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HP Z420 Workstation
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HP Z420 Workstation

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— answers from the official manual

Answers from the official manual.

Common questions

The Z420 is the Z440's predecessor, announced in March 2012 on Intel's Sandy Bridge Xeon E5, refreshed with Ivy Bridge Xeon E5 v2 in September 2013, and succeeded by the Z440 in September 2014. If you're reading this, you probably have one in service, you're shopping the used market, or you're choosing between a Z420 and a Z440 listing. The short version: same chassis design, same build quality, two-generation gap on the CPU, similar service profile. The Z420 typically commands a meaningfully lower used-market price than a comparable Z440, and for many workloads it's still enough.

This page covers what's specifically different about the Z420, and what to keep an eye on after a decade in service.

Z420 vs. Z440 — what changed and what didn't

Same chassis design. Tool-less side panel, integrated handles, same drive cage approach, same thermal architecture. Service procedures translate one-to-one. If you've worked on a Z440, you'll work on a Z420 with no surprises.

Same clearance requirement. 15.24 cm (6 inches) front and back. Same intake geometry, same filter approach, same consequences if you ignore it.

Different CPU socket. Z420 is LGA 2011 (not 2011-3). Xeons that fit a Z420 don't fit a Z440 and vice versa. CPU upgrades within the Z420 are limited to E5-1600 and E5-2600 v1/v2. The top-end Z420 chip is roughly equivalent to a low-mid Z440 chip in absolute performance.

Different memory. Z420 takes DDR3 ECC, not DDR4. 8 DIMM slots, 64GB max practically (128GB theoretical with rare 16GB DIMMs). Z440 jumps to 128GB max with normal 16GB DDR4 DIMMs.

Same power supply approach. 600W standard. PSU connectors are similar enough that GPU upgrades work cleanly through the Z420 generation.

If your workload is single-threaded and modern (a recent CAD app, modern Adobe suite, a game or two), the Z440 is meaningfully faster. If your workload is older / well-threaded / IO-bound (older render pipelines, file servers, virtualization labs), the Z420 still pulls its weight and saves you 50% on the used purchase.

What's worth checking before you buy a used Z420

The PSU date. Original Z420 PSUs are now 10+ years old. If the listing photo shows a fresh-looking PSU sticker, fine. If it looks original and yellowed, plan on a replacement within a year or two. Power supplies on this generation degrade quietly — outputs drift before they fail, and a PSU with drifting rails causes weird "random hangs" that look like RAM or CPU issues.

Capacitor age. Pop the side panel and look at the motherboard caps. Bulging or leaking electrolytics are the death sentence for boards this age. Most Z420s look fine. The bad ones are obviously bad.

The dust filter. Behind the front bezel. If it looks like the previous owner never cleaned it, the fans have been running hard. Check the fan bearings (power on, listen — bearing whine at idle is a tell).

Thermal paste age. Stock paste is 10+ years old. Even on a "lightly used" Z420, plan a re-paste in your first month of ownership. Drops idle temps 10-15°C reliably on these.

BIOS check, in case it matters

Power on, press Esc, then F10 for the Setup utility. File → System Information shows the BIOS version. The Z420 went through several BIOS revisions, including ones that fixed memory training on certain DIMM combinations. Worth comparing your installed version against the latest on HP's Z420 support page and updating if you're behind.

Source: page 5 of the user guide

Setup notes you'll only need once

First boot. Connect mouse, keyboard, monitor, and power cord. Plug the power cord into an easily accessible AC outlet — the manual is firm about this for safety reasons (you should be able to disconnect power without rearranging your desk in an emergency). The chassis ground is via the AC plug, so don't use cheap two-prong adapters.

Weight. Standard config is 13.2 kg (29 lb). Minimum 12.5 kg, max around 16 kg. The integrated handles aren't decorative — use them when you move it, and don't trust under-desk slide rails rated below 14 kg.

Operating envelope. 5°C to 35°C ambient, derate 1°C per 305m above 1,524m altitude. Same as the Z440 because it's the same chassis cooling.

Source: pages 12-16 of the user guide

Upgrades that are worth it on a used Z420

  • Re-paste the CPU. Cheapest, biggest gain. Idle temps drop measurably, fan ramp is gentler, full-load thermal headroom returns.
  • Replace the dust filter felt. OEM part is cheap, prevents the next 18 months of fan-bearing wear.
  • Add an SSD via the 2.5" or 3.5" bay. The Z420 doesn't have native NVMe (predates the M.2 spec on workstations), so you're SATA-only without a PCIe adapter card. SATA SSD is still a massive boot-time improvement over the original spinning drive most of these shipped with.
  • GPU upgrade. PSU has the right connectors, slot is full-length PCIe 3.0. A modern mid-range GPU works.

Upgrades that aren't

  • CPU swap to the top-end chip. The premium for a top-bin Xeon E5-2697 v2 doesn't pay back vs. just buying a Z440 with a v3 chip.
  • NVMe via PCIe adapter. Works, but the Z420's BIOS doesn't support NVMe boot natively. You can boot from a SATA drive and use NVMe as data, or jump through hoops with a clover-style bootloader. Not worth the effort — get a Z440 if you want NVMe boot.

Diagnostics

HP Diagnostics (F2 at boot) before you assume anything is bad. It catches a lot of "is this RAM dead" and "is this drive failing" questions before you replace parts.

For service tickets that don't resolve through the obvious checks, https://support.hp.com/us-en/product/details/hp-z420-workstation has the part lookup. Z420 parts are still available but the inventory is shrinking — order ahead if you depend on this machine.

Up the line

Full Manual

48 pages
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HP Z420 Workstation manual — page 1

HP Z420, Z620, and Z820 Workstation Series User Guide

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HP Z420 Workstation manual — page 2

Copyright Information First Edition: March 2012 Part number: 669529-001 Warranty Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. The information in this document is provided “as is” without warranty of any kind, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose, and is subject to change without notice. The warranties for HP products are set forth in the express limited warranty statements accompanying such products. Nothing herein should be construed as constituting an additional warranty. 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-Packard Company. Trademark Credits The HP logo is a trademark of Hewlett- Packard Company in the U.S. and other countries. Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation. Intel is a trademark of Intel Corporation in the U.S. and other countries and is used under license. Acrobat is a trademark of Adobe Systems Incorporated. ENERGY STAR is a U.S. registered mark of the United States Environmental Protection Agency.

