HP Pro 3420 Page 46 Maintenance & Service Manual Download

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Lift the webcam module as much as the cable allows

(2)

Figure 7-5

Removing the webcam module

Disconnect the cable from the module.

Figure 7-6

Removing the webcam module

Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis

Summary of Contents for Pro 3420

Page 1: ...Maintenance Service Guide HP Pro 3420 All in One Business PC ...

Page 2: ...ch products and services Nothing herein should be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or omissions contained herein This document contains proprietary information that is protected by copyright No part of this document may be photocopied reproduced or translated to another language without the prior written consent of Hewlett Pa...

Page 3: ...ollow directions could result in bodily harm or loss of life CAUTION Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information NOTE Text set off in this manner provides important supplemental information iii ...

Page 4: ...iv About This Book ...

Page 5: ...the Software 5 3 Computer Setup F10 Utility 6 Computer Setup F10 Utilities 6 Using Computer Setup F10 Utilities 7 Computer Setup File 7 Computer Setup Storage 9 Computer Setup Security 11 Computer Setup Power 14 Computer Setup Advanced 15 4 Serial ATA SATA Drive Guidelines and Features 17 SATA Hard Drives 17 SATA Hard Drive Cables 17 SATA Data Cable 17 SMART ATA Drives 18 Hard Drive Capacities 18 ...

Page 6: ...24 Screws 24 Cables and Connectors 25 Hard Drives 25 Lithium Coin Cell Battery 25 6 Illustrated parts catalog 26 Computer major components 26 Boards memory processors 27 Mass storage devices not illustrated 28 Cables 29 Misc parts 30 Sequential part number listing 31 7 Removal and Replacement Procedures All in One AIO Chassis 33 Preparing to Disassemble the Computer 33 Rear Cover 34 Stand 36 Webca...

Page 7: ...blems 95 Solving Keyboard and Mouse Problems 96 Solving Hardware Installation Problems 98 Solving Network Problems 99 Solving Memory Problems 103 Solving Processor Problems 104 Solving CD ROM and DVD Problems 105 Solving USB Flash Drive Problems 107 Solving Front Panel Component Problems 108 Solving Internet Access Problems 108 Solving Software Problems 111 Contacting Customer Support 112 Appendix...

Page 8: ...dio 125 Appendix D Power Cord Set Requirements 126 General Requirements 126 Japanese Power Cord Requirements 126 Country Specific Requirements 127 Appendix E Specifications 128 All in One Models 128 Index 129 viii ...

Page 9: ...uch Adjustable tilt stand Intel 2nd Generation Core i3 and Intel Pentium Processors Intel H61Chipset Genuine Windows 7 Home Basic Genuine Windows 7 Home Premium Genuine Windows 7 Professional Genuine Windows 7 Starter Redflag or FreeDOS APJ only Integrated Intel HD Graphics Integrated Network Connection 10 100 1000 NIC Integrated low light webcam stereo speakers Wireless connectivity HP Wireless N...

Page 10: ...porated into the chassis generally contain 1000 ppm 0 1 of bromine or chlorine Printed circuit board and substrate laminates generally contain 1500 ppm 0 15 of total bromine and chlorine Service parts after purchase may not be BFR PVC free External accessories including power supplies power cords and peripherals are not BFR PVC free Front Components Figure 1 2 Front Components Table 1 1 Front Comp...

Page 11: ...nent 1 Power Button 8 Line out 2 LED Indicator HDD activity 9 4 USB 2 0 ports 3 LED Indicator Card reader activity 10 RJ 45 Ethernet 4 6 in 1 Media Card Reader 11 Power Connector 5 2 USB 2 0 ports 12 LED Indicator DC IN 6 MIC jack IN 13 Lock slot 7 Headphone jack OUT Rear Components 3 ...

Page 12: ...em The first time you turn on the computer the operating system is installed automatically This process takes about 5 to 10 minutes depending on which operating system is being installed Carefully read and follow the instructions on the screen to complete the installation CAUTION Once the automatic installation has begun DO NOT TURN OFF THE COMPUTER UNTIL THE PROCESS IS COMPLETE Turning off the co...

Page 13: ...ftware including support software for the operating system from http www hp com support Select your country and language select Download drivers and software and firmware enter the model number of the computer and press Enter Accessing Disk Image ISO Files There are disk image files ISO files included on your PC that contain the installation software for additional software These CD image files ar...

Page 14: ...f Test POST messages Post Messages Disabled suppresses most POST messages such as memory count product name and other non error text messages If a POST error occurs the error is displayed regardless of the mode selected To manually switch to Post Messages Enabled during POST press any key except F1 through F12 Establish an Ownership Tag the text of which is displayed each time the system is turned...

Page 15: ... F10 to enter Computer Setup 4 A choice of five headings appears in the Computer Setup Utilities menu File Storage Security Power and Advanced 5 Use the arrow left and right keys to select the appropriate heading Use the arrow up and down keys to select the option you want then press Enter To return to the Computer Setup Utilities menu press Esc 6 To apply and save changes select File Save Changes...

Page 16: ...a Saves system configuration including CMOS to a formatted 1 44 MB diskette a USB flash media device or a diskette like device a storage device set to emulate a diskette drive Restore from Removable Media Restores system configuration from a diskette a USB flash media device or a diskette like device Default Setup Save Current Settings as Default Saves the current system configuration settings as ...

Page 17: ...rs per track used by the BIOS to translate disk I O requests from the operating system or an application into terms the hard drive can accept Logical cylinders may not exceed 1024 The number of heads may not exceed 256 The number of sectors per track may not exceed 63 These fields are only visible and changeable when the drive translation mode is set to User Default Values Allows you to specify th...

