HP Pavilion Dv9200 Entertainment Notebook Pc Series Service Guide

Removal and Replacement Preliminaries
Maintenance and Service Guide 4–3
4.3 Preventing Damage to 
Removable Drives
Removable drives are fragile components that must be handled 
with care. To prevent damage to the computer, damage to a 
removable drive, or loss of information, observe the following 
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...

4–4 Maintenance and Service Guide
Removal and Replacement Preliminaries
4.4 Preventing Electrostatic Damage
Many 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, the discharge 
contains enough power to alter device parameters or melt 
silicon junctions.
A sudden discharge of static electricity from a finger or other 
conductor...

Removal and Replacement Preliminaries
Maintenance and Service Guide 4–5
4.5 Packaging and Transporting 
Precautions
Use the following grounding precautions when packaging and 
transporting equipment:
■To avoid hand contact, transport products in static-safe 
containers, such as tubes, bags, or boxes.
■Protect all electrostatic-sensitive parts and assemblies with 
conductive or approved containers or packaging.
■Keep electrostatic-sensitive parts in their containers until 
the parts arrive at static-free...

4–6 Maintenance and Service Guide
Removal and Replacement Preliminaries
4.6 Workstation Precautions
Use the following grounding precautions at workstations:
■Cover the workstation with approved static-shielding material 
(refer to 
Table 4-2, “Static-Shielding Materials”).
■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 using fixtures that must directly...

Removal and Replacement Preliminaries
Maintenance and Service Guide 4–7
4.7 Grounding Equipment and 
Methods
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...

4–8 Maintenance and Service Guide
Removal and Replacement Preliminaries
Table 4-1 shows how humidity affects the electrostatic voltage 
levels generated by different activities.
Table 4-2 lists the shielding protection provided by antistatic 
bags and floor mats.
Ta b l e  4 - 1
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...

Maintenance and Service Guide 5–1
5
Removal and Replacement
Procedures
This chapter provides removal and replacement procedures.
There are as many as 109 screws, in 11 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.
Refer to Appendix A, “Screw Listing,” for detailed information 
on screw sizes, locations, and usage. 

5–2 Maintenance and Service Guide
Removal and Replacement Procedures
5.1 Serial Number
Report the computer serial number to HP when requesting 
information or ordering spare parts. The serial number is 
located on the bottom of the computer.
Serial Number Location
5.2 Disassembly Sequence Chart
Use the chart below to determine the section number to be 
referenced when removing computer components.
Disassembly Sequence Chart
Section Description# of Screws Removed
5.3Preparing the Computer For...

Removal and Replacement Procedures
Maintenance and Service Guide 5–3
Section Description# of Screws Removed
5.4Hard Drive2 loosened to remove each 
hard drive cover
4 removed to disassemble 
each hard drive
5.5Computer Feet0
5.6Memory Module2 loosened to remove the 
memory module compartment 
cover
5.7RTC Batter y0
5.8Mini Card Module2
ÄTo prevent an unresponsive system and the display of a 
warning message, install only a Mini Card device 
authorized for use in your computer by the governmental 
agency...

5–4 Maintenance and Service Guide
Removal and Replacement Procedures
Section Description# of Screws Removed
5.14Display Assembly
Display bezel
Camera module
Display inverter
Display panel
Display hinges
Display hinge covers
Wireless antenna transceivers
Microphones
Camera cable6
5
0
0
6
4
0
4
0
0
5.15To p  C o v e r18
5.16Wireless Switch Board2
5.17Audio Board1
5.18Bluetooth Module2
5.19USB/Magnetic Board1
5.20ExpressCard Assembly4
5.21Top Cover Support Trim5
5.22Display Lid Switch Module0
5.23Power...