HP EliteBook 8770w Manual

							Spare part
numberCSR flag Description
701978-FL1 A Keyboard (Windows 8) with backlight for use in Czechoslovakia (includes keyboard
cable, pointing stick and pointing stick cable)
702080–001 A Intel® Centrino™ 2430, EV-DO/HSPA minicard WLAN module
705053–001 N 128 GB solid-state drive (includes bracket)
710788–001 A F5321GWX HSPA + with GPS mini
Sequential part number listing 43 
						

							4 Removal and replacement procedures
Preliminary replacement requirements
Tools required
You will need the following tools to complete the removal and replacement procedures:
●Flat-bladed screwdriver
●Magnetic screwdriver
●Phillips P0 and P1 screwdrivers
●Torx T8 screwdriver
●5.0 mm hex socket driver
Service considerations
The following sections include some of the considerations that you must keep in mind during
disassembly and assembly procedures.
NOTE:As you remove each subassembly from the computer, place the subassembly (and all
accompanying screws) away from the work area to prevent damage.
Plastic parts
Using excessive force during disassembly and reassembly can damage plastic parts. Use care when
handling the plastic parts. Apply pressure only at the points designated in the maintenance
instructions.
44 Chapter 4   Removal and replacement procedures 
						

							Cables and and pointing stick connectors
CAUTION:When servicing the computer, be sure that cables are placed in their proper locations
during the reassembly process. Improper cable placement can damage the computer.
Cables must be handled with extreme care to avoid damage. Apply only the tension required to
unseat or seat the cables during removal and insertion. Handle cables by the connector whenever
possible. In all cases, avoid bending, twisting, or tearing cables. Be sure that cables are routed in
such a way that they cannot be caught or snagged by parts being removed or replaced. Handle flex
cables with extreme care; these cables tear easily.
Drive handling
CAUTION:Drives are fragile components that must be handled with care. To prevent damage to
the computer, damage to a drive, or loss of information, observe these precautions:
Before removing or inserting a hard drive, shut down the computer. If you are unsure whether the
computer is off or in Hibernation, turn the computer on, and then shut it down through the operating
system.
Before handling a drive, be sure that you are discharged of static electricity. While handling a drive,
avoid touching the connector.
Before removing a diskette drive or optical drive, be sure that a diskette or disc is not in the drive and
be sure that the optical drive tray is closed.
Handle drives on surfaces covered with at least one inch of shock-proof foam.
Avoid dropping drives from any height onto any surface.
After removing a hard drive, an optical drive, or a diskette drive, place it in a static-proof bag.
Avoid exposing a hard drive to products that have magnetic fields, such as monitors or speakers.
Avoid exposing a drive to temperature extremes or liquids.
If a drive must be mailed, place the drive in a bubble pack mailer or other suitable form of protective
packaging and label the package “FRAGILE.”
Preliminary replacement requirements 45 
						

							Grounding guidelines
Electrostatic discharge damage
Electronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure
determine the degree of sensitivity. Networks built into many integrated and pointing stick circuits
provide some protection, but in many cases, ESD contains enough power to alter device parameters
or melt silicon junctions.
A discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or
microcircuitry. Even if the spark is neither felt nor heard, damage may have occurred.
An electronic device exposed to ESD may not be affected at all and and pointing stick can work
perfectly throughout a normal cycle. Or the device may function normally for a while, then degrade in
the internal layers, reducing its life expectancy.
CAUTION:To prevent damage to the computer when you are removing or installing internal
components, observe these precautions:
Keep components in their electrostatic-safe containers until you area ready to install them.
Use nonmagnetic tools.
Before touching an electronic component, discharge static electricity by using the guidelines
described in this section.
Avoid touching pins, leads, and pointing stick circuitry. Handle electronic components as little as
possible.
If you remove a component, place it in an electrostatic-safe container.
The following table shows how humidity affects the electrostatic voltage levels generated by different
activities.
CAUTION:A product can be degraded by as little as 700 V.
Typical electrostatic voltage levels
 Relative humidity
Event 10% 40% 55%
Walking across carpet 35,000 V 15,000 V 7,500 V
Walking across vinyl floor 12,000 V 5,000 V 3,000 V
Motions of bench worker 6,000 V 800 V 400 V
Removing DIPS from plastic tube 2,000 V 700 V 400 V
Removing DIPS from vinyl tray 11,500 V 4,000 V 2,000 V
Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V
Removing bubble pack from PCB 26,500 V 20,000 V 7,000 V
Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V
46 Chapter 4   Removal and replacement procedures 
						