Page 18: ...Specify the order of attached hard drives The first hard drive in the order will have priority in the boot sequence and will be recognized as drive C if any devices are attached Press F5 to disable a device Press Enter to select a device Press the arrow keys to drag a selected device NOTE MS DOS drive lettering assignments may not apply after a non MS DOS operating system has started Shortcut to T...

Page 19: ...ons see below See the Desktop Management Guide for more information Password Options Appears only if a power on password or setup password is set Allows you to Lock legacy resources appears if a setup password is set Default is enable Enable Disable Setup Browse Mode appears if a setup password is set allows viewing but not changing the F10 Setup Options without entering setup password Default is ...

Page 20: ...etwork controller must be either a PCI Express expansion card or embedded on the system board Default is enable System IDs Allows you to update Asset tag 18 byte identifier Ownership tag 80 byte identifier displayed during POST Chassis serial number or Universal Unique Identifier UUID number The UUID can only be updated if the current chassis serial number is invalid These ID numbers are normally ...

Page 21: ...TE To configure the Embedded Security Device a Setup password must be set Reset to Factory Settings some models Do not reset Reset Resetting to factory defaults will erase all security keys Changing this setting requires turning the computer off and then back on Default is Do not reset CAUTION The embedded security device is a critical component of many security schemes Erasing the security keys w...

Page 22: ... sleep state the system is in Each sleep state has a unique blink pattern Default is disabled S0 On Solid green LED S3 Stand By 3 blinks at 1Hz 50 duty cycle followed by a pause of 2 seconds green LED repeated cycles of 3 blinks and a pause S4 Hibernation 4 blinks at 1Hz 50 duty cycle followed by a pause of 2 seconds green LED repeated cycles of 4 blinks and a pause S5 Soft Off LED is off NOTE If ...

Page 23: ...ower strip you will not be able to use the suspend sleep feature or the Remote Management features POST Delay None 5 10 15 or 20 seconds Enabling this feature will add a user specified delay to the POST process This delay is sometimes needed for hard disks on some PCI cards that spin up very slowly so slowly that they are not ready to boot by the time POST is finished The POST delay also gives you...

Page 24: ...ble disable Use this option to disable multi processor support under the OS Default is enabled AMT Configuration Allows you to set AMT enable disable Allows you to enable or disable functions of the embedded Management Engine ME such as Active Management Technology AMT If set to disable the Management Engine is set to a temporarily disabled state and will not provide functions beyond necessary sys...

Page 25: ...ial 400 700 mV Drive voltages 3 3 V 5 V 12 V Jumpers for configuring drive N A Data transfer rate 3 0 Gb s SATA Hard Drive Cables SATA Data Cable Always use an HP approved SATA 3 0 Gb s cable as it is fully backwards compatible with the SATA 1 5 Gb s drives Current HP desktop products ship with SATA 3 0 Gb s hard drives SATA data cables are susceptible to damage if overflexed Never crease a SATA d...

Page 26: ...e size of a drive partition A drive partition is the largest segment of a drive that may be properly accessed by the operating system A single hard drive may therefore be subdivided into a number of unique drive partitions in order to make use of all of its space Because of the differences in the way that drive sizes are calculated the size reported by the operating system may differ from that mar...

Page 27: ...he procedures and precautions described in this chapter is essential for proper service CAUTION When the computer is plugged into an AC power source voltage is always applied to the system board You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage 19 ...

Page 28: ...moving DIPs from plastic tube 7 500 V 3 000 V 400 V 400 V 15 000 V 5 000 V 800 V 700 V 35 000 V 12 000 V 6 000 V 2 000 V Removing DIPs from vinyl tray Removing DIPs from Styrofoam Removing bubble pack from PCB Packing PCBs in foam lined box 2 000 V 3 500 V 7 000 V 5 000 V 4 000 V 5 000 V 20 000 V 11 000 V 11 500 V 14 500 V 26 500 V 21 000 V These are then multi packaged inside plastic tubes trays ...

Page 29: ...atic plastic Carbon loaded plastic Metallized laminate 1 500 7 500 15 000 Grounding the Work Area To prevent static damage at the work area use the following precautions Cover the work surface with approved static dissipative material Provide a wrist strap connected to the work surface and properly grounded tools and equipment Use static dissipative mats foot straps or air ionizers to give added p...

Page 30: ...arance on all vented sides of the computer and above the monitor to permit the required airflow Never restrict the airflow into the computer by blocking any vents or air intakes Do not place the keyboard with the keyboard feet down directly against the front of the desktop unit as this also restricts airflow Occasionally clean the air vents on all vented sides of the computer Lint dust and other f...

Page 31: ...mpened with clear water For stubborn stains use isopropyl rubbing alcohol No rinsing is needed as the alcohol will evaporate quickly and not leave a residue After cleaning always wipe the unit with a clean lint free cloth Occasionally clean the air vents on the computer Lint and other foreign matter can block the vents and limit the airflow Cleaning the Keyboard Follow all safety precautions in Ge...

Page 32: ... power to the computer is turned off Clean the mouse ball by first removing the retaining plate and the ball from the housing Pull out any debris from the ball socket and wipe the ball with a clean dry cloth before reassembly To clean the mouse body follow the procedures in Cleaning the Computer Case on page 23 Service Considerations Listed below are some of the considerations that you should keep...

Page 33: ...o any surface If you are inserting or removing a hard drive turn off the computer Do not remove a hard drive while the computer is on or in standby mode Before handling a drive ensure that you are discharged of static electricity While handling a drive avoid touching the connector For more information about preventing electrostatic damage refer to Electrostatic Discharge Information on page 20 Do ...