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HP Z420 Workstation manual — page 3

About this guide This guide provides setup and troubleshooting information for the HP Z Workstation series. It includes these topics: Guide topics Locating HP resources on page 1 Workstation features on page 6 Setting up the workstation on page 14 Setting up and restoring Microsoft Windows on page 26 Setting up and restoring Linux on page 28 Diagnostics and Minor Troubleshooting on page 33 Routine Care on page 39

Tip:

If you do not find what you are looking for in this guide: — Find technical details in the Manufacturing and Service Guide at http://www.hp.com/support/ workstation_manuals. — View component installation videos at http://www.hp.com/go/sml. — See additional information on your workstation at http://www.hp.com/go/workstations. iii

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HP Z420 Workstation manual — page 4

iv About this guide

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Table of contents 1 Locating HP resources ....................................................................................................... 1 Product information .................................................................................................................. 2 Support ................................................................................................................................... 3 Product documentation ............................................................................................................. 4 Product diagnostics .................................................................................................................. 4 Product updates ....................................................................................................................... 5 2 Workstation features ........................................................................................................ 6 HP Z420 Workstation components ............................................................................................. 6 HP Z420 Workstation front panel ............................................................................... 6 HP Z420 Workstation rear panel ................................................................................ 7 HP Z620 Workstation components ............................................................................................. 8 HP Z620 Workstation front panel ............................................................................... 8 HP Z620 Workstation rear panel ................................................................................ 9 HP Z820 Workstation components ........................................................................................... 10 HP Z820 Workstation front panel ............................................................................. 10 HP Z820 Workstation rear panel .............................................................................. 11 Product specifications ............................................................................................................. 12 Workstation weights and dimensions ......................................................................... 12 Environmental specifications ..................................................................................... 13 3 Setting up the workstation ............................................................................................. 14 Ensuring proper ventilation ...................................................................................................... 14 Setup procedures ................................................................................................................... 16 Adding monitors .................................................................................................................... 17 Planning for additional monitors ................................................................................ 17 Finding supported graphics cards ............................................................................. 19 Matching graphics cards to monitor connectors .......................................................... 19 Identifying monitor connection requirements ............................................................... 20 Connecting and configuring monitors ........................................................................ 21 Using a third-party graphics configuration utility .......................................................... 22 Customizing the monitor display (Microsoft Windows) ................................................. 22 Converting to desktop configuration (Z420 only) ....................................................................... 23 Installing optional components ................................................................................................. 25 Security ................................................................................................................................ 25 Product recycling ................................................................................................................... 25 v

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HP Z420 Workstation manual — page 6

4 Setting up and restoring Microsoft Windows ................................................................... 26 Setting up the Microsoft operating system .................................................................................. 26 Installing or upgrading device drivers ........................................................................ 26 Transferring files and settings .................................................................................... 27 Restoring the operating system with HP Recovery Manager ......................................................... 27 5 Setting up and restoring Linux ........................................................................................ 28 HP Linux Support Matrix ......................................................................................................... 28 HP Installer Kit for Linux (HPIKL) ................................................................................................ 29 Setting up Red Hat Enterprise Linux .......................................................................................... 29 HPIKL driver CD ...................................................................................................... 30 Installing with the HP Red Hat Linux driver CD ............................................................ 30 Warranty ............................................................................................................... 30 Setting up SUSE Linux Enterprise Desktop (SLED) ........................................................................ 31 Setting up preloaded SLED ....................................................................................... 31 Installing SLED with the CD Installer Kit ...................................................................... 31 Warranty ............................................................................................................... 31 Restoring SLED (preloaded systems only) .................................................................... 32 Proprietary graphics drivers ..................................................................................................... 32 6 Diagnostics and Minor Troubleshooting ........................................................................... 33 Calling technical support ......................................................................................................... 33 Locating ID labels ................................................................................................................... 34 Locating warranty information ................................................................................................. 35 HP troubleshooting resources and tools ..................................................................................... 35 HP Support Assistant ................................................................................................ 35 E-support ................................................................................................................ 35 Troubleshooting a problem ........................................................................ 36 Instant Support and Active Chat ................................................................. 36 Customer Advisories, Customer and Security Bulletins, and Customer Notices .. 36 Product Change Notifications .................................................................... 36 Helpful hints ........................................................................................................... 37 At startup ................................................................................................ 37 During operation ...................................................................................... 37 Customer self-repair .................................................................................. 38 Other troubleshooting options .................................................................... 38 7 Routine Care ................................................................................................................... 39 General cleaning safety precautions ......................................................................................... 39 Cleaning the chassis ............................................................................................................... 39 vi

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HP Z420 Workstation manual — page 7

Cleaning the keyboard ........................................................................................................... 40 Cleaning the monitor .............................................................................................................. 40 Cleaning the mouse ................................................................................................................ 41 vii

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HP Z420 Workstation manual — page 9

1 Locating HP resources This section provides information on the following HP resources for your workstation: Topics Product information on page 2 ● Technical specifications ● HP Cool Tools ● Regulatory information ● Accessories ● System board ● Serial number and Certificate of Authenticity labels Support on page 3 ● Product support ● HP Support Assistant ● Warranty information Product documentation on page 4 ● HP and third-party documentation, white papers ● Product notifications ● Technical specifications (QuickSpecs) ● Customer Advisories, Security Bulletins, Notices Product diagnostics on page 4 ● Diagnostics tools ● Audible beeps and LED code definitions ● POST error codes Product updates on page 5 ● Driver and BIOS updates ● Operating systems 1

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Product information Table 1-1 Product information Topic Location Technical specifications Go to www.hp.com/go/quickspecs. In the left pane, select your region and then select Workstations. HP Cool Tools Most HP Microsoft Windows workstations are preloaded with tools that may enhance system performance and with additional software that is not automatically installed during first boot. To access these applications: ● Click the HP Cool Tools icon on the desktop, or ● Open the HP Cool Tools folder by selecting Start > All Programs > HP > HP Cool Tools. To learn more about these applications, click HP Cool Tools—Learn More. To install or launch the applications, click the appropriate application icon. Regulatory information Refer to the Safety & Regulatory Information guide for product Class information. You can also refer to the label on the workstation chassis. Accessories For complete and current information on supported accessories and components, see http://www.hp.com/go/workstations. System board A diagram of the system board is located on the inside of the side access panel (tower and desktop configurations) or on the inside of the chassis (all-in-one configurations). Additional information is located in the Maintenance and Service Guide on the Web at http://www.hp.com/support/workstation_manuals/. Serial number and Certificate of Authenticity (COA) labels (if applicable) Serial number labels are on the top or back panel (tower and desktop configurations) or on a pull-out card on the side of the display (all-in-one configuration). The COA label is typically located near the serial number label. Some workstations have this label on the bottom panel. Linux For information on running Linux on HP workstations, go to http://www.hp.com/ linux/, then select Linux on Workstations from the list on the left. 2 Chapter 1 Locating HP resources

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HP Z420 Workstation manual — page 11

Support Table 1-2 Support Topic Location Product support For U.S. support, go to http://www.hp.com/go/contactHP. For worldwide support, go to http://welcome.hp.com/country/us/en/wwcontact_us.html. Here you can: ● Chat online with an HP technician ● Obtain E-mail support ● Find support telephone numbers ● Locate an HP service center HP Support Assistant HP Support Assistant is an HP application that helps you maintain the performance of your workstation and resolve problems through automated updates and tune-ups, built-in diagnostics, and guided assistance. To access HP Support Assistant, double-click the HP Support Assistant icon on your desktop.

