuration Features Product Features Front Panel Components Product Features1Front Panel Components 2Rear Panel Components Rear Panel Components Serial Number Location 4Serial Number and Product ID Location Product Features Installing the Windows Operating System Installing and Customizing the SoftwareDownloading Microsoft Windows Updates Customizing the Monitor Display Windows systems Installing or Upgrading Device Drivers Windows systemsLaunching Windows XP from Windows Accessing Disk Image ISO Files Computer Setup F10 Utilities Computer Setup F10 Utility Using Computer Setup F10 Utilities Computer Setup F10 Utility Computer Setup-File1Computer Setup-File 2Computer Setup-Storage Computer Setup-Storage 3Computer Setup-Security Computer Setup-Security System Security System IDs Management Computer Setup-Power4Computer Setup-Power Option Description Hardware Power Bios Power-On Computer Setup-Advanced5Computer Setup-Advanced Option Heading Power-On Options Device Options Bus Options Sata Hard Drive Cables Serial ATA Sata Drive Guidelines and FeaturesSerial ATA Hard Drive Characteristics Sata Hard Drives Smart ATA Drives Serial ATA Sata Drive Guidelines and FeaturesHard Drive Capacities Small Form Factor SFF Chassis Designations Relative Humidity Event 55% 40% 10% Electrostatic Discharge InformationGenerating Static Preventing Electrostatic Damage to Equipment Static Shielding Protection Levels Personal Grounding Methods and EquipmentGrounding the Work Area Recommended Materials and Equipment Operating Guidelines Routine Care General Cleaning Safety PrecautionsCleaning the Computer Case Cleaning the Keyboard Power Supply Fan Service ConsiderationsCleaning the Monitor Cleaning the Mouse Hard Drives Cables and ConnectorsTools and Software Requirements Screws Lithium Coin Cell Battery This chapter provides parts information for the chassis Illustrated parts catalogSpare parts Computer major components Illustrated parts catalog Expansion cards Description Spare part number Optical drivesKeyboard Sequential part number listing Spare parts Illustrated parts catalog Spare parts Illustrated parts catalog Spare parts Illustrated parts catalog 1Serial Number and Product ID Location Preparation for DisassemblyPage Description Spare part number Access panel 636924-001 Computer Access Panel Description Spare part number Front bezel 695080-001 Front Bezel 4Removing a Bezel Blank Replace the front bezel Bezel Blanks Bezel Blanks System Board Connections System Board Connector System Board Label Color Component1System Board Connections DIMMs Installing Additional MemoryDDR3-SDRAM DIMMs Populating Dimm Sockets Installing DIMMsPage Removing or Installing an Expansion Card Remove the access panel Computer Access Panel on Page Page Page Page Page Cable Management Drive cables Drives Drive Positions Installing and Removing Drives2Drive Positions Mounting Screw Device 3Extra Mounting Screws Removing an Internal 5.25-inch Drive Rotate the drive cage back down to its normal position Installing an Optical Drive into the 5.25-inch Drive Bay Page Removing an Internal 3.5-inch Drive Page Installing a Drive into the 3.5-inch Internal Drive Bay Page Page Remove the access panel Computer Access Panel on 39Installing Hard Drive Mounting Screws Drives Page Description Spare part number Baffle 636921-001 Baffle Description Spare part number Front fan assembly 636922-001 Front Fan Assembly Remove the front bezel Front Bezel on Front I/O, Power Switch Assembly Description Spare part number Speaker 636925-001 Speaker Description Spare part number Heat sink 636919-001 Heat sinkPage Page Processor Page Pwrcmd Power Supply Power supply connector label System board connector 4Power supply cable system board connector System Board Page Battery Type 2 Battery Holder Type 1 Battery HolderLift the battery out of its holder Type 3 Battery Holder Using the Small Form Factor Computer in a Tower Orientation HP/Kensington MicroSaver Security Cable Lock Installing a Security Lock Padlock 57Installing a Padlock Installing a Security Lock Front Bezel Security Page Japanese Power Cord Requirements Power Cord Set RequirementsGeneral Requirements Country Accrediting Agency Country-Specific Requirements Post Error Messages Control panel message Description Recommended action Post Numeric Codes and Text MessagesPost Numeric Codes and Text Messages Table B-1Numeric Codes and Text Messages Activity Blinks Possible Cause Table B-2Diagnostic Front Panel LEDs and Audible Codes