Page 34: ...bezel For use in models with a webcam 667106 001 For use in models without a webcam 667107 001 2 Display panel 20 5 inch non ZBD CMI 665474 001 Samsung 665473 001 LG 665472 001 3 System board 665465 001 4 Rear cover 665478 001 Stand not illustrated 665477 001 26 Chapter 6 Illustrated parts catalog ...

Page 35: ...illustrated 2130 3 4 GHz 3 MB L3 cache not for use in Brazil 665120 001 2120 3 3 GHz 3 MB L3 cache not for use in Brazil 638629 001 2105 3 1 GHz 3 MB L3 cache 655970 001 2100 3 1 GHz 3 MB L3 cache 638628 001 Intel Pentium Dual Core processors includes replacement thermal material not illustrated G860 3 0 GHz 3 MB L3 cache 665123 001 G850 2 9 GHz 3 MB L3 cache 655973 001 G840 2 8 GHz 3 MB L3 cache ...

Page 36: ...ives HP SuperMulti DVD Writer Drive LIghtScribe includes bezel 595115 001 HP SuperMulti DVD Writer Drive non LightScribe includes bezel 657958 001 Hard drives 2 TB 7200 rpm 613210 001 2 TB 5400 rpm 616608 001 1 5 TB 7200 rpm 613209 001 1 5 TB 5400 rpm 652272 001 1 TB 621418 001 750 GB 632938 001 500 GB 621421 001 320 GB 621420 001 250 GB 621419 001 28 Chapter 6 Illustrated parts catalog ...

Page 37: ...h WLAN module not illustrated 646806 001 2 Webcam cable 665729 001 3 Converter to system board 665727 001 4 Converter LG panels 665730 001 Samsung panels 665731 001 CMI panels 665732 001 5 Hard drive 665725 001 6 Optical drive 665726 001 7 LVDS 665728 001 Cables 29 ...

Page 38: ...ermal module heat sink 665468 001 Power supply 120W external not illustrated 665470 001 Mouse USB optical not illustrated 596410 001 Mouse wireless not illustrated 625685 001 Hard drive cage hardware kit includes cage rubber insert grommets not illustrated 665770 001 30 Chapter 6 Illustrated parts catalog ...

Page 39: ... PC3 10600 1333 MHz 652272 001 Hard drive 1 5 TB 5400 rpm 652279 001 HP WLAN combo 802 11b g n Bluetooth 2 1 card 655970 001 Intel Core i3 processor 2105 3 1 GHz 3 MB L3 cache 655971 001 Intel Pentium Dual Core processor G620 2 6 GHz 3 MB L3 cache 655972 001 Intel Pentium Dual Core processor G840 2 8 GHz 3 MB L3 cache 655973 001 Intel Pentium Dual Core processor G850 2 9 GHz 3 MB L3 cache 657958 0...

Page 40: ...right 665477 001 Stand 665478 001 Rear cover 665725 001 Hard drive cable 665726 001 Optical drive cable 665727 001 Converter to system board cable 665728 001 LVDS display cable cable 665729 001 Webcam cable 665730 001 Converter board cable for use with LG panels 665731 001 Converter board cable for use with Samsung panels 665732 001 Converter board cable for use with CMI panels 665769 001 Webcam l...

Page 41: ...ve all media CD DVD etc from the computer 2 Shut down the computer 3 After the system has completely shut down disconnect the power adapter from the back of the computer 4 Disconnect all other attached cables from the back of the computer 5 Place the computer face down on a soft flat surface HP recommends that you set down a blanket towel or other soft cloth to protect the screen surface from scra...

Page 42: ...mponents To remove the rear cover 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the two captive Phillips screws that secure the cover to the computer Figure 7 1 Removing the rear cover screws 34 Chapter 7 Removal and Replacement Procedures All in One AIO Chassis ...

Page 43: ... On the bottom of the cover press the release button 1 and then lift the cover off the computer 2 Figure 7 2 Removing the rear cover To replace the rear cover reverse the removal procedures Rear Cover 35 ...

Page 44: ...sassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 From the inside of the rear cover remove the four screws that secure the stand in the order indicated Figure 7 3 Removing the stand screws 4 Lift the stand from the rear cover To replace the stand reverse the removal procedures 36 Chapter 7 Removal and Replacement Procedures All in On...

Page 45: ...ured with two screws and has one connector Figure 7 4 Webcam module location To remove the webcam module 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the two screws 1 that secure the webcam module to the computer Webcam Module 37 ...

Page 46: ...odule as much as the cable allows 2 Figure 7 5 Removing the webcam module 5 Disconnect the cable from the module Figure 7 6 Removing the webcam module 38 Chapter 7 Removal and Replacement Procedures All in One AIO Chassis ...

Page 47: ...e 49 remove the cable eyelet screw 1 disconnect the cable from the webcam module 2 and remove the cable from the routing path 3 and then disconnect the cable from the system board 4 Figure 7 7 Removing the webcam cable To install a webcam module or cable reverse the removal procedures Webcam Module 39 ...

Page 48: ...he jumper on the converter board is set correctly for the display panel CAUTION Failure to properly set the converter board jumpers can result in damage to the converter board Determining panel manufacturer Remove the rear cover to determine the panel manufacturer by looking at the cable that connects from the panel to the converter board as follows 1 FFC cable LG panel 2 Wired cable Samsung panel...

Page 49: ...r for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Disconnect the two cables from the board 1 NOTE Be careful not to damage the cables when disconnecting them from the board Do not pull on the wires Converter Board 41 ...

Page 50: ... correct converter board jumper settings are stamped into the sheet metal on the computer next to the converter board Be sure to set the jumpers for the installed display panel You must position the jumper on the converter board based on the display panel installed Place the jumper on the header on the converter board as follows LG panel CJP2 pin 6 42 Chapter 7 Removal and Replacement Procedures A...