Note:

HP Support Assistant is pre-installed on all HP workstations running Microsoft Windows 7. HP Support Assistant is not available on workstations running Linux. Warranty information To locate base warranty information, see http://www.hp.com/support/warranty-lookuptool. To locate an existing Care Pack, see http://www.hp.com/go/lookuptool. To extend a standard product warranty, see http://h20219.www2.hp.com/services/us/en/warranty/ carepack-overview.html. HP Care Pack Services offer upgraded service levels to extend and expand a standard product warranty. For some countries/regions, a printed HP Limited Warranty is provided in the box. In countries/regions where the warranty is not provided in printed format, you may request a printed copy from www.hp.com/go/orderdocuments or write to: ● North America: Hewlett Packard, MS POD, 11311 Chinden Blvd, Boise, ID 83714, USA ● Europe, Middle East, Africa: Hewlett-Packard, POD, Via G. Di Vittorio, 9, 20063, Cernusco s/Naviglio (MI), Italy ● Asia Pacific: Hewlett-Packard, POD, P.O. Box 200, Alexandra Post Office, Singapore 911507 Please include your product number, warranty period (found on your serial number label), name and postal address. Support 3

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HP Z420 Workstation manual — page 12

Product documentation Table 1-3 Product documentation Topic Location HP user documentation, white papers, and third-party documentation For the latest online documentation, go tohttp://www.hp.com/support/ workstation_manuals. These include this User Guide and the Maintenance and Service Guide. Removal and replacement videos To learn how to remove and replace workstation components, go to http://www.hp.com/go/sml. Product notifications Subscriber's Choice is an HP program that allows you to sign up to receive driver and software alerts, proactive change notifications (PCNs), the HP newsletter, customer advisories, and more. Sign up at www.hp.com/united-states/subscribe/ gateway/?jumpid=go/subscribe-gate1. Customer advisories and product change notifications are also available on http://www.hp.com/go/bizsupport/. Technical specifications The Product Bulletin contains QuickSpecs for HP Workstations. QuickSpecs include information the operating system, power supply, memory, CPU, and many other system components. To access the QuickSpecs, see http://www.hp.com/go/ quickspecs/. Customer Advisories, Security Bulletins, and Notices To find advisories, bulletins, and notices:

  • See http://www.hp.com/go/workstationsupport.
  • Select the desired product.
  • From the Resources section, select See more…
  • Use the scroll bar to select Customer Advisories, Customer Bulletins, or
    • Customer Notices. Product diagnostics Table 1-4 Product diagnostics Topic Location Diagnostics tools The HP Vision Diagnostics utility is pre-installed on Windows 7 systems. To transfer it to an optical disc or USB flash drive, click Start > All Programs > HP Help & Support > HP Vision Diagnostics Disk Creation. Audible beep and LED code definitions Refer to the workstation Maintenance and Service Guide at http://www.hp.com/ support/workstation_manuals. POST error codes Refer to the workstation Maintenance and Service Guide at http://www.hp.com/ support/workstation_manuals. 4 Chapter 1 Locating HP resources

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    HP Z420 Workstation manual — page 13

    Product updates Table 1-5 Product updates Topic Location Driver and BIOS updates See http://www.hp.com/go/workstationsupport to verify that you have the latest drivers for the workstation. To determine the current workstation BIOS on your workstation, follow these steps during system power up:

  • Power on the workstation, and press Esc during boot up..
  • Press F10 to enter the F10 Setup utility.
  • Go to File > System Information. Note the BIOS version and date and
    • compare it with the BIOS versions that appear on the HP website. Alternatively, on Windows 7 systems you can:,You can also find the BIOS version under Windows 7 by going to All Programs > Accessories > System Tools > System Information > In the right pane, find the line with "BIOS Version/Date. Note the BIOS version and date and compare it with the versions that appear on the HP website.
  • Go to Start > All Programs > Accessories > System Tools > System
    • Information.
  • In the right pane, find the line with BIOS Version/Date.
  • Note the BIOS version and date and compare it with the versions that appear
    • on the HP website. Operating systems For additional information, on: ● Operating systems supported on HP workstations, go to http://www.hp.com/ go/wsos. ● Windows operating systems, go to http://www.microsoft.com/support. ● Linux operating systems, go to http://www.hp.com/linux. Product updates 5

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    HP Z420 Workstation manual — page 14

    2 Workstation features For complete and current information on supported accessories and components for your workstation, see http://partsurfer.hp.com. HP Z420 Workstation components HP Z420 Workstation front panel Figure 2-1 Front panel components Table 2-1 Component descriptions 1

    Optical drive 5 USB 3.0 ports (2, blue) 2 Power button 6 Headphone connector 3 Hard drive activity light 7 Microphone connector 4 USB 2.0 port (black) 8 IEEE–1394a FireWire connector 6 Chapter 2 Workstation features

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    HP Z420 Workstation manual — page 15

    HP Z420 Workstation rear panel Figure 2-2 Rear panel components Table 2-2 Component descriptions 1

    Power supply Built-In Self Test

    (Bist) Led

    9 Audio line-out connector (green) 2

    Universal chassis clamp opening 10 Microphone connector (pink) 3 PS/2 mouse connector (green) 11 AMT-enabled RJ-45 network connector (orange) 4 USB 2.0 ports (4, black) 12 USB 3.0 ports (2, blue) 5

    Security slot 13 IEEE-1394a FireWire connector (white) 6

    Padlock loop 14 PS/2 keyboard connector (purple) 7 Audio line-in connector (blue) 15 Rear power button 8

    Graphics card connector 16

    Power cord connector HP Z420 Workstation components 7

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    HP Z420 Workstation manual — page 16

    HP Z620 Workstation components HP Z620 Workstation front panel Figure 2-3 Front panel components Table 2-3 Component descriptions 1

    Optical drive 5 USB 3.0 ports (2, blue) 2 Power button 6 Headphone connector 3 Hard drive activity light 7 Microphone connector 4 USB 2.0 port (black) 8 IEEE–1394a FireWire connector 8 Chapter 2 Workstation features

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    HP Z420 Workstation manual — page 17

    HP Z620 Workstation rear panel Figure 2-4 Rear panel components Table 2-4 Component descriptions 1

    Power cord connector 8 Audio line-out connector (green) 2 PS/2 mouse connector (green) 9 Microphone connector (pink) 3 USB 2.0 ports (4, black) 10 USB 3.0 ports (2, blue) 4 RJ-45 network connectors (orange) Bottom connector is AMT enabled 11 IEEE-1394a FireWire connector (white) 5 Audio line-in connector (blue) 12 PS/2 keyboard connector (purple) 6

    Graphics card connector 13 Rear power button 7

    Security slot 14

    Power supply Built-In Self Test (BIST)

    Led

    HP Z620 Workstation components 9

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    HP Z420 Workstation manual — page 18

    HP Z820 Workstation components HP Z820 Workstation front panel Figure 2-5 Front panel components Table 2-5 Component descriptions 1

    Optical drive 5 USB 3.0 ports (2, blue) 2 Power button 6 Headphone connector 3 Hard drive activity light 7 Microphone connector 4 USB 2.0 port (black) 8 IEEE–1394a FireWire connector 10 Chapter 2 Workstation features

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    HP Z420 Workstation manual — page 19

    HP Z820 Workstation rear panel Figure 2-6 Rear panel components Table 2-6 Component descriptions 1

    Power cord connector 9 USB 3.0 ports (2, blue) 2 PS/2 mouse connector (green) 10 USB 2.0 ports (4, black) 3 Audio line-in connector (blue) 11 Audio line-out connector (green) 4 RJ-45 network connectors (2, orange) Top connector is AMT enabled 12 Microphone connector (pink) 5 IEEE-1394a FireWire connector (white) 13 PS/2 keyboard connector (purple) 6

    Security slot 14 Rear power button 7

    Graphics card connector(s) 15

    Power supply Built-In Self Test (BIST)

    Led

    8 Serial connector (teal blue)

    HP Z820 Workstation components 11

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    HP Z420 Workstation manual — page 20

