HP t420 Troubleshooting Guide

HP t420 Manual

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  • HP t420 | Troubleshooting Guide - Page 1
    Troubleshooting Guide HP t420 Thin Client
  • HP t420 | Troubleshooting Guide - Page 2
    HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP Part Number: 806118-001 Product notice This guide describes features that are common to most models.
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    About This Book WARNING! Text set off in this manner indicates that failure to follow 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
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    iv About This Book
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    replacing the battery ...11 Appendix A Computer Setup (F10) Utility, BIOS Settings 13 BIOS Settings from the HP BIOS Configure Utility (HPBCU 20 Appendix B Diagnostics and Troubleshooting 22 LEDs ...22 Wake-on LAN ...22 Power-On Sequence ...23 Resetting the Setup and power-on Passwords 23 Power
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    (No-Flash) Unit Troubleshooting 29 Configuring a PXE Server ...30 Appendix C HP ThinUpdate (add-on only) ...31 Appendix D Device management ...32 Appendix E Adding an Image Restore Tool ...33 Appendix F System BIOS ...34 Updating or restoring a BIOS ...34 Appendix G Power cord set requirements
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    guide describes the features of the thin client. For a complete list of the hardware and software installed on a specific model, go to http://www.hp.com/go/quickspecs and search for your specific thin client model. Various options are available for your thin client One VGA analog video output and one
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    Front panel components For more information, go to http://www.hp.com/go/quickspecs and search for your specific thin client model to find the model-specific QuickSpecs. (1) Power button (3) Headset jack This connector supports audio out (speakers and headphones) or a headset (with headphones
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    Rear panel components For more information, go to http://www.hp.com/go/quickspecs and search for your specific thin client model to find the model-specific QuickSpecs. (1) Cable lock slot (4) VGA connector (2) Power connector (5) Hi-Speed universal serial bus (USB) 2.0 connectors (2) These
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    in equipment damage. The rubber feet may be removed, if required. Serial number location Every thin client includes a unique serial number located as shown in the following illustration. Have this number available when contacting HP customer service for assistance. 4 Chapter 1 Product features
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    at http://www.hp.com/ergo. WARNING! Energized parts inside. Disconnect power to the equipment before removing the enclosure. Replace and secure the enclosure before re-energizing the equipment. CAUTION: Static electricity can damage the electrical components of the thin client or optional equipment
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    important instructions and identification information, which may be lost if the access panel is not used. DO NOT use any access panel except the one that is provided by HP for use with this thin client. Before removing the access panel, be sure that the thin client is turned off and the power cord
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    Replacing the access panel To replace the access panel: 1. Align the tabs on each side of the access panel with the slots in the chassis. Set the access panel on the chassis, approximately 6 mm (.24 in) inside the edge of the chassis, and then slide the panel toward the front of the chassis (1) into
  • HP t420 | Troubleshooting Guide - Page 14
    Locating internal components 1 PCIe mini card for the Wi-Fi module 2 USB 3.0 module holder with module installed 3 Battery 4 512 MB SDRAM memory chips This thin client has four 512 MB SDRAM memory chips soldered to the system board: two on this side and two directly below them on the other side. 5
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    USB 3.0 flash drive Before returning the thin client to HP for exchange, you may choose to remove and safeguard the USB 3.0 flash drive. Removing the USB 3.0 flash drive WARNING! Before removing the access panel, be sure that the thin client is turned off and the power cord is disconnected from the
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    access panel, be sure that the thin client is turned off and the power cord is disconnected from the electrical outlet. To Install the USB 3.0 flash drive, perform the following steps: 1. Lay the thin client down with the right side up. 2. Remove the thin client access panel. See Removing the access
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    of the thin client. 5. Remove the thin client access panel. See Removing the access panel on page 6. 6. Locate the battery and battery holder on the system board. 7. Depending on the type of battery holder on the system board, complete the following instructions to replace the battery. Type