Activity Blinks Possible Cause Recommended Action Safety and Comfort Before You Call for Technical Support Troubleshooting Without Diagnostics Helpful Hints Page Computer date and time display is incorrect Cause Solution Solving General ProblemsSolving General Problems Table C-1Solving General Problems Cannot remove computer cover or access panel Cause There is no sound or sound volume is too low Cause SolutionPoor performance is experienced Cause Solution Cause Solution Run Windows XP, Start Accessories Run Appendix C Troubleshooting Without Diagnostics Power supply shuts down intermittently Cause Solution Solving Power ProblemsSolving Power Problems Table C-2Solving Power Problems Usdt power supply adapter must be at 135W and use Solving Hard Drive Problems Solving Hard Drive ProblemsTable C-3Solving Hard Drive Problems Computer will not boot from hard drive Cause Solution Nonsystem disk/NTLDR missing message Cause SolutionStorage Boot Order Removable hard drive is not recognized by the computer Cause Computer seems to be locked up Cause Table C-4Solving Media Card Reader Problems Solving Media Card Reader ProblemsCan not write to the media card Cause Solving Media Card Reader Problems Personalization, select Adjust screen Solving Display ProblemsTable C-5Solving Display Problems Blank screen no video Cause Solution Solving Display Problems Select ImageControl/ Horizontal Position or Vertical Dim characters Cause SolutionImage is not centered Cause Solution No Connection, Check Signal Cable displays on screen Cause Clicking noise coming from inside a CRT monitor Cause Out of Range displays on screen Cause Symbol. Click Start All Programs Accessories Certain typed symbols do not appear correct Cause Solution Solving Audio Problems Solving Audio ProblemsTable C-6Solving Audio Problems Advanced Device Options Internal Speaker Sound from headphones is not clear or muffled CauseLine-in jack is not functioning properly Cause Solving Printer Problems Solving Printer ProblemsTable C-7Solving Printer Problems Printer is offline Cause Solution Printer prints garbled information Cause Solution Table C-9Solving Mouse Problems Solving Keyboard and Mouse ProblemsSolving Keyboard and Mouse Problems Table C-8Solving Keyboard Problems Appendix C Troubleshooting Without Diagnostics Computer will not start Cause Solution Solving Hardware Installation ProblemsSolving Hardware Installation Problems Table C-10Solving Hardware Installation Problems Appendix C Troubleshooting Without Diagnostics Solving Network Problems Solving Network ProblemsTable C-11Solving Network Problems Diagnostics reports a failure Cause Solution Network status link light never flashes Cause Solution New network card will not boot Cause Solution Memory count during Post is wrong Cause Solution Solving Memory ProblemsTable C-12Solving Memory Problems Out of memory error Cause Solution Insufficient memory error during operation Cause Solution Solving Memory Problems Make sure the processor heat sink is installed properly Solving Processor ProblemsTable C-13Solving Processor Problems Some fans only operate when needed Mode in Security Password Options Solving CD-ROM and DVD ProblemsSolving CD-ROM and DVD Problems Table C-14Solving CD-ROM and DVD Problems Cannot eject compact disc tray-load unit Cause Movie will not play in the DVD drive Cause Solution Solving USB Flash Drive Problems Solving USB Flash Drive ProblemsTable C-15Solving USB Flash Drive Problems Table C-16Solving Front Panel Component Problems Solving Front Panel Component Problems Solving Internet Access Problems Solving Internet Access ProblemsTable C-17Solving Internet Access Problems Cannot automatically launch Internet programs Cause Double-clickAgere Systems PCI-SV92PP Soft Click on System and MaintenanceModem Table C-18Solving Software Problems Solving Software Problems Cmos Password Security and Resetting Resetting the Password Jumper Figure D-1 Cmos button Clearing and Resetting the CmosPage Drive Protection System DPS Select Storage DPS Self-Test Accessing DPS Through Computer Setup System Recovery Appendix F System Recovery System Recovery optionsSystem Recovery from the Windows 7 Start Menu System Recovery at system startup System Recovery from recovery media To create recovery discs Close all open programs Recovery mediaChoosing recovery media Creating recovery mediaPage Appendix G Specifications SpecificationsTable G-1Specifications 149 Cmos Index DVI-D VGA Sata Connectors on system board