    Product specifications Workstation weights and dimensions Characteristic HP Z420 Workstation HP Z620 Workstation HP Z820 Workstation Weight (standard configuration) 13.2 kg (29.2 lb) 17.9 kg (39.4 lb) 26.6 kg (58.7 lb) Weight (minimum configuration) 12.5 kg (27.5 lb) 15.5 kg (34.2 lb) 24.0 kg (52.9 lb) Weight (maximum configuration) 17.7 kg (39.4 lb) 22.6 kg (49.9 lb) 32.0 kg (70.5 lb) Chassis dimensions Minitower Height: 44.76 cm (17.62 in) Width: 17.78 cm (7.00 in) Depth: 44.50 cm (17.53 in) Converted desktop Height: 17.78 cm (7.00 in) Width: 44.76 cm (17.62 in) Depth: 44.50 cm (17.53 in) Height: 44.45 cm (17.50 in) Width: 17.15 cm (6.75 in) Depth: 46.48 cm (18.30 in) Height: 44.4 cm (17.5 in) Width: 20.3 cm (8.0 in) Depth: 52.5 cm (20.7 in) 12 Chapter 2 Workstation features

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    HP Z420 Workstation manual — page 21

    Environmental specifications Table 2-7 HP Workstation environmental specifications Characteristic HP Z420, 620, and 820 Workstations Temperature Operating: 5°C to 35°C (40°F to 95°F) Non-operating: -40°C to 60°C (-40°F to 140°F)

    Note:

    Derate by 1°C (1.8°F) for every 305 m (1,000 ft) altitude over 1,524 m (5,000 ft). Humidity Operating: 8% to 85% relative humidity, non-condensing Non-operating: 8% to 90% relative humidity, non-condensing Altitude Operating: 0 to 3,048 m (10,000 ft) Non-operating: 0 to 9,144 m (30,000 ft) Shock Operating: ½-sine: 40g, 2-3ms Non-operating: ● ½-sine: 160 cm/s, 2-3ms (~100g) ● square: 422 cm/s, 20g

    Note:

    Values represent individual shock events and do not indicate repetitive shock events. Vibration Operating Random: 0.5g (rms), 5-300 Hz Non-Operating: random: 2.0g (rms), 10-500 Hz

    Note:

    Values do not indicate continuous vibration. Product specifications 13

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    HP Z420 Workstation manual — page 22

    3 Setting up the workstation This chapter describes how to set up your workstation. Topics Ensuring proper ventilation on page 14 Setup procedures on page 16 Adding monitors on page 17 Ensuring proper ventilation Proper ventilation for the system is important for workstation operation. Follow these guidelines: ● Operate the workstation on a sturdy, level surface. ● Provide at least 15.24 cm (6 inches) of clearance at the front and back of the workstation. (Workstation models vary.) Figure 3-1 Proper workstation ventilation ● Ensure that the ambient air temperature falls within the environmental specifications listed in this document. 14 Chapter 3 Setting up the workstation

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    HP Z420 Workstation manual — page 23

    Note:

    The ambient upper limit of 35 C is only good up to 1524 m (5000 ft) elevation. There is a 1 C per 304.8 m (1000 ft) derating above 1524 m (5000 ft). So, at 3,048 m (10,000 ft), the upper ambient air temperature limit is 30 C. ● For cabinet installation, ensure adequate cabinet ventilation and ensure that the ambient temperature within the cabinet does not exceed specified limits. ● Never restrict the incoming or outgoing airflow of the workstation by blocking any vents or air intakes as shown in the following figure. Figure 3-2 Proper workstation placement Ensuring proper ventilation 15

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    HP Z420 Workstation manual — page 24

    Setup procedures

    Warning!

    To reduce the risk of electric shock or damage to your equipment, observe these practices:
  • Plug the power cord into an AC outlet that is easily accessible.
  • Disconnect power from the computer by unplugging the power cord from the AC outlet (not by
    • unplugging the power cord from the computer).
  • Plug the cord into a grounded (earthed) three-pin outlet. Do not disable the power cord grounding
    • pin (for example, by attaching a two-pin adapter). The grounding pin is an important safety feature.

    Note:

    An HP Z820 workstation with a 1125W power supply might require more power than the typical office environment can supply. For details, see the Site Preparation Guide for the workstation at http://www.hp.com/support/workstation_manuals. To set up the workstation:
  • Connect the mouse, keyboard, and power cord to the workstation.
  • Connect the monitor to the workstation.
  • Plug the workstation power cord and monitor power cord into an AC outlet.
  • Connect other peripheral components (such as a printer) according to the instructions included
    • with the device.
  • Connect an Ethernet cable to the computer and to a network router or LAN device.
    • Figure 3-3 Connecting the workstation 16 Chapter 3 Setting up the workstation

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    HP Z420 Workstation manual — page 25

    Adding monitors Planning for additional monitors All graphics cards provided with HP Z series workstations support two simultaneous display monitors (see Connecting and configuring monitors on page 21). Cards that support more than two monitors are available. The process for adding monitors depends on your graphics card(s) and the type and number of monitors you add. Use this process to plan for adding more monitors.

  • Assess your monitor needs:
    • ● Determine how many monitors you require. ● Determine the kind of graphics performance you want. ● Note the type of graphics connector used by each monitor. HP provides graphics cards with DisplayPort (DP) and DVI interfaces, but you can use adapters and third-party cards to interface to other graphics formats, including DVI-I, HDMI, or VGA.

    Tip:

    Some adapters for older legacy hardware may cost more than others. You may want to compare the cost of acquiring adapters with the cost of getting a newer monitor that doesn't need adapters.
  • Determine if you need additional graphics cards:
    • ● Consult the graphics card documentation to determine how many monitors you can connect to the card. You may need to acquire adapters to match the card output to the monitor connector. (See Matching graphics cards to monitor connectors on page 19.) ● If necessary, plan to acquire a new graphics card to drive additional monitors. ● The maximum number of monitors that a graphics card supports depends on the card. Most cards provide outputs for two monitors. Some provide four outputs. Adding monitors 17

    Page 26
    HP Z420 Workstation manual — page 26

    Note:

    Monitors with resolutions above 1920 x 1200 pixels at 60 Hz require a graphics card with either Dual Link DVI (DL-DVI) or DisplayPort output. To get native resolution with DVI, however, you must use a DL-DVI cable, not standard DVI-I or DVI-D cables. HP computers do not support all graphics cards. Make sure a new graphics card is supported before purchasing it.See Finding supported graphics cards on page 19. Many graphics cards provide more than two monitor outputs but limit you to using only two at a time. Consult the graphics card documentation or look up information on the card according to the procedure in Finding supported graphics cards on page 19. Some graphics cards support multiple monitors by multiplexing the monitor signal across multiple outputs. This may reduce graphics performance. Consult the graphics card documentation or look up information on the card according to the procedure in Finding supported graphics cards on page 19. Make sure the card outputs match the input required by the monitors. (See Identifying monitor connection requirements on page 20.) The different models of Z-series workstations have different limits on the mechanical size, data speed, and power available for additional graphics cards. In addition, the usual practical limit for graphics cards is two per computer. Refer to the Manufacturing and Service Guide for expansion card slot identification to make sure a new graphics card will work for your computer.
  • If you want to add a new graphics card or cards:
    • a. Determine which HP-supported graphics card will best fit your needs in terms of number of monitors, compatibility with the monitors you plan to use, and performance. See Finding supported graphics cards on page 19. b. Make sure you have the correct drivers for the card. c. Install the graphic card according to the video instructions for your workstation at http://www.hp.com/go/sml. d. Configure the monitor. For details, refer to Microsoft Help or to http://www.microsoft.com, or to your Linux Help or website.

