HP Z800 Owners Manual

							Setting the Side access panel sensor protection level
To set the Side access panel sensor protection level:
1.Power on or restart the workstation.
2.As soon as the workstation is powered on, press and hold the F10 key until you enter the Computer
Setup (F10) Utility. Press Enter to bypass the title screen, if necessary.
NOTE:If you do not press the F10 key at the appropriate time, you must restart the workstation,
and then press and hold the F10 key again to access the Computer Setup (F10) Utility.
If you are using a PS/2 keyboard, you might see a keyboard error message. Disregard it.
3.Select Security>Smart Cover>Cover Removal Sensor, and follow the onscreen instructions.
4.Before exiting, select File>Save Changes and Exit.
Cable lock (optional)
To prevent theft, the rear chassis panel of the workstation accommodates a keyed cable lock. This cable
lock attaches to the chassis and secures it to the work area. (See 
Rear panel components on page 6
for component locations.)
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							Fault notification and recovery
Fault notification and recovery features combine innovative hardware and software technology to
prevent the loss of critical data and minimize unplanned downtime.
If the workstation is connected to a network that is managed by HP CMS, the workstation sends a fault
notice to the network management application. With HP CMS, you can also remotely schedule
diagnostics to run on managed PCs and create a summary report of failed tests.
Drive Protection System
The Drive Protection System (DPS) is a diagnostic tool built into hard disk drives and is installed in select
HP workstations. The DPS helps diagnose problems that might result in unwarranted hard disk drive
replacement.
When HP workstations are built, each installed hard disk drive is tested using the DPS, and a permanent
record of key information is written onto each drive. Every time the DPS is run, test results are written
to the hard disk drive. The service provider can use this information to help diagnose conditions that
required you to run the DPS software.
ECC fault prediction
When the workstation encounters an excessive number of error checking and correcting (ECC) memory
errors, it displays a local alert message. This message contains information about the errant DIMM,
enabling you to take action before you experience noncorrectable memory errors. ECC DIMMs are
standard on this workstation.
Thermal sensors
Several thermal sensors in the HP Workstation regulate workstation fans to maintain an acceptable,
efficient chassis temperature.
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							Dual-state power button
With ACPI enabled, the power button can function as an on/off switch or as a sleep state button. This
feature does not completely turn off power, but instead causes the workstation to enter a low-power
standby state. This enables you to go to standby without closing applications, and to return to the same
operational state without any data loss.
Changing the power button configuration
To change the power button configuration:
1.Select Start, and then select Control Panel>Power Options.
2.In Power Options Properties, select the Advanced tab.
3.In the Power Button section, select Hibernate. 
NOTE:Hibernate must be enabled in the Hibernate tab.
After configuring the power button to function as a sleep state button, you can press the power button
to put the workstation in a very low power state. Press the button again to bring the workstation out of
this low power state to full power state. To completely turn off power to the workstation, press and hold
the power button for four seconds.
CAUTION:Do not use the power button to power off the workstation unless the system is not
responding; turning off the power without operating system interaction can cause data loss.
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							5 Replacing components
This chapter presents removal and installation procedures for most internal workstation components. It
includes these topics:
Topics
Warnings and cautions on page 63
Service considerations on page 64
Customer self-repair on page 68
Removing and installing components on page 69
Product recycling on page 163
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							Warnings and cautions
WARNING! Any surface or area of the equipment marked with this symbol indicates the presence
of a hot surface or hot component. If this surface is contacted, the potential for injury exists. To reduce
the risk of injury from a hot component, enable the surface to cool before touching.
WARNING! Any surface or area of the equipment marked with this symbol indicates the presence
of an electrical shock hazard. To reduce the risk of injury from electrical shock, do not open any enclosed
area marked with this symbol.
WARNING!To reduce the risk of electric shock or damage to your equipment:
— Do not disable the power cord grounding plug. The grounding plug is an important safety feature.
— Plug the power cord in a grounded (earthed) outlet that is easily accessible at all times.
— Disconnect power from the equipment by unplugging the power cord from the electrical outlet.