Page 51: ... CJP1 pin 1 Samsung panel CJP2 pin 5 CJP1 pin 2 Converter Board 43 ...

Page 52: ...side of the computer viewed from behind It is secured with one captive screw Figure 7 10 Optical drive location To remove the optical drive 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Loosen the captive Phillips screw 1 that secures the drive to the computer 44 Chapter 7 Removal and Replacement Proc...

Page 53: ...e the drive from the computer Figure 7 11 Removing the optical drive 5 If you need to remove the bracket from the optical drive remove the two screws 1 that secure the bracket to the drive and then remove the bracket from the drive 2 Figure 7 12 Removing the optical drive bracket Optical Drive 45 ...

Page 54: ...y from the front of the drive and then rotate it away to remove it Make note of the tabs that hold the bezel in place Figure 7 13 Removing the optical drive bracket To install an optical drive reverse the removal procedures 46 Chapter 7 Removal and Replacement Procedures All in One AIO Chassis ...

Page 55: ...21 001 320 GB 621420 001 250 GB 621419 001 The hard drive is located in the middle of the computer The drive is secured with one captive screw and is housed in a removable cage Figure 7 14 Hard drive location 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Loosen the captive Phillips screw 1 that secures the drive to the computer Hard Drive 47 ...

Page 56: ... to the hard drive cage Do not remove the rubber grommets behind each screw They must stay attached to the cage when installing a new hard drive NOTE Make sure the grommets are not broken or missing before reassembling the computer 5 Slide the hard drive out of the cage 2 Figure 7 16 Removing the hard drive from the cage To replace the hard drive reverse the removal procedures 48 Chapter 7 Removal...

Page 57: ...Figure 7 17 System board cover location To remove the system board cover 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the two screws 1 that secure the cover to the computer System Board Cover 49 ...

Page 58: ... Removing the system board cover To install the system board cover reverse the removal procedures When replacing the cover note the tabs that fit into slots in the computer on the side opposite the screws Figure 7 19 Replacing the system board cover 50 Chapter 7 Removal and Replacement Procedures All in One AIO Chassis ...

Page 59: ... memory DDR3 SDRAM small outline dual inline memory modules SODIMMs The memory sockets on the system board can be populated with up to two industry standard SODIMMs These memory sockets are populated with at least one preinstalled SODIMM To achieve the maximum memory support you can populate the system board with up to 8 GB of memory For proper system operation the SODIMMs must be industry standar...

Page 60: ...all unsupported SODIMMs To remove a memory module 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the system board cover see System Board Cover on page 49 4 To remove a memory module press outward on the two latches on each side of the SODIMM 1 allow the module to lift up to about a 45 degree ang...

Page 61: ...one screw and has one connected antenna Figure 7 22 WLAN module location To remove the WLAN module 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the system board cover see System Board Cover on page 49 4 Disconnect the antenna cable from the module 1 WLAN Module 53 ...

Page 62: ... 3 Figure 7 23 Removing the WLAN module NOTE WLAN modules are designed with a notch to prevent incorrect insertion 7 If you need to replace the WLAN antennas remove them from the routing path built into the computer Figure 7 24 Removing the WLAN antennas from the routing path 54 Chapter 7 Removal and Replacement Procedures All in One AIO Chassis ...

Page 63: ...ch antenna only one shown in the following image to the computer and then remove the antennas from the computer Figure 7 25 Removing the WLAN antennas To install the WLAN module or antennas reverse the removal procedures WLAN Module 55 ...

Page 64: ...computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the system board cover see System Board Cover on page 49 4 Remove the three screws 1 that secure the fan to the computer 5 Disconnect the fan cable 2 from the system board connector 56 Chapter 7 Removal and Replacement Procedures All in One AIO Chassis ...

Page 65: ...6 Remove the fan from the computer 3 Figure 7 27 Removing the fan assembly To install the fan reverse the removal procedures Fan 57 ...

Page 66: ...igure 7 28 Heat sink location To remove the heat sink 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the system board cover see System Board Cover on page 49 4 In the order indicated loosen the four captive Torx screws 1 4 that secure the heat sink to the system board 5 Remove the non captive To...

Page 67: ...6 Lift the heat sink from the computer 6 Figure 7 29 Removing the heat sink To install a heat sink reverse the removal procedures Heat Sink Thermal Module 59 ...

Page 68: ... 001 Intel Celeron processors G540 2 5 GHz 2 MB L3 cache 665119 001 G530 2 4 GHz 2 MB L3 cache 665117 001 G440 1 6 GHz 2 MB L3 cache 665467 001 To remove the processor 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the system board cover see System Board Cover on page 49 4 Remove the heat sink s...

Page 69: ...them could cause irreparable damage Once pins are damaged it may be necessary to replace the system board CAUTION The heat sink must be installed within 24 hours of installing the processor to prevent damage to the processor s solder connections Figure 7 30 Removing the processor To install a processor reverse the removal procedures Processor 61 ...

Page 70: ...tor 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the optical drive see Optical Drive on page 44 4 Remove the system board cover see System Board Cover on page 49 5 Remove two screws 1 that secure the optical drive connector to the computer 6 Remove eyelet screw 2 that secures the optical drive...

Page 71: ...ful not to damage the cables when disconnecting them from the board Do not pull on the wires Figure 7 32 Removing the optical drive connector 9 Remove the connector from the computer To install the optical drive connector reverse the removal procedures Optical Drive Cables and Connector 63 ...

Page 72: ...on To remove the hard drive connector 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the hard drive see Hard Drive on page 47 4 Remove the system board cover see System Board Cover on page 49 5 Remove two screws 1 that secure the hard drive connector to the computer 64 Chapter 7 Removal and Repl...