    Tip:

    To simplify troubleshooting of possible problems, enable the monitors one at a time: enable the first monitor and make sure it works properly before enabling the next monitor. 18 Chapter 3 Setting up the workstation

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    HP Z420 Workstation manual — page 27

    Finding supported graphics cards To find information about graphics cards supported for your workstation:

  • Go to http://www.hp.com/go/quickspecs.
  • In the left navigation bar under QuickSpecs, click on your country, then select Workstations.
  • Choose your model to view the specifications.
  • Click on the link for Technical Specifications-Graphics. This displays expanded technical
    • information for supported graphics cards, including how many monitors the card supports, connectors, power consumption, drivers, and other details. Matching graphics cards to monitor connectors The following table describes monitor configuration scenarios. Graphics card interface connector Monitor connector

    Vga

    Dvi

    Dual Link

    Dvi

    DisplayPort

    (Dp)

    Hdmi

    Displayport

    DisplayPort to VGA adapter (sold separately) DP to DVI adapter DP to DL DVI adapter DP cable DP to HDMI adapter

    Dvi (White)

    DVI to VGA adapter or DVI- I cable DVI-D cable DL DVI cable

    N/A

    N/A

    Vga (Blue)

    No adapter required DVI-I cable

    N/A

    N/A

    N/A

    Dms-59*

    DMS-59 to VGA adapter DMS-59 to DVI adapter

    N/A

    DMS-59 to DP adapter

    N/A

  • This interface is a dual-monitor graphics interface card that supports two VGA or two DVI monitors.

    • Note:

    HP graphics cards include monitor cable adapters unless otherwise indicated. DisplayPort cards have the highest performance; VGA graphics cards have the lowest. Adding monitors 19

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    HP Z420 Workstation manual — page 28

    Identifying monitor connection requirements The following are various scenarios for connecting monitors. (See Matching graphics cards to monitor connectors on page 19 for more information about the different graphic cards): ● Graphics card with DisplayPort output — If the graphics card has four DisplayPort outputs, you can connect a monitor to each connector. Use the proper adapters if required. ● Graphics card with DVI output — If you have a PCIe graphics card with two DVI outputs, you can connect a monitor to each connector. Use the proper adapters if required.

    Note:

    Models that have only one DVI port always have a second graphics output option (Display Port or VGA). Many graphics cards provide more than two monitor outputs but limit you to using only two at a time. Consult the graphics card documentation or look up information on the card according to the procedure in Finding supported graphics cards on page 19. On a system with two DVI connections, port number 1 provides the primary display, which is where the BIOS POST screen appears after a system boot. (Usually this is the lower of the two outputs. Only one card is used during BIOS POST, although you can change this in the BIOS settings.) ● Graphics card with VGA and DL-DVI output — If the workstation does not have a PCIe graphics card, but has one or more SVGA and/or DL-DVI outputs, you can connect a monitor to each output. ● Graphics card with DMS-59 output — If the workstation has a PCIe graphics card with a DMS-59 output receptacle, use the appropriate adapter to connect your monitor. Adapters are available to connect the DMS-59 output to two DVI or two VGA monitors. 20 Chapter 3 Setting up the workstation

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    HP Z420 Workstation manual — page 29

    Connecting and configuring monitors

    Note:

    HP-supported graphics card typically allow at least two monitors, as shown in this section; some supported cards allow more monitors. Refer to the graphics card documentation for details.
  • Connect the monitor cable adapters (1) (if required) to the workstation, then connect the
    • appropriate monitor cables to the adapters (2) or directly to the graphics card. Figure 3-4 Connecting the cables to the workstation
  • Connect the other ends of the graphics cables to the monitors.
    • Figure 3-5 Connecting cables to the monitors
  • Connect one end of the monitor power cord to the monitor and the other end to a grounded
    • power outlet.
  • Configure the monitor. For details, refer to Microsoft Help or to http://www.microsoft.com, or to
    • your Linux Help or website. Adding monitors 21

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    HP Z420 Workstation manual — page 30

    Using a third-party graphics configuration utility Third-party graphics cards may include a monitor configuration utility. Upon installation, this utility is integrated into Windows. You can select the utility and use it to configure multiple monitors with your workstation. Refer to your graphics card documentation for details.

    Note:

    Some third-party configuration utilities require that you enable the monitors in Windows before using the configuration tool. Refer to your graphics card documentation for more information.

    Note:

    Monitor configuration utilities are also often available on the HP support website. Customizing the monitor display (Microsoft Windows) You can manually select or change the monitor model, refresh rates, screen resolution, color settings, font sizes, and power management settings. To change display settings, right-click on the Windows Desktop, then click Screen Resolution. For more information about customizing your monitor display, refer to: ● Online documentation provided with the graphics controller utility ● Documentation included with your monitor 22 Chapter 3 Setting up the workstation

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    HP Z420 Workstation manual — page 31

    Converting to desktop configuration (Z420 only) This workstation can be operated in mini-tower or desktop configuration. Follow these steps to convert to desktop configuration:

    Note:

    See a video of this task at http://www.hp.com/go/sml.
  • Prepare the workstation for component installation.
  • Remove the front bezel from the workstation.
  • Press gently on the edges of the optical drive bay filler panel and remove it from the front bezel.
    • Figure 3-6 Removing the ODD bay filler panel
  • Rotate the filler panel 90 degrees to a horizontal position.
  • Align the slots in the filler panel frame with the tabs in the front bezel. Press the optical drive filler
    • panel back into the front bezel until it snaps into place. Figure 3-7 Installing the ODD bay filler panel Converting to desktop configuration (Z420 only) 23

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    HP Z420 Workstation manual — page 32

  • On the back of the front bezel, squeeze the HP logo mounting tabs (1) and press the logo outward
    • (2). Figure 3-8 Rotating the HP logo Rotate the HP logo 90 degrees counterclockwise, then release the logo and press it back into place.
  • Remove the EMI filler panels and optical disk drive from the chassis.
  • Rotate the EMI filler panels and optical drive 90 degrees, then reinstall them.
    • Figure 3-9 Reinstalling the optical drive
  • Replace the front bezel and the side access panel.
    • 24 Chapter 3 Setting up the workstation

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    HP Z420 Workstation manual — page 33

    Installing optional components Depending on the workstation model, additional components (such as memory, hard drives, optical drives, PCIe cards, or second processor) can be installed on your workstation. ● To view component installation videos, go to http://www.hp.com/go/sml. ● For installation guidelines and technical information, refer to the Maintenance and Service Guide for your workstation at http://www.hp.com/support/workstation_manuals. Security Some HP workstations have a lock on the side access panel. The key for this lock is shipped attached to the back panel of the workstation chassis. Additional security features to reduce the risk of theft and to warn of chassis intrusion. Refer to the Manufacturing and Service Guide at http://www.hp.com/support/workstation_manuals for information about additional hardware and software security features available for your system. Product recycling HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For information about recycling HP components or products, see http://www.hp.com/go/recycle. Installing optional components 25

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    HP Z420 Workstation manual — page 34

    4 Setting up and restoring Microsoft Windows This chapter provides setup and update information for the Microsoft Windows operating system. It includes these topics: Topics Setting up the Microsoft operating system on page 26 Restoring the operating system with HP Recovery Manager on page 27

    Note:

    After you set up the operation system, you should make sure the latest BIOS, drivers, and software updates are installed on the workstation. Refer to the chapter on updating the workstation.