WARNING!To reduce the risk of serious injury, read the Safety & Comfort Guide. It describes proper
workstation setup, posture, health, and work habits for computer users, and provides important electrical
and mechanical safety information. This guide is located at 
http://www.hp.com/ergo and on the
documentation CD (if one is included with the product).
WARNING!If a product is shipped in packaging marked with this symbol, , the product must always
be lifted by two persons to avoid personal injury due to product weight.
CAUTION:Static electricity can damage the electronic components of the workstation. Before
beginning these procedures, be sure you discharge static electricity by briefly touching a grounded metal
object.
CAUTION:Observe the following cautions when removing or replacing a processor:
— Installing a processor incorrectly can damage the system board. Contact an HP authorized reseller
or service provider to install the processor. If you plan to install the processor yourself, read all of the
instructions carefully before you begin.
— Failure to follow the workstation preparation instructions can result in an improperly installed
processor, causing extensive workstation damage.
— Processor socket pins are delicate and bend easily. Use extreme care when placing the processor
in the socket.
CAUTION:To prevent damage to the workstation, observe the following Electrostatic Discharge
(ESD) precautions while performing the system parts removal and replacement procedures:
— Work on a static-free mat.
— Wear a static strap to ensure that any accumulated electrostatic charge is discharged from your body
to the ground.
— Create a common ground for the equipment you are working on by connecting the static-free mat,
static strap, and peripheral units to that piece of equipment.
NOTE:HP accessories are for use in HP Workstation products. They have been extensively tested
for reliability and are manufactured to high quality standards.
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							Service considerations
Review the following service considerations before replacing system components.
Cautions, warnings and safety precautions
Review the cautions, warnings, and safety precautions before accessing the workstation components.
Also, review the Safety and Regulatory Guide that came with the workstation for more information.
ESD information
Generating static
The following table shows that different activities generate different amounts of static electricity through
electrostatic discharge (ESD). Static electricity increases as humidity decreases.
Relative humidity
Event
55%40%10%
Walking across carpet
Walking across vinyl floor
Motions of bench worker7,500V
3,000V
400V15,000V
5,000V
800V35,000V
12,000V
6,000V
Removing bubble pack from PCB
Packing PCBs in foam-lined box7,000V
5,000V20,000V
11,000V26,500V
21,000V
CAUTION:Static electricity in the amount of 700 volts might degrade a product.
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							Preventing ESD equipment damage
Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree
of sensitivity. The following packaging and grounding precautions are necessary to prevent damage to
electric components and accessories:
●Transport products in static-safe containers such as tubes, bags, or boxes, to avoid hand contact.
●Protect electrostatic parts and assemblies with nonconductive or approved containers or
packaging.
●Keep electrostatic-sensitive parts in their containers until they arrive at static-free stations.
●Place items on a grounded surface before removing them from containers.
●When handling or touching a sensitive component or assembly, ground yourself by touching the
chassis.
●Avoid contact with pins, leads, or circuitry.
●Place reusable electrostatic-sensitive parts from assemblies in protective packaging or
nonconductive foam.
Personal grounding methods and equipment
Use the following items to help prevent ESD damage:
●Wrist straps—These are flexible straps with a maximum of one megohm ± 10% resistance in the
ground cords. To provide a proper ground, wear the strap against bare skin. The ground cord must
be connected and fit snugly into the banana plug connector on the grounding mat or workstation.
●Heel straps, toe straps, and boot straps—These can be used at standing workstations and are
compatible with most types of shoes or boots. On conductive floors or dissipative floor mats, use
them on both feet with a maximum of one megohm ± 10% resistance between the operator and
ground.
The following table shows protection levels available from static shielding materials.
Table 5-1  Static shielding protection levels
MethodVoltage
Antistatic plastic
Carbon-loaded plastic
Metalized laminate1,500V
7,500V
15,000V
This section provides guidelines to prevent ESD damage to equipment.
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							Grounding the work area
To prevent static damage in the work area:
●Cover the work surface with approved static-dissipative material. Use a wrist strap connected to
the work surface, and properly grounded tools and equipment.
●Use static-dissipative mats, foot straps, or air ionizers to give added protection.
●Handle electrostatic-sensitive components, parts, and assemblies by the case or PCB laminate.