Page 73: ... careful not to damage the cable when disconnecting it from the board Do not pull on the wires Figure 7 34 Removing the hard drive connector 7 Remove the connector from the computer To install the hard drive connector reverse the removal procedures Hard Drive Cables and Connector 65 ...

Page 74: ...aker location To remove the speakers 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the system board cover see System Board Cover on page 49 4 Remove four screws two per speaker 1 that secure the speakers to the computer 5 Disconnect the speaker cable 2 from the system board 66 Chapter 7 Removal...

Page 75: ...e the cables from the routing path built into the computer 3 and then lift the speakers from the computer 4 Figure 7 36 Removing the speakers To install the speakers reverse the removal procedures Speakers 67 ...

Page 76: ...e 49 4 Remove the heat sink see Heat Sink Thermal Module on page 58 5 Remove the processor see Processor on page 60 6 Remove the memory modules see Memory on page 51 7 Remove the WLAN module see WLAN Module on page 53 8 Disconnect all cables from the system board noting their location for reinstallation 9 Remove the seven torx screws circled in image that secure the system board to the computer 10...

Page 77: ...To remove the front bezel while removing the minimal number of components 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on page 33 2 Remove the rear cover see Rear Cover on page 34 3 Remove the system board cover 1 see System Board Cover on page 49 4 Remove the speakers 2 see Speakers on page 66 5 Remove the 5 screws 3 that secure the bezel to the computer 6 Lift...

Page 78: ...move the bezel while removing a minimum number of components Determining panel manufacturer Remove the rear cover to determine the panel manufacturer by looking at the cable that connects from the panel to the converter board as follows 1 FFC cable LG panel 2 Wired cable Samsung panel To remove the display panel 1 Prepare the computer for disassembly see Preparing to Disassemble the Computer on pa...

Page 79: ...ay panel to the bracket and then disconnect the converter board cable from the display panel Figure 7 40 Removing the display panel screws and converter cable 7 Disconnect the display cable from the display panel Figure 7 41 Disconnecting the display cable 8 Lift the bracket assembly off the display panel To install a display panel reverse the removal procedures When replacing a display panel make...

Page 80: ...panel installed Place the jumper on the header on the converter board as follows Samsung panel CJP2 pin 6 CJP1 pin 1 LG panel CJP2 pin 5 CJP1 pin 2 CAUTION Incorrect jumper placement can result in damage to the converter board 72 Chapter 7 Removal and Replacement Procedures All in One AIO Chassis ...

Page 81: ...drive 2 Copy the Autoexec bat file from the WJ5EDID folder to the flash drive 3 Plug the flash drive into the computer 4 Select to boot from the flash drive 5 Type the display manufacturer LG or SAMSUNG when prompted on screen The tool writes the EDID CAUTION Failure to properly set the converter board jumpers can result in damage to the converter board Display Panel 73 ...

Page 82: ...the hard drive self test in Computer Setup Check the Power LED on the front of the computer to see if it is flashing red The flashing lights are error codes that will help you diagnose the problem Refer to Appendix A POST Error Messages on page 113 for more information If the screen is blank plug the monitor into a different video port on the computer if one is available Or replace the monitor wit...

Page 83: ...ata on the hard drive Be sure to back up all data files before running the restore process NOTE For sales information and warranty upgrades Care Packs call your local authorized service provider or dealer Helpful Hints If you encounter problems with the computer monitor or software see the following list of general suggestions before taking further action Check that the computer and monitor are pl...

Page 84: ...rom the system before turning it on If you have installed an operating system other than the factory installed operating system check to be sure that it is supported on the system If the system has multiple video sources embedded PCI or PCI Express adapters installed embedded video on some models only and a single monitor the monitor must be plugged into the monitor connector on the source selecte...

Page 85: ...eyboard or mouse Cause Solution Computer is in standby mode To resume from standby mode press the power button or press any key CAUTION When attempting to resume from standby mode do not hold down the power button for more than four seconds Otherwise the computer will shut down and you will lose any unsaved data System has locked up Restart computer Computer date and time display is incorrect Caus...

Page 86: ...ve Low on memory Add more memory Hard drive fragmented Defragment hard drive Program previously accessed did not release reserved memory back to the system Restart the computer Virus resident on the hard drive Run virus protection program Too many applications running 1 Close unnecessary applications to free up memory 2 Add more memory Some applications run in the background and can be closed by r...

Page 87: ...ot flashing Cause Solution System unable to power on Press and hold the power button for less than 4 seconds If the hard drive LED turns green then 1 Check that the voltage selector located on the rear of the power supply on some models is set to the appropriate voltage Proper voltage setting depends on your region 2 Remove the expansion cards one at a time until the 5V_aux light on the system boa...

Page 88: ... is not spinning make sure the fan s cable is plugged onto the system board header 3 If fan is plugged in but is not spinning then replace the heat sink fan assembly 4 Contact an authorized reseller or service provider Power LED flashes Red four times once every second followed by a two second pause and the computer beeps four times Beeps stop after fifth iteration but LEDs continue flashing Cause...

Page 89: ...ecking click Check Now Diskette is incorrectly inserted Remove diskette and reinsert Drive cable is not properly connected Reconnect drive cable Ensure that all four pins on the diskette power cable are connected to the drive Drive not found Cause Solution Cable is loose Reseat diskette drive data and power cable Removable drive is not seated properly Reseat the drive The device has been hidden in...

Page 90: ...kette Write in Storage Storage Options A problem has occurred with a disk transaction Cause Solution The directory structure is bad or there is a problem with a file In Microsoft Windows XP right click Start click Explore and select a drive Select File Properties Tools Under Error checking click Check Now In Microsoft Windows Vista or Windows 7 right click Start click Explore and right click on a ...