    Caution:

    Do not add optional hardware or third-party devices to the HP workstation until the operating system is successfully installed. Adding hardware might cause errors and prevent the operating system from installing correctly. Setting up the Microsoft operating system Your workstation shipped with the Microsoft Windows 7 operating system (OS). The operating system installs when you power up the workstation for the first time. This process takes approximately 5 to 10 minutes. Carefully follow the on-screen instructions to complete the installation.

    Caution:

    After installation has started, do not turn off the workstation until the process is complete. Turning off the workstation during installation can damage the installation and operation of the software. For complete installation and configuration instructions, go to http://windows.microsoft.com/en-US/ windows7/help. Additional information is available in the online help tool after you successfully install the operating system. Installing or upgrading device drivers You must install the appropriate device drivers before you install hardware devices. Follow the installation instructions that came with the device. For optimum performance, your operating system must have the most recent updates, patches, and software fixes. For additional driver and software update information, refer to the chapter on updating the workstation. 26 Chapter 4 Setting up and restoring Microsoft Windows

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    HP Z420 Workstation manual — page 35

    Transferring files and settings The Microsoft Windows operating system offers data migration tools that help you select and transfer files and data from one Microsoft Windows-based computer to another. For information on these tools, go to http://www.microsoft.com. Restoring the operating system with HP Recovery Manager The Microsoft Windows 7 operating system can be reinstalled using HP Recovery Manager, a tool that reinstalls the Windows operating system and device drivers (for devices included with the system) to a near-factory state. If you ordered HP Recovery Manager with your workstation, the restore media is included with your workstation components. If you did not order it, call HP support and request an HP Recovery Manager media kit.

    Caution:

    Restoring the operating system does not restore data. Before you restore the operating system, back up your data using the method and media of your choice. The HP Recovery Manager process deletes all information on the primary hard drive, including all partitions. To restore Windows 7:
  • Boot from disc 1 of the HP Recovery Manager set.
  • Follow the prompts to restore your operating system.
    • Some applications might not be restored using this process. If an application is not restored, install it with the appropriate installation media.

    Note:

    Microsoft Windows 7 also provides a backup and restore application. To learn more, go to http://www.microsoft.com. Restoring the operating system with HP Recovery Manager 27

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    HP Z420 Workstation manual — page 36

    5 Setting up and restoring Linux HP offers a variety of Linux solutions for HP workstation customers: ● HP certifies and supports Red Hat Enterprise Linux (RHEL) on HP workstations. ● HP certifies and supports SUSE® Linux Enterprise Desktop (SLED) on HP workstations. ● HP offers a SLED 11 preload on some Z series workstations. This chapter describes how to set up and restore the Linux® operating system. It includes these topics: Topics HP Installer Kit for Linux (HPIKL) on page 29 Setting up Red Hat Enterprise Linux on page 29 Setting up SUSE Linux Enterprise Desktop (SLED) on page 31 Proprietary graphics drivers on page 32

    Note:

    After you set up the operating system, make sure the latest BIOS, drivers, and software updates are installed. Refer to the chapter on updating the workstation.

    Caution:

    Do not add optional hardware or third-party devices to the workstation until the operating system is successfully installed. Adding hardware might cause errors and prevent the operating system from installing correctly. HP Linux Support Matrix Not all release streams are supported on particular platforms. To find out which streams are supported on your workstation. refer to the Linux certification and support matrix:
  • Go to http://www.hp.com/linux.
  • In the Platforms tab, select HP Workstations.
  • Select Certification Matrix.
  • Go to the Red Hat or SUSE tab.
    • 28 Chapter 5 Setting up and restoring Linux

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    HP Z420 Workstation manual — page 37

    HP Installer Kit for Linux (HPIKL) The HP Installer Kit for Linux helps users install certified versions of RHEL or SLED on HP workstations. It is available as an operating system option on all HP workstations. The kit: ● Contains tested drivers that augment and/or replace those found in RHEL or SLED to enable proper use and behavior on HP workstations. ● Does not include Linux operating system, which must be purchased separately from Red Hat or SUSE. To view supported configurations and operating systems, go to http://www.hp.com/ support/linux_hardware_matrix. The HPIKL option includes a FreeDOS preload. This operating system option accommodates those who have a customized Linux distribution, or who have a licensed version of RHEL or SLED and would like to install the HP-recommended driver additions. The kit also can be downloaded:

  • Go to http://www.hp.com/support/workstation_swdrivers.
  • Select your workstation model.
  • Select the desired operating system.
  • Select your software/driver language, then click the Software quick jump link.
  • Click the Obtain Software link for the appropriate package (typically the most recent revision).
  • Click I Agree to accept the terms of the license agreement.
  • Download the software ISO image and save it on a disk. This disk is your HP driver CD.
    • Setting up Red Hat Enterprise Linux HP Z series workstations are certified and supported on RHEL streams appropriate to the hardware technology. ● For details of RHEL support for a particular platform, see the Hardware Support Matrix for HP Linux Workstations at http://www.hp.com/support/linux_hardware_matrix. ● For information about Red Hat certifications on HP workstations, go to https://hardware.redhat.com. HP Installer Kit for Linux (HPIKL) 29

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    HP Z420 Workstation manual — page 38

    HPIKL driver CD Recent versions of Red Hat Linux typically require only driver updates with minor fixes to support HP workstations. These releases can usually be supported with the HPIKL driver CD, which can be used as a post-installation utility for the standard Red Hat Linux install. After you complete the standard Red Hat install and restart the system, a Red Hat first-boot utility runs. After you specify a number of settings (such as the security level, time and date, root password, user accounts), the utility lets you to load additional CDs. The driver CD is used during this phase. All content added by HP is in the /HP directory on the CD. You can use it to build your own image or to browse the HP content.

    Note:

    Some installations may encounter problems if they are performed with a DisplayPort connection to the monitor. This is because the default drivers that the OS installers use do not support DisplayPort functionality. If you experience problems, try overriding the monitor choice for DisplayPort during the start of the install and using the VESA driver instead. You can then set up the DisplayPort monitor later. Installing with the HP Red Hat Linux driver CD
  • If you do not have the appropriate HP driver CD for a supported stream, create one (see HP
    • Installer Kit for Linux (HPIKL) on page 29.
  • Install the operating system using the optical media included in the Red Hat Linux box-set.
  • If you have a Red Hat driver disk for the OS version you are installing, enter linux dd on the
    • initial install splash screen, and then press Enter.
  • When asked if you have a driver CD, select Yes. Place the Red Hat driver disk in the drive, and
    • select the appropriate drive:hd[abcd]. Continue the normal installation.
  • After successfully installing the operating system, reboot the workstation.
    • ● RHEL 5: the Red Hat Setup Agent (also known as first-boot) automatically starts. At the Additional CDs screen, insert your HP driver CD and select Install. When the driver installation task is completed, continue following the prompts until the operating system is successfully installed. ● RHEL 6: Insert your HP driver CD. The HPIKL installation software automatically starts. Follow the prompts to install the contents. Warranty As part of the HP workstation hardware warranty, HP provides software configuration and installation support for certified versions of Red Hat Linux for up to 90 days from date of purchase. 30 Chapter 5 Setting up and restoring Linux

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    HP Z420 Workstation manual — page 39

    Setting up SUSE Linux Enterprise Desktop (SLED) HP offers a 64-bit SLED 11 preload on some Z series workstations and supports 64-bit SLED 11 on other workstations. Various versions of SLED are certified and supported by Novell on HP workstations. For more information, refer to the Novell certification bulletin search page at http://developer.novell.com/ yessearch. Setting up preloaded SLED To set up SLED on systems preloaded with the operating system:

  • Start the workstation.
  • When prompted, enter the workstation installation settings: password, network, graphics, time,
    • keyboard settings, and SUSE Customer Center Configuration.