							Packaging and transporting guidelines
Follow these grounding guidelines when packaging and transporting equipment:
●To avoid hand and pointing stick contact, transport products in static-safe tubes, bags, or boxes.
●Protect ESD-sensitive parts and assemblies with conductive or approved and pointing stick
containers or packaging.
●Keep ESD-sensitive parts in their containers until the parts arrive at static-free workstations.
●Place items on a grounded surface before removing items from their containers.
●Always be properly grounded when touching a component or assembly.
●Store reusable ESD-sensitive parts from assemblies in protective packaging or nonconductive
foam.
●Use transporters and pointing stick conveyors made of antistatic belts and roller bushings. Be
sure that mechanized equipment used for moving materials is wired to ground and that proper
materials are selected to avoid static charging. When grounding is not possible, use an ionizer to
dissipate electric charges.
Workstation guidelines
Follow these grounding workstation guidelines:
●Cover the workstation with approved static-shielding material.
●Use a wrist strap connected to a properly grounded work surface and use properly grounded
tools and equipment.
●Use conductive field service tools, such as cutters, screwdrivers, and vacuums.
●When fixtures must directly contact dissipative surfaces, use fixtures made only of static-safe
materials.
●Keep the work area free of non conductive materials, such as ordinary plastic assembly aids and
Styrofoam.
●Handle ESD-sensitive components, parts, and assemblies by the case or PCM laminate. Handle
these items only at static-free workstations.
●Avoid and pointing stick contact with pins, leads, or circuitry.
●Turn off power and input signals before inserting or removing connectors or test equipment.
Preliminary replacement requirements 47 
						

							Equipment guidelines
Grounding equipment must include either a wrist strap or a foot strap at a grounded workstation.
●When seated, wear a wrist strap connected to a grounded system. Wrist straps are flexible
straps with a minimum of one megohm ±10% resistance in the ground and pointing stick cords.
To provide proper ground, wear a strap snugly against the skin at all times. On grounded mats
with banana-plug connectors, use alligator clips to connect a wrist strap.
●When standing, use foot straps and a grounded floor mat. Foot straps (heel, toe, or boot straps)
can be used at standing workstations and are compatible with most types of shoes or boots. On
conductive floors or dissipative floor mats, use foot straps on both feet with a minimum of one
megohm resistance between the operator and ground. To be effective, the conductive strips
must be worn in contact with the skin.
The following grounding equipment is recommended to prevent electrostatic damage:
●Antistatic tape
●Antistatic smocks, aprons, and sleeve protectors
●Conductive bins and other assembly or soldering aids
●Nonconductive foam
●Conductive tabletop workstations with ground and pointing stick cords of one megohm
resistance
●Static-dissipative tables or floor mats with hard ties to the ground
●Field service kits
●Static awareness labels
●Material-handling packages
●Non conductive plastic bags, tubes, or boxes
●Metal tote boxes
●Electrostatic voltage levels and protective materials
The following table lists the shielding protection provided by antistatic bags and floor mats.
Material Use Voltage protection level
Antistatic plastic Bags 1,500 V
Carbon-loaded plastic Floor mats 7,500 V
Metallized laminate Floor mats 5,000 V
48 Chapter 4   Removal and replacement procedures 
						

							Component replacement procedures
This chapter provides removal and replacement procedures.
There are as many as 98 screws and screw locks that must be removed, replaced, or loosened when
servicing the computer. Make special note of each screw and screw lock size and location during
removal and replacement.
Service tag and PCID label
Service tag
When ordering parts or requesting information, provide the computer serial number and model
number provided on the service tag.
Item Component Description
(1)Product name This is the product name affixed to the front of the
computer.
(2)Serial number (s/n) This is an alphanumeric identifier that is unique to each
product.
(3)Part number/Product number (p/n) This number provides specific information about the
product’s hardware components. The part number helps
a service technician determine what components and
parts are needed.
(4)Warranty period This number describes the duration of the warranty
period for the computer.
PCID label
The PCID label provides the information required to properly reset the notebook firmware (BIOS)
back to factory shipped specifications when replacing the system board. The label may have a
different number of characters depending on the operating system on the computer.
NOTE:Computer details may vary from images.
Component replacement procedures 49 
						

							Windows 8 models
Non Windows 8 models
50 Chapter 4   Removal and replacement procedures 
						

							Computer feet
The computer feet (not illustrated) are adhesive-backed rubber pads. The feet are included in the
base enclosure spare part kit, spare part number 688765-001. The rubber feet that attach to the base
enclosure in the locations illustrated below.
Battery
DescriptionSpare part number
8-cell, Li-ion 2.8 Ah (75 WHr)632425-001
8-cell, Li-ion 2.8 Ah (83 WHr)632427-001
9–cell, Li-ion 3.0 Ah (100 WHr) 634087-001
9–cell, Li-ion 2.2 Ah (73 WHr) 634089-001
Before disassembling the computer, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
Remove the battery:
1.Position the computer upside down on a flat surface, with the front toward you.
2.Slide the battery release latch to the left (1) to release the battery.
3.Pivot the battery (2) upward and lift it out of the computer (3).
Install the battery by inserting it into the battery bay until you hear a click.
Component replacement procedures 51 
						

							SIM
Before removing the SIM, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.Remove the battery (see 
Battery on page 51).
Remove the SIM:
1.Press in on the SIM (1) to release it from the SIM slot.
2.Remove the SIM (2) from the SIM slot.
Install the SIM by inserting it into the SIM slot until you hear a click.
Service access cover
DescriptionSpare part number
Service access cover698410-001
Service access cover (RCTO) 699467-001
Before removing the service access cover, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
52 Chapter 4   Removal and replacement procedures