Page 91: ...te Cause Solution Diskette is not bootable Replace with a bootable diskette Diskette boot has been disabled in Computer Setup 1 Run Computer Setup and enable USB device in Storage Boot Order 2 Run Computer Setup and enable USB device in Storage Storage Options Removable Media Boot NOTE Both steps should be used as the Removable Media Boot function in Computer Setup overrides the Boot Order enable ...

Page 92: ...nd right click on a drive Select Properties then select the Tools tab Under Error checking click Check Now Drive not found identified Cause Solution Cable could be loose Check cable connections The system may not have automatically recognized a newly installed device See reconfiguration directions in the Solving Hardware Installation Problems on page 98 section If the system still does not recogni...

Page 93: ...d as first in a multi hard drive configuration If attempting to boot from a hard drive ensure it is attached to the system board dark blue SATA connector Bootable hard drive s controller is not listed first in the Boot Order Run the Computer Setup utility and select Storage Boot Order and ensure the bootable hard drive s controller is listed immediately under the Hard Drive entry Computer will not...

Page 94: ...er supply to make sure it is properly connected to the rear of the enclosure frame The removable hard drive is not recognized by the computer Cause Solution The removable hard drive carrier is not fully seated in the enclosure frame or the hard drive is not fully seated in the carrier Push the carrier into the enclosure frame so that the connector on the rear of the frame is properly seated If thi...

Page 95: ...emory Stick PRO card make sure that the lock tab located on the bottom of the Memory Stick PRO card is not in the locked position Can not write to the media card Cause Solution The media card is a read only memory ROM card Check the manufacturer s documentation included with your card to see if it writable Refer to the previous section for a list of compatible cards Media card is locked Locking th...

Page 96: ...lution The operating system needs time to recognize the device if the reader was just installed into the computer and you are turning the PC on for the first time Wait a few seconds so that the operating system can recognize the reader and the available ports and then recognize whatever media is inserted in the reader After inserting a media card in the reader the computer attempts to boot from th...

Page 97: ...n accept the same horizontal scan rate as the resolution chosen Computer is in standby mode Press the power button to resume from standby mode CAUTION When attempting to resume from standby mode do not hold down the power button for more than four seconds Otherwise the computer will shut down and you will lose any unsaved data Monitor cable is plugged into the wrong connector Systems may have a mo...

Page 98: ...e graphics card 3 Replace the system board For systems with integrated graphics replace the system board Blank screen and the power LED flashes Red seven times once every second followed by a two second pause and the computer beeps seven times Beeps stop after fifth iteration but LEDs continue flashing Cause Solution System board failure ROM detected failure prior to video Replace the system board...

Page 99: ...hts or fans may be too close to the monitor Monitor needs to be degaussed Degauss the monitor Refer to the documentation that came with the monitor for instructions Image is not centered Cause Solution Position may need adjustment Press the monitor s Menu button to access the OSD menu Select ImageControl Horizontal Position or Vertical Position to adjust the horizontal or vertical position of the ...

Page 100: ...ors using an analog VGA input connection only Cause Solution Flat panel monitor s internal digital conversion circuits may be unable to correctly interpret the output synchronization of the graphics card 1 Select the monitor s Auto Adjustment option in the monitor s on screen display menu 2 Manually synchronize the Clock and Clock Phase on screen display functions To download a SoftPaq that will a...

Page 101: ...ned down or muted Double click the Speaker icon on the taskbar then make sure that Mute is not selected and use the volume slider to adjust the volume Audio is hidden in Computer Setup Enable the audio in Computer Setup Security Device Security System Audio The external speakers are not turned on Turn on the external speakers The audio device may be connected to the wrong jack Ensure that the devi...

Page 102: ...ication has selected the correct audio device The operating system controls may be set to use a different audio device as the default output device than what is expected Set the operating system to use the correct audio device Sound from headphones is not clear or muffled Cause Solution Headphones are plugged into the rear audio output connector The rear audio output connector is for powered audio...

Page 103: ...ing table Table A 8 Solving Printer Problems Printer will not print Cause Solution Printer is not turned on and online Turn the printer on and make sure it is online The correct printer drivers for the application are not installed 1 Install the correct printer driver for the application 2 Try printing using the MS DOS command DIR C printer port where printer port is the address of the printer bei...

Page 104: ... Windows Vista or Windows 7 Desktop click Start click the arrow on the lower right corner of the Start menu then select Shut Down 2 After the shutdown is complete reconnect the keyboard to the back of the computer and restart the computer Program in use has stopped responding to commands Shut down your computer using the mouse and then restart the computer Keyboard needs repairs See the Worldwide ...

Page 105: ...puter Mouse may need cleaning Remove the roller ball cover on the mouse and clean the internal components Mouse may need repair See the Worldwide Limited Warranty for terms and conditions Computer is in standby mode Press the power button to resume from standby mode CAUTION When attempting to resume from standby mode do not hold down the power button for more than four seconds Otherwise the comput...

Page 106: ...er switch of new external device is not turned on Turn off the computer turn on the external device then turn on the computer to integrate the device with the computer system When the system advised you of changes to the configuration you did not accept them Reboot the computer and follow the instructions for accepting the changes A plug and play board may not automatically configure when added if...

Page 107: ...t LEDs continue flashing Cause Solution Graphics card is not seated properly or is bad or system board is bad For systems with a graphics card 1 Reseat the graphics card Power on the system 2 Replace the graphics card 3 Replace the system board For systems with integrated graphics replace the system board Power LED flashes Red ten times once every second followed by a two second pause and the comp...

Page 108: ... the check box to Allow this device to bring the computer out of standby To enable Wake on LAN in Windows Vista 1 Select Start Control Panel 2 Under Network and Internet select View network status and tasks 3 In the Tasks list select Manage network connections 4 Double click Local Area Connection 5 Click the Properties button 6 Click the Configure button 7 Click the Power Management tab then selec...