    Note:

    You can activate your SUSE subscription from the SUSE Customer Center Configuration screen. To view the full SUSE Customer Center documentation, go to http://www.suse.com/ documentation and select your operating system. Installing SLED with the CD Installer Kit
  • If an HP driver CD did not come with your workstation, create one (see HP Installer Kit for Linux
    • (HPIKL) on page 29.
  • Install the operating system using the CDs or DVDs included in the SUSE box-set.
  • After successfully installing the operating system, reboot the workstation.
  • Insert your HP driver CD. The HPIKL installation software automatically starts. Follow the prompts to
    • install the contents. Warranty HP provides configuration and installation support for SLED 11 on Z series workstations for up to 90 days from date of purchase. Novell also provides support for all versions of SLED that are certified on HP workstations. Setting up SUSE Linux Enterprise Desktop (SLED) 31

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    HP Z420 Workstation manual — page 40

    Restoring SLED (preloaded systems only) The SLED restore media is required to restore the Linux operating system. To create restore media:

  • Click the SUSE ISO icon on the desktop to go to the /iso folder. This folder contains all iso images
    • used to preload your workstation.
  • Follow the instructions in the readme file in this folder to copy the ISO image file onto optical
    • media.
  • Store the media in a safe place. If your workstation experiences a hard drive failure, use the ISO
    • recovery images tor restore your operating system.

    Caution:

    Restoring the operating system does not restore data. Back up your data using the method and media of your choice. Proprietary graphics drivers Most HP workstations can be ordered with graphics cards that have been through extensive verification by HP. See the Hardware Support Matrix for HP Linux Workstations at http://www.hp.com/support/ linux_hardware_matrix for a list of supported cards.

    Note:

    Not all graphics cards are available on every workstation. Limitations generally occur for cards that consume large amounts of power in lower-power workstations. Proprietary graphics drivers supported by HP and the graphics vendors are available with the HP Installer Kit for Linux, with the SLED 11 preload on Z series workstations, and from HP Workstation Support at http://www.hp.com/go/workstationsupport. These proprietary drivers are not a standard part of the RHEL or SLED distributions because they are not open source. Driver revisions more recent than those at the HP support website are supported directly by the vendor. 32 Chapter 5 Setting up and restoring Linux

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    HP Z420 Workstation manual — page 41

    6 Diagnostics and Minor Troubleshooting Calling technical support At times you might encounter an issue that requires technical support. When you call technical support: ● Have the computer readily accessible. ● Write down the computer serial numbers, product numbers, model names, and model numbers and have them in front of you. ● Note any applicable error messages. ● Note any add-on options. ● Note the operating system. ● Note any third-party hardware or software. ● Note the details of any blinking LEDs on the front of the computer (tower and desktop configurations) or on the side of the computer (all-in-one configurations). ● Note the applications you were using when you encountered the problem.

    Note:

    When calling in for service or support, you might be asked for the Product Number (example: PS988AV) of the computer. If the computer has a Product Number, it is generally located next to the 10- or 12-digit Serial Number of the computer.

    Note:

    On most models, the serial number and product number labels can be found on the top or side panel and at the rear of the computer (tower and desktop configurations) or on a pull-out card on the side of the display (all-in-one configurations). For a listing of all worldwide technical support phone numbers, go to http://www.hp.com/support, select your region, and click Connect with HP in the upper-right corner. Calling technical support 33

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    HP Z420 Workstation manual — page 42

    Locating ID labels To assist in troubleshooting, product, serial, and authentication numbers are available on each computer. ● All workstations have a serial number (unique for each workstation) and product number. Have these numbers available when you contact support. ● The Certificate of Authentication (COA) is used for Windows-preinstalled systems only. ● A Service label shows the Build ID and FeatureByte strings, which are needed for system board replacement. In general, these labels can be found in these locations (your computer may look different): ● On the top, rear or bottom of the chassis (tower and desktop configuration) ● On a pull-out card on the side of the display (all-in-one configuration) Figure 6-1 Tower and desktop label locations Figure 6-2 All-in-one label locations 34 Chapter 6 Diagnostics and Minor Troubleshooting

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    HP Z420 Workstation manual — page 43

    Locating warranty information To locate base warranty information, see http://www.hp.com/support/warranty-lookuptool. To locate an existing Care Pack, see http://www.hp.com/go/lookuptool. To extend a standard product warranty, visit http://www.hp.com/hps/carepack. HP Care Pack Services offer upgraded service levels to extend and expand a standard product warranty. HP troubleshooting resources and tools This section provides information on the HP Help and Support Center, E-support, and Helpful Hints for troubleshooting. HP Support Assistant HP Support Assistant (Windows 7 systems only) helps you maintain workstation performance and resolve problems. HPSA provides automated updates, onboard diagnostics, product information, and guided assistance to help maintain optimum workstation performance. To access HPSA, click Start > All Programs > HP Help and Support > HP Support Assistant.

    Note:

    HP Support Assistant is not available on Linux. E-support Online access and support resources include Web-based troubleshooting tools, technical knowledge databases, driver and patch downloads, online communities, and product change notification services. The following Web sites are also available to you: ● http://www.hp.com—Provides useful product information. ● http://www.hp.com/support/workstation_manuals—Provides the latest online documentation. ● http://www.hp.com/go/workstationsupport—Provides technical support information for workstations. ● http://www.hp.com/support—Provides a listing of the worldwide technical support phone numbers. Access the telephone numbers by visiting the Web site, then select your region, and click Contact HP in the upper-left corner. ● http://www.hp.com/support/workstation_swdrivers—Provides access to software and drivers for workstations. Locating warranty information 35

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    HP Z420 Workstation manual — page 44

    Troubleshooting a problem To help you troubleshoot problems with your system, HP provides the Business Support Center (BSC). The BSC is a portal to an extensive selection of online tools. To access BSC and troubleshoot a problem with the workstation, complete the following:

  • Visit http://www.hp.com/go/workstationsupport.
  • Under the Business Support Center menu on the left, select Troubleshoot a problem.
  • Under Select your product (center window), select Workstations (under personal
    • computing).
  • Under Select your product, continue with selections as appropriate to the workstation series
    • and model, and to the problem you are troubleshooting. Instant Support and Active Chat HP Instant Support is a set of Web-based support tools that automate and speed up the resolution of desktop computing, tape storage, and printing problems. Active Chat enables you to electronically submit a support ticket to HP over the Web. When you submit a support ticket, Active Chat collects information about the computer and pass it to an online support specialist. The collection of information might take up to 30 seconds depending on the computer configuration. When you submit a support ticket, you receive a confirmation message containing your case ID, the support hours for your location, and the estimated time of response. For more information about HP Instant Support and Active Chat and how to use them, go to http://instantsupport.hp.com/.

