HP Pavilion Dv3 1124ca Entertainment Notebook Pc Manual

							Spare part
numberDescription
506237-0016-cell, 55-Wh, 2.55-Ah Li-ion battery
506238-0019-cell, 83-Wh, 2.55-Ah Li-ion battery
506239-001Base enclosure (for slot-loading optical drive)
506240-001Switch cover (includes LED board and cable)
506241-001Top cover (includes TouchPad and cable, fingerprint reader board cable, and caps lock LED board and cable)
506930-001Camera/microphone module
506931-001Display Bracket Kit
506932-0011024-MB (PC2-6400, 800-MHz, DDR2) memory module
506933-0012048-MB (PC2-6400, 800-MHz, DDR2) memory module
506934-0014096-MB (PC2-6400, 800-MHz, DDR2) memory module
506935-001Hard Drive Kit (includes hard drive bracket and screws)
506938-001Base enclosure (for tray-loading optical drive)
506953-001Plastics Kit
506955-001Speakers
506957-001TouchPad on/off button board
506960-001Fan and heat sink (includes heat sink retention clip and replacement thermal material)
506961-001Screw Kit
506962-001Fingerprint reader board (includes fingerprint reader board cable)
507091-001Keyboard for use in the United States
507091-121Keyboard for use in Canada
507092-001Keyboard (with backlight) for use in the United States
507093-001Audio board (includes audio board cable)
507094-001Power connector
507885-001TouchPad bracket
507886-001LED bracket
507887-001Rubber Foot Kit (includes 4 base enclosure rubber feet)
512225-001 400-GB, 5400-rpm hard drive (includes bracket)
Sequential part number listing 23 
						

							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
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
CAUTION: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.
24 Chapter 4   Removal and replacement procedures 
						

							Cables and 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 25 
						

							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 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 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 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
Event10%40%55%
Walking across carpet35,000 V15,000 V7,500 V
Walking across vinyl floor12,000 V5,000 V3,000 V
Motions of bench worker6,000 V800 V400 V
Removing DIPS from plastic tube2,000 V700 V400 V
Removing DIPS from vinyl tray11,500 V4,000 V2,000 V
Removing DIPS from Styrofoam14,500 V5,000 V3,500 V
Removing bubble pack from PCB26,500 V20,000 V7,000 V
Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V
26 Chapter 4   Removal and replacement procedures 
						

							Packaging and transporting guidelines
Follow these grounding guidelines when packaging and transporting equipment:
●To avoid hand contact, transport products in static-safe tubes, bags, or boxes.
●Protect ESD-sensitive parts and assemblies with conductive or approved 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 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 nonconductive 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 contact with pins, leads, or circuitry.
●Turn off power and input signals before inserting or removing connectors or test equipment.
Preliminary replacement requirements 27 
						

							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 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 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
●Nonconductive 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.
MaterialUseVoltage protection level
Antistatic plasticBags1,500 V
Carbon-loaded plasticFloor mats7,500 V
Metallized laminate Floor mats 5,000 V
28 Chapter 4   Removal and replacement procedures 
						

							Unknown user password
If the computer you are servicing has an unknown user password, follow these steps to clear the
password.
NOTE:These steps also clear CMOS.
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.
4.Remove the battery (see 
Battery on page 32).
5.Remove the RTC battery (see 
RTC battery on page 57).
6.Wait approximately 5 minutes.
7.Replace the RTC battery and reassemble the computer.
8.Connect AC power to the computer. Do not reinsert any batteries at this time.
9.Turn on the computer.
All passwords and all CMOS settings have been cleared.
Preliminary replacement requirements 29 
						

							Component replacement procedures
This chapter provides removal and replacement procedures.
There are as many as 69 screws, in 8 different sizes, that must be removed, replaced, or loosened when
servicing the computer. Make special note of each screw size and location during removal and
replacement.
Serial number
When ordering parts or requesting information, provide the computer serial number and model
description provided on the service tag.
Component Description
(1)Product nameThis 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 products
hardware components. The part number helps a service technician
to determine what components and parts are needed.
(4)Model descriptionThis is the number used to locate documents, drivers, and support
for the computer.
(5)Warranty period This number describes the duration of the warranty period for the
computer.
30 Chapter 4   Removal and replacement procedures 
						

							Computer feet
DescriptionSpare part number
Rubber Foot Kit (includes 4 base enclosure rubber feet) 507887-001
The computer feet are adhesive-backed rubber pads. The feet attach to the base enclosure in the
locations illustrated below.
Component replacement procedures 31 
						

							Battery
DescriptionSpare part number
9-cell, 83-Wh, 2.55-Ah Li-ion506236-001
6-cell, 55-Wh, 2.55-Ah Li-ion 506237-001
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.Turn the computer upside down on a flat surface with the battery bay toward you.
2.Slide and release the battery release latch (1).
NOTE:The battery release latch automatically returns to its original position.
3.Lift the battery by the inner edge (2) to release the battery from the battery bay.
4.Remove the battery (3).
To install the battery, insert the outer edge of the battery into the battery bay, and then press down on
the inner edge until the battery is seated. The battery release latch automatically locks the battery in
place.
32 Chapter 4   Removal and replacement procedures