Handle them only in static-free work areas.
●Disconnect power and input signals before inserting and removing connectors or test equipment.
●Use fixtures made of static-safe materials when fixtures must directly contact dissipative surfaces.
●Keep work area free of nonconductive materials, such as plastic assembly aids and Styrofoam.
●Use field service tools (such as cutters, screwdrivers, and vacuums) that are conductive.
Recommended ESD prevention materials and equipment
The recommended materials and equipment are:
●Antistatic tape
●Antistatic smocks, aprons, and sleeve protectors
●Conductive bins and other assembly or soldering aids
●Conductive foam
●Conductive tabletop workstations with a ground cord of one megohm ± 10% resistance
●Static-dissipative table or floor mats with a hard-tie to ground
●Field service kits
●Static awareness labels
●Wrist straps and footwear straps providing one megohm ± 10% resistance
●Material-handling packages
●Conductive plastic bags
●Conductive plastic tubes
●Conductive tote boxes
●Opaque shielding bags
●Transparent metallized shielding bags
●Transparent shielding tubes
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							Tools and software requirements
The tools necessary for workstation component removal and installation are:
●Torx T-15 driver
●Flat blade and cross-tip screwdrivers
●Diagnostics software
Special handling of components
The components included in this section require special handling when servicing the workstation.
WARNING!Do not use the front bezel as a handle or lifting point when lifting or moving the workstation.
Lifting the workstation from the front bezel, or lifting it incorrectly, could cause the workstation to fall,
causing possible injury to you and damage to the workstation. To properly and safely lift the workstation,
lift from the bottom of the workstation.
WARNING! Do not use the front bezel as a handle or lifting point when lifting or moving the
workstation. Lifting the workstation from the front bezel, or lifting it incorrectly, could cause the
workstation to fall, causing possible injury to you and damage to the workstation. To properly and safely
lift the workstation, use the handles. If the workstation is not equipped with handles, lift from the bottom
of the workstation.
Cables and connectors
Handle cables with care to avoid damage. Apply only the tension required to seat or unseat cables
during insertion or removal from the connector. When possible, handle cables by the connector or pull-
strap. In all cases, avoid bending or twisting the cables, and be sure that the cables are routed in such
a way that they cannot be caught or snagged by parts being removed or replaced.
When servicing the workstation, be sure that cables are placed in their proper location during the
reassembly process. Improper cable placement can damage the workstation.
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							Hard drives
Hard drives are fragile, precision components. Avoid subjecting them to physical shock and vibration.
The following guidelines apply to all drives, including failed drives, replacement drives, and spares.
●Do not remove hard drives from the shipping package for storage. Keep hard drives in their
protective packaging until they are mounted in the workstation.
●Avoid dropping hard drives from any height.
●If you are inserting or removing a hard drive, power off the workstation. Do not remove a hard drive
while the workstation is powered on or in standby mode.
●Before handling a drive, be sure that you discharge static electricity. While handling a drive, avoid
touching the connector. For more information about preventing electrostatic damage, see 
ESD
information on page 64.
To prevent possible ESD damage when the drive is installed, connect the drive power cable before
connecting the data cable. This discharges accumulated static electricity through the drive power
cable to the workstation chassis.
●When inserting a drive, do not use excessive force.
●Avoid exposing a hard drive to liquids, temperature extremes, or products with magnetic fields such
as monitors or speakers.
Lithium coin cell battery
The battery included with the workstation provides power to the real-time clock and has a lifetime of
about three years.
For instructions on battery removal and replacement, see 
Battery on page 161.
WARNING!This workstation contains a lithium battery. There is a risk of fire and chemical burn if the
battery is handled improperly. Do not disassemble, crush, puncture, short the external contacts, dispose
of in water or fire, or expose the battery to temperatures higher than 60° Centigrade (140° Fahrenheit).
NOTE:Do not dispose of batteries, battery packs, and accumulators with general household waste.
Customer self-repair
Under the Customer Self-Repair program, you can order a replacement part and install the part without
onsite HP technical assistance. See 
http://www.hp.com/go/selfrepair/ for information on the program as
customer self-repair may be required for some components.
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