Page 109: ...r Setup and enable network controller 2 Enable the network controller in the operating system via Device Manager Network driver is not properly loaded Reinstall network drivers System cannot autosense the network Disable auto sensing capabilities and force the system into the correct operating mode Diagnostics reports a failure Cause Solution The cable is not securely connected Ensure that the cab...

Page 110: ...licts with the embedded NIC Under the Computer Setup Advanced menu change the resource settings for the board Network controller stops working without apparent cause Cause Solution The files containing the network drivers are corrupted Reinstall the network drivers using the Recovery Disc Set created from the hard drive s Recovery Partition The cable is not securely connected Ensure that the cable...

Page 111: ... other management functions Table A 13 Solving Memory Problems System will not boot or does not function properly after installing additional memory modules Cause Solution A memory module is not installed in the DIMM1 or XMM1 socket Ensure that a memory module is installed in the DIMM1 or XMM1 socket on the system board This socket must be populated with a memory module Memory module is not the co...

Page 112: ...isolate the faulty module 3 Replace third party memory with HP memory 4 Replace the system board Solving Processor Problems If you encounter processor problems common causes and solutions are listed in the following table Table A 14 Solving Processor Problems Poor performance is experienced Cause Solution Processor is hot 1 Make sure the airflow to the computer is not blocked 2 Make sure the fans ...

Page 113: ...abled in Computer Setup Run the Computer Setup utility and disable Network Server Mode in Security Password Options Non bootable CD in drive Try a bootable CD in the drive Boot order not correct Run the Computer Setup utility and change boot sequence in Storage Boot Order Drive not found identified Cause Solution Cable could be loose Check cable connections The system may not have automatically re...

Page 114: ...gency eject hole and push firmly Slowly pull the tray out from the drive until the tray is fully extended then remove the disc CD ROM CD RW DVD ROM or DVD R RW drive cannot read a disc or takes too long to start Cause Solution Media has been inserted upside down Re insert the media with the label facing up The DVD ROM drive takes longer to start because it has to determine the type of media played...

Page 115: ...ice is attached to a USB port that has been hidden in Computer Setup Run the Computer Setup utility and ensure that Device available is selected for Front USB Ports and Rear USB Ports under Security Device Security The device was not properly seated before power up Ensure the device is fully inserted into the USB port before applying power to the system System will not boot from USB flash drive Ca...

Page 116: ...ot working 1 Replace the device 2 Restart the computer USB ports on the computer are disabled in Computer Setup Run the Computer Setup utility and ensure that Device available is selected for appropriate USB ports under Security USB Security Solving Internet Access Problems If you encounter Internet access problems consult your Internet Service Provider ISP or refer to the common causes and soluti...

Page 117: ...er can store temporarily with the Web browser This is useful for having the browser remember some specific information that the Web server can later retrieve Windows 7 1 Select Start Control Panel 2 Click Network and Internet 3 Click Internet Options 4 In the Browsing history section on the General tab click the Delete button 5 Select the Cookies check box and click the Delete button Windows Vista...

Page 118: ...le click System 3 Click the Hardware tab 4 In the Device Manager area click the Device Manager button 5 Double click Modems 6 Double click Agere Systems PCI SV92PP Soft Modem 7 On the General tab click Diagnostics 8 Click Query Modem A Success response indicates the modem is connected and working properly Windows Vista 1 Select Start Control Panel 2 Click on System and Maintenance 3 Click on Syste...

Page 119: ... has appeared Cause Solution POST error has occurred Observe the beeps and LED lights on the front of the computer See Appendix A POST Error Messages on page 113 to determine possible causes See the Restore Kit or the Worldwide Limited Warranty for terms and conditions Computer will not continue after HP logo screen has appeared Cause Solution System files may be damaged Use recovery diskette to s...

Page 120: ...ttp www hp com NOTE If you take the computer to an authorized reseller dealer or service provider for service remember to provide the setup and power on passwords if they are set Refer to the number listed in the warranty or in the Support Telephone Numbers guide for technical assistance 112 Appendix A Troubleshooting Without Diagnostics ...

Page 121: ...ge To manually switch to the POST Messages Enabled mode during POST press any key except F10 F11 or F12 The default mode is POST Message Disabled The speed at which the computer loads the operating system and the extent to which it is tested are determined by the POST mode selection Quick Boot is a fast startup process that does not run all of the system level tests such as the memory test Full Bo...

Page 122: ...added remove it to see if the problem remains 2 In Computer Setup set Advanced Device Options NIC PXE Option ROM Download to DISABLE to prevent PXE option ROM for the internal NIC from being downloaded during POST to free more memory for an expansion card s option ROM Internal PXE option ROM is used for booting from the NIC to a PXE server 162 System Options Not Set Configuration incorrect RTC rea...

Page 123: ...ket identified in the error message is missing critical SPD information or is incompatible with the chipset 1 Verify proper memory module type 2 Try another memory socket 3 Replace DIMM with a module conforming to the SPD standard 214 DIMM Configuration Warning Populated DIMM Configuration is not optimized Rearrange the DIMMs so that each channel has the same amount of memory 219 ECC Memory Module...

Page 124: ...nce last system startup No action required 917 Front Audio Not Connected Front audio harness has been detached or unseated from motherboard Reconnect or replace front audio harness 921 Device in PCI Express slot failed to initialize There is an incompatibility problem with this device and the system or PCI Express Link could not be retrained to an x1 Try rebooting the system If the error reoccurs ...