  • HP t420 | Troubleshooting Guide - Page 18
    the battery (2). 8. Replace and secure the access panel. See Replacing the access panel on page 7. 9. Replace the thin client stand. 10. Reconnect the power cord and turn on the thin client. 11. Lock any security devices that were disengaged when the thin client cover or access panel was removed. HP
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    A Computer Setup (F10) Utility, BIOS Settings Computer Setup (F10) Utilities Use Computer Setup (F10) Utility to do the following: ● Change factory default settings. ● Set the system date and time. ● Set, view, change, or verify the system configuration, including settings for processor, graphics,
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    do not want applied, select Ignore Changes and Exit. ● To reset to factory settings, select Apply Defaults and Exit. This option will restore the original factory system defaults. CAUTION: Do NOT turn the computer power OFF while the BIOS is saving the Computer Setup (F10) changes because the CMOS
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    Lets the user select the values of the Setup options preset by the BIOS as the default values for all future default loading. Loads the original factory system configuration settings for use by a subsequent "Apply Defaults and Exit" action. Exits Computer Setup without applying or saving any changes
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    Configuration Storage Options Boot Order Description Lists all installed BIOS USB external storage. Legacy Support Allows you to turn off all legacy support on the computer, including booting Override Boot Order To boot one time from a device other than the default device specified in Boot Order,
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    Computer Setup-Security NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration. Table A-1 Computer Setup-Security Option Description Setup Password Allows you to set and enable a setup (administrator) password. NOTE: If the setup password is set, it
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    . Computer Setup-Power NOTE: Support for specific Computer Setup options may vary depending on the hardware configuration. Table A-2 Computer Setup-Power Option OS Power Management Hardware Power Management Description Runtime Power Management (Enable/Disable) Idle Power Savings (Extended
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    Volume (Soft/Loud/Mute). Default is Soft. ● Num Lock State at Power-On (off/on). Default is off. ● Multi-Processor (Enable, Disable) Default Enabled; Use this option to disable multiprocessor support under the OS. ● NIC Option ROM Download (PXE, disabled). The BIOS contains an embedded NIC option
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    Settings from the HP BIOS Configure Utility (HPBCU) Some BIOS settings may be changed locally within the operating system without having to go through the F10 utility. This table identifies the items that can be controlled with this method. BIOS Setting Language Default Value English Set Time
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    Multi-Processor Enable Internal Speaker Enable NIC Option ROM Download PXE Enable On, Previous State 5, 10, 15, 20, 60 Enable 00:00:23:59 Disable Enable Off Disable, Force 32M, 64M, 128M, 256M, 1G Disable Disable Disable Changing BIOS Settings from the HP BIOS Configure Utility (HPBCU) 21
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    Troubleshooting LEDs LED Status Power LED Off When the unit is plugged into the wall socket and the Power LED is off, the unit is powered off. However, the network can trigger a Wake On LAN event in order to perform management functions. Power rear panel of the thin client. The LEDs are visible
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    -On Diagnostic Tests". 7. The unit boots the operating system. Resetting the Setup and power-on Passwords You can reset the Setup and Power-on passwords as follows: 1. Turn off the computer and disconnect the power cord from the power outlet. 2. Remove the side access panel and the metal side cover
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    DRAM Serial Port Timer RTC CMOS battery NAND flash device Description Tests boot Power LED flashes two 2 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem service provider. OR 24 Appendix B Diagnostics and Troubleshooting
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    problem is solved. Power failure (power supply 1. is overloaded). OR The incorrect external power supply adapter is being used on the unit. Check if a device is causing the problem by removing ALL attached devices. Power on the system. If the system enters the POST, then power off and replace one
  • HP t420 | Troubleshooting Guide - Page 32
    Power Loss Invalid time or date in configuration memory. RTC (real-time clock) battery may need to be replaced. Reset the date and time under Control Panel (Computer Setup can also be used). If the problem persists, replace the RTC battery. See the Removal and Replacement section for instructions
  • HP t420 | Troubleshooting Guide - Page 33