    Note:

    This feature is not available on Linux. Customer Advisories, Customer and Security Bulletins, and Customer Notices To find advisories, bulletins, and notices:
  • Visit http://www.hp.com/go/workstationsupport.
  • Select the desired product.
  • Under Resources for , select See more….
  • Under Self-Help resources: in the center of the window, choose the desired action and
    • appropriate information in the scroll list to view the index. Product Change Notifications Product Change Notifications (PCNs) are proactive notifications for product changes occurring within a 30-60 day window of the effective date of the change in the manufacturing process. PCNs give customers advanced notice of changes to their product, such as an updated BIOS version that they may need to qualify prior to the change taking place. The latest PCNs are located at: http://www.hp.com/ go/workstationsupport. 36 Chapter 6 Diagnostics and Minor Troubleshooting

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    HP Z420 Workstation manual — page 45

    Helpful hints If you encounter a problem with the workstation, monitor, or software, the following general suggestions might help you isolate and focus on the problem before taking further action. At startup ● Verify that the workstation and monitor are plugged into a working electrical outlet. ● Remove all optical discs and USB drive keys from the drives before powering on the workstation. ● Verify that the workstation is turned on and the power light is on. ● If you have installed an operating system other than the factory-installed operating system, check to be sure that it is supported on your system by visiting http://www.hp.com/go/quickspecs. ● Verify that the monitor is turned on and the green monitor light is on. ● Turn up the brightness and contrast controls of the monitor if the monitor is dim. ● If the workstation has multiple video sources and only a single monitor, the monitor must be connected to the source selected as the primary VGA adapter. During startup, the other monitor connectors are disabled; if the monitor is connected to one of these ports, it will not function after Power-on Self Test (POST). You can select the default VGA source in Computer Setup (F10). During operation ● Look for blinking LEDs on the workstation. The blinking lights are error codes that will help you diagnose the problem. Refer to the Diagnostic lights and audible (beep) codes section in the Maintenance and Service Guide for your workstation for information on interpreting diagnostic lights and audible codes. ● Press and hold any key. If the system beeps, then your keyboard is operating correctly. ● Check all cables for loose or incorrect connections. ● Wake the workstation by pressing any key on the keyboard or the power button. If the system remains in suspend mode, shut down the system by pressing and holding the power button for at least four seconds, then press the power button again to restart the system. If the system does not shut down, unplug the power cord, wait a few seconds, then plug it in again. If it does not restart, press the power button to start the workstation. ● Reconfigure the workstation after installing a non–plug and play expansion board or other option. Refer to the Hardware installation problems section of this document for instructions. ● Be sure that all required device drivers have been installed. For example, if you have connected a printer, you must install a printer driver. ● If you are working on a network, plug another workstation with a different cable into the network connection. There might be a problem with the network plug or cable. ● If you recently added new hardware, remove the hardware and verify if the workstation functions properly. ● If you recently installed new software, uninstall the software and verify if the workstation functions properly. HP troubleshooting resources and tools 37

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    HP Z420 Workstation manual — page 46

    ● If the monitor connected to a tower, desktop or all-in-one computer is blank: ◦ Plug the monitor into a different video port on the computer if one is available. Alternatively, replace the monitor with a monitor that you know is working properly. ◦ Verify that the computer and monitor are plugged into a working electrical outlet. ◦ Verify that the monitor is turned on and the green monitor light is on. ◦ Turn up the brightness and contrast controls of the monitor if the monitor is dim. ● If the internal display on an all-in-one computer is blank, open the computer and make sure the graphics card is properly installed. ● Upgrade the BIOS. A new release of the BIOS might have been released that supports new features or fixes your problem. ● For more detailed information, see the troubleshooting chapter in the Maintenance and Service Guide at http://www.hp.com/support/workstation_manuals. Customer self-repair Under the Customer Self-Repair program, you can order a replacement part and install the part without onsite HP technical assistance. Customer self-repair may be required for some components. See http://www.hp.com/go/selfrepair for information on the program.

    Note:

    Some components are not eligible for customer self-repair and must be returned to HP for service. Call HP Support for further instructions before attempting to remove or repair these components. Other troubleshooting options The following additional troubleshooting techniques and tools are located in the Maintenance and Service Guide at http://www.hp.com/support/workstation_manuals: ● POST Error Codes ● Diagnostic LEDs and audible beep codes ● Troubleshooting scenarios and solutions ● HP Vision Field Diagnostics 38 Chapter 6 Diagnostics and Minor Troubleshooting

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    HP Z420 Workstation manual — page 47

    7 Routine Care General cleaning safety precautions ● Never use solvents or flammable solutions to clean the computer. ● Never immerse any component in water or cleaning solutions; apply any liquids to a clean cloth and then use the cloth on the component. ● Always unplug the computer before cleaning the keyboard, mouse, or air vents. ● Always disconnect the keyboard before cleaning it. ● Wear safety glasses equipped with side shields when cleaning the keyboard. Cleaning the chassis ● Follow the safety precautions in the Maintenance and Service Guide for your workstation before cleaning the computer. ● To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab. ● For stronger stains, use a mild dish washing liquid diluted with water. Rinse well by wiping it with a cloth or swab dampened with clear water. ● For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is required because the alcohol evaporates quickly and does not leave a residue. ● After cleaning, always wipe the computer 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. General cleaning safety precautions 39

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    Cleaning the keyboard

    Caution:

    Use safety glasses equipped with side shields before attempting to clean debris from under the keys. ● If the keyboard has an on/off switch, turn it off. ● Follow the safety precautions in the Maintenance and Service Guide for your workstation before cleaning the computer. ● Visible debris underneath or between the keys can be removed by vacuuming or shaking. ● Canned, pressurized air can be used to clean debris from under the keys. Use caution because too much air pressure can dislodge lubricants applied under the wide keys. ● If you remove a key, use a specially designed key remover to prevent damage to the keys. This tool is available from many electronic supply outlets.

    Caution:

    Never remove a wide key (like the space bar key) from the keyboard. If these keys are improperly removed or installed, the keyboard might not function properly. ● Clean under a key with a swab moistened with isopropyl alcohol and squeezed out. Be careful not to wipe away lubricants necessary for proper key functions. Allow the parts to air dry before reassembly. ● Use tweezers to remove any fibers or dirt in confined areas. Cleaning the monitor ● Follow the safety precautions in the Maintenance and Service Guide for your workstation before cleaning the computer. ● To clean the monitor, wipe the monitor screen with a towelette designed for cleaning monitors or a clean cloth moistened with water.

    Caution:

    Do not use sprays or aerosols directly on the screen—the liquid might seep into the housing and damage a component. Never use solvents or flammable liquids on the monitor because display or housing damage may result. 40 Chapter 7 Routine Care

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    HP Z420 Workstation manual — page 49

    Cleaning the mouse

  • Follow the safety precautions in the Maintenance and Service Guide for your workstation before
    • cleaning the computer.
  • If the mouse has an on/off switch, turn it off.
  • Wipe the body of the mouse with a damp cloth.
  • If the mouse has a:
    • ● Laser or LED: use a cotton swab dampened with cleaning solution to gently brush out any dust around the laser or LED, then wipe again with a dry swab. Do not wipe the laser or LED directly with the swab. ● Scroll wheel: spray canned, pressurized air in the gap between the scroll wheel and the click buttons. Do not blow air directly on one spot for very long or condensation can form. ● Roller ball: remove and clean the roller ball, remove any debris from the ball socket, wipe out the socket with a dry cloth, and reassemble the mouse. Cleaning the mouse 41

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