Page 125: ... is proper intake and exhaust ventilation for the enclosure 2200 PMM Allocation Error during MEBx Download Memory error during POST execution of the Management Engine ME BIOS Extensions option ROM 1 Reboot the computer 2 Unplug the power cord re seat the memory modules and reboot the computer 3 If the memory configuration was recently changed unplug the computer restore the original memory configu...

Page 126: ...irmware version 3 If the error still persists replace the system board 2217 ME Firmware Version request failure ME firmware is not properly responding to BIOS query for version information 1 Reboot the computer 2 If the error persists update to the latest BIOS version and ME firmware version 3 If the error still persists replace the system board 2218 ME Firmware Version should be updated ME firmwa...

Page 127: ...ion and ME firmware version 3 If the error still persists replace the system board 2231 ME error during MEBx execution Error occurred during MEBx execution which fails into ME grouping 1 Reboot the computer 2 If the error persists update to the latest BIOS version and ME firmware version 3 If the error still persists replace the system board 2232 AMT error during MEBx execution Error occurred duri...

Page 128: ...ard with computer turned off 2 Check connector for bent or missing pins 3 Ensure that none of the keys are depressed 4 Replace keyboard Parity Check 2 Parity RAM failure or a PCI PCIe device is asserting a SERR Run Computer Setup and Diagnostic utilities To disable a PCI PCIe device from asserting a SERR run the Computer Setup utility and select Advanced Bus Options SERR Generation Disable 120 App...

Page 129: ...end to RAM mode some models only or normal Suspend mode None required Press any key or move the mouse to wake the computer Red Power LED flashes two times once every second followed by a two second pause Beeps stop after fifth iteration but LEDs continue until problem is solved 2 Thermal protection activated Air flow is restricted a fan may not be functioning or the heatsink is not properly attach...

Page 130: ... solved 5 Pre video memory error CAUTION To avoid damage to the DIMMs or the system board you must unplug the computer power cord before attempting to reseat install or remove a DIMM module 1 Reseat DIMMs 2 Replace DIMMs one at a time to isolate the faulty module 3 Replace third party memory with HP memory 4 Replace the system board Red Power LED flashes six times once every second followed by a t...

Page 131: ...1 The current processor does not support a feature previously enabled on this system 1 Install a TXT capable processor 2 Disable TXT in the Computer Setup F10 utility 3 Reinstall the original processor System does not power on and LEDs are not flashing None System unable to power on Press and hold the power button for less than 4 seconds If the hard drive LED turns green the power button is workin...

Page 132: ...e connectors may not be used on the product being serviced Ethernet BNC Connector and Icon Pin Signal 1 2 Data Ground USB Connector and Icon Pin Signal 1 2 3 4 5 VDC Data Data Ground Microphone Connector and Icon 1 8 miniphone Pin Signal 1 Tip 2 Ring 3 Shield Audio_left Audio_Right Ground 124 Appendix C Connector Pin Assignments ...

Page 133: ...Audio_left Power_Right Ground Line in Audio Connector and Icon 1 8 miniphone Pin Signal 1 Tip 2 Ring 3 Shield Audio_In_Left Audio_In_Right Ground Line out Audio Connector and Icon 1 8 miniphone Pin Signal 1 Tip 2 Ring 3 Shield Audio_Out_Left Audio_Out_Right Ground Headphone 125 ...

Page 134: ...cy responsible for evaluation in the country where the power cord set will be installed 2 The power cord set must have a minimum current capacity of 10A 7A Japan only and a nominal voltage rating of 125 or 250 volts AC as required by each country s power system 3 The diameter of the wire must be a minimum of 0 75 mm2 or 18AWG and the length of the cord must be between 1 8 m 6 feet and 3 6 m 12 fee...

Page 135: ... set fittings appliance coupler and wall plug must bear the certification mark of the agency responsible for evaluation in the country where it will be used 2 The flexible cord must be Type SVT or equivalent No 18 AWG 3 conductor The wall plug must be a two pole grounding type with a NEMA 5 15P 15A 125V or NEMA 6 15P 15A 250V configuration 3 Appliance coupler flexible cord and wall plug must bear ...

Page 136: ... 1 minimum contract ratio 20 inch diagonal widescreen HD 900p WLED anti glare display 1600 x 900 resolution 16 9 1000 1 typical 250 nits typical 5 ms Up to 160º horizontal 160º vertical 10 1 minimum contract ratio Temperature Range Operating Nonoperating 41 to 95 F 22 to 149 F 5 to 35 C 30 to 65 C Relative Humidity noncondensing Operating 15 80 at 79 F 15 80 at 26 C Maximum Altitude unpressurized ...

Page 137: ... part number 29 32 country power cord set requirements 127 Customer Support 74 112 D diskette problems 81 display panel removing 70 spare part number 26 32 spare part numbers 70 display panel cable spare part number 32 E electrostatic discharge ESD 20 preventing damage 20 error codes 113 121 messages 114 ethernet BNC pin assignments 124 F fan removing 56 spare part number 30 32 features overview 1...

Page 138: ...98 Internet access 108 keyboard 96 Media Card Reader 87 memory 103 monitor 89 mouse 96 network 99 power 80 printer 95 processor 104 software 111 processor removing 60 spare part number 31 processor problems 104 R rear components 3 rear cover removing 34 spare part number 26 32 removal and replacement procedures 62 64 All in One chassis 33 converter board 40 display panel 70 fan 56 front bezel 69 h...

Page 139: ...ewdriver 24 U USB pin assignments 124 V ventilation proper 22 W Wake on LAN feature 100 webcam cable spare part number 29 32 webcam module removing 37 spare part number 27 32 WLAN module removing 53 spare part number 27 31 Index 131 ...

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HP Pro 3420, Maintenance & Service Manual

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Summary of Contents for Pro 3420

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