    214-DIMM Configuration Warning Populated DIMM Configuration is . Reflash the system ROM with the latest BIOS image. 512-Chassis, Rear Chassis, or failed to initialize There is an incompatibility/problem with this Try rebooting the system. Available at http://www.hp.com/support.) Back up contents
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    the thin client is experiencing operating problems or will not power on, review the following items. Table B-3 Power-On Troubleshooting Issue Procedures The thin client unit is experiencing operating problems. Ensure that the following connectors are securely plugged into the thin client unit
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    information: Table B-4 Diskless Unit Troubleshooting Item Information Action MAC Address NIC portion of the system board is OK If no MAC Address, the system board is at fault. Contact the Call Center for service. GUID General system board information If no GUID information, the system board
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    Configuring a PXE Server NOTE: All PXE software is supported by authorized service providers on a warranty or service contract basis. Customers that call the HP Customer Service Center with PXE issues and questions should be referred to their PXE provider for assistance. Additionally, refer to the
  • HP t420 | Troubleshooting Guide - Page 37
    is downloaded to instructions. A second partition, which uses the NTFS file system, contains the actual image but will not be detected by Windows when you are viewing the drive contents. 5. When the process is complete, do one of the following: ● If you are running HP ThinUpdate on a thin client
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    management tool used to manage the full life cycle of HP thin clients to include Discover, Asset Management, Deployment and Configuration. For more information on HP Device Manager, please visit www.hp.com/go/hpdm. If you wish to manage the t420 with other management tools such as Microsoft SCCM or
  • HP t420 | Troubleshooting Guide - Page 39
    a unique name for the job that you will use to deploy the original thin client image. 5. Click the name of the new job. 6. Near the upper operating system images use FLASH.IMG 9. Under In which OS would you like to run this script? Click DOS. support/documentation) for more detailed information. 33
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    prompt with administrator privileges. The HP ThinPro or HP Smart Client Linux OS images include the utility for updating the BIOS, but the binary file to flash must be copied from the DOS Flash folder to the unit. Review the README.txt file for more specific instructions in the SoftPaq. The Linux
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    feature on the computer permits it to operate from any line voltage between 100-120 or 220-240 volts AC. Power supplies on those computers that do not have external power switches are equipped with internal switches that sense the incoming voltage and automatically switch to the proper voltage. The
  • HP t420 | Troubleshooting Guide - Page 42
    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 a "T" mark and registration number with a Japanese Industrial Standard C8303 (7A, 125V) configuration. 36 Appendix G Power cord set requirements
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    the BIOS settings to factory default settings. 1. Download the latest BIOS (system ROM) from the HP website. 2. Follow the instructions to flash the BIOS that are found on the website. Flashing the BIOS will reset it back to factory settings. 3. Turn on the system, and while system is powering on
  • HP t420 | Troubleshooting Guide - Page 44
    ) Loss of data Comments If main power is removed If battery power is removed Only S0/S3/S5/G3 ACPI states are supported If main power is removed The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express
  • HP t420 | Troubleshooting Guide - Page 45
    . Grounding methods There are several methods for grounding. Use one or more of the following methods when handling or installing electrostatic-sensitive parts: ● Use a wrist strap connected by a ground cord to a grounded Thin Client chassis. Wrist straps are flexible straps of 1 megohm +/- 10
  • HP t420 | Troubleshooting Guide - Page 46
    ) Power Supply Operating Input Voltage Range Rated Line Frequency Power Output (maximum) Rated Output Current (maximum) Output Voltage 180 mm 35 mm 140 mm 740 g 10° to 35°C -30° to 60°C 7.1 in 1.4 in 5.5 in 1.63 lbs 50° to 95°F -22° to 140°F ** The operating temperature range when the thin client
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    altitude 40 dimensions 40 hardware 40 humidity 40 power output 40 power supply 40 rated output current 40 relative humidity 40 temperature 40 thin client 40 weight 40 T temperature specifications 40 troubleshooting 28 U updating a BIOS 34 USB 3.0 flash drive removing 9 replacing 10 Index
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    USB connectors location 2, 3 V VGA connector location 3 W Wake-on LAN (WOL) 22 warnings burn 5 electric shock 5, 6, 9, 10, 11 grounding plug 5 NIC receptacles 5 websites HP 1 weight 40 42 Index
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Troubleshooting Guide
HP t420 Thin Client