HP Pavilion Tx2500 Entertainment Notebook Pc Series Service Guide

							4.Remove the battery (see Battery on page 39).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 41)
b.Memory module compartment cover (see 
Memory module on page 44)
c.Optical drive (see 
Optical drive on page 43)
d.Keyboard (see 
Keyboard on page 49)
e.Switch cover (see 
Switch cover on page 51)
f.Display assembly (see 
Display assembly on page 53)
g.Top cover (see 
Top cover on page 56)
h.Power switch assembly (see 
Power switch assembly on page 59)
Remove the system board:
1.Press in on the ExpressCard slot bezel (1) to release the bezel from the ExpressCard slot.
2.Remove the ExpressCard slot bezel (2) from the ExpressCard slot.
NOTE:The ExpressCard slot bezel is included in the Plastics Kit, spare part number
487926-001.
Component replacement procedures 63 
						

							3.Release the ZIF connector (1) to which the audio/infrared board cable is connected and
disconnect the audio/infrared board cable (2) from the system board.
4.Use the optical drive connector (1) to lift the left side of the system board (2) until the power
connector (3) is clear of the base enclosure.
5.Pull the system board (4) away from the top cover at an angle and remove it.
Reverse this procedure to install the system board.
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							Pen holder and pen eject assembly
DescriptionSpare part number
Pen holder and pen eject assembly 464113-001
Before removing the pen holder and pen eject assembly, 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 cord.
4.Remove the battery (see 
Battery on page 39).
5.Remove the following components:
a.Pen (see 
Pen on page 40)
b.Hard drive (see 
Hard drive on page 41)
c.Memory module compartment cover (see 
Memory module on page 44)
d.Optical drive (see 
Optical drive on page 43)
e.Keyboard (see 
Keyboard on page 49)
f.Switch cover (see 
Switch cover on page 51)
g.Display assembly (see 
Display assembly on page 53)
h.Top cover (see 
Top cover on page 56)
i.Power switch assembly (see 
Power switch assembly on page 59)
j.System board (see 
System board on page 62)
Remove the pen holderand pen eject assembly:
1.Remove the Phillips PM2.0×3.0 screw (1) that secures the pen eject assembly to the base
enclosure.
2.Remove the pen eject assembly (2).
3.Remove the two Phillips PM2.0×3.0 screws (3) that secure the pen holder to the base enclosure.
Component replacement procedures 65 
						

							4.Remove the pen holder (4).
Reverse this procedure to install the pen holder and pen eject assembly.
Audio/infrared board
DescriptionSpare part number
Audio/infrared board (includes audio/infrared board cable) 441144-001
Before removing the audio/infrared board, 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 cord.
4.Remove the battery (see 
Battery on page 39).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 41)
b.Memory module compartment cover (see 
Memory module on page 44)
c.Optical drive (see 
Optical drive on page 43)
d.Keyboard (see 
Keyboard on page 49)
e.Switch cover (see 
Switch cover on page 51)
f.Display assembly (see 
Display assembly on page 53)
g.Top cover (see 
Top cover on page 56)
h.Power switch assembly (see 
Power switch assembly on page 59)
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							i.System board (see System board on page 62)
j.Pen holder (see 
Pen holder and pen eject assembly on page 65)
Remove the audio/infrared board:
1.Remove the two Phillips PM2.0×3.0 screws (1) that secure the audio/infrared board to the
system board.
2.Release the audio/infrared board (2) by sliding it away from you until the connectors on the front
of the board disengage from the openings in the base enclosure.
3.Remove the audio/infrared board (3).
Reverse this procedure to install the audio/infrared board.
Component replacement procedures 67 
						

							Fan/heat sink assembly
DescriptionSpare part number
Fan/heat sink assembly (includes thermal paste and thermal pads) 487925-001
NOTE:To properly ventilate the computer, allow at least a 7.6-cm (3-inch) clearance on the right
side and rear panel of the computer.
The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is
designed to turn on automatically when high temperature conditions exist. These conditions are
affected by high external temperatures, system power consumption, power management/battery
conservation configurations, battery fast charging, and software requirements. Exhaust air is
displaced through the ventilation grill located on the left side of the computer.
Before removing the fan/heat sink assembly, 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 cord.
4.Remove the battery (see 
Battery on page 39).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 41)
b.Memory module compartment cover (see 
Memory module on page 44)
c.Optical drive (see 
Optical drive on page 43)
d.Keyboard (see 
Keyboard on page 49)
e.Switch cover (see 
Switch cover on page 51)
f.Display assembly (see 
Display assembly on page 53)
g.Top cover (see 
Top cover on page 56)
h.Power switch assembly (see 
Power switch assembly on page 59)
i.System board (see 
System board on page 62)
Remove the fan/heat assembly:
1.Disconnect the fan cable (1) from the system board.
2.Remove the four Phillips PM2.0×4.0 screws (2) that secure the fan/heat sink assembly to the
system board.
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							3.Remove the fan/heat sink assembly (3).
NOTE:Due to the adhesive quality of the thermal paste and thermal pads located between the
fan/heat sink assembly and system board components, it may be necessary to move the fan/
heat sink assembly from side to side to detach the assembly.
NOTE:The thermal paste and thermal pads should be thoroughly cleaned from the surfaces of the
fan/heat sink assembly (1) and the system board components (2) each time the fan/heat sink
assembly is removed. Thermal paste and thermal pads are included with all system board, fan/heat
sink assembly, and processor spare part kits. A separate thermal pad kit is available using spare part
number 634256-001.
Reverse this procedure to install the fan/heat sink assembly.
Component replacement procedures 69 
						

							Processor
NOTE:All processor spare part kits include thermal paste.
DesriptionSpare part number
AMD Turion 64 Mobile Technology ZM-86 processor (2.4-GHz, 1-MB L2 cache, 800-MHz FSB) 507974-001
AMD Turion 64 Mobile Technology ZM-84 processor (2.3-GHz, 1-MB L2 cache, 800-MHz FSB) 507957-001
AMD Turion 64 Mobile Technology ZM-82 processor (2.2-GHz, 1-MB L2 cache, 800-MHz FSB) 507973-001
AMD Turion 64 Mobile Technology ZM-80 processor (2.1-GHz, 1-MB L2 cache, 800-MHz FSB) 507972-001
AMD Turion 64 Mobile Technology RM-72 processor (2.1-GHz, 1-MB L2 cache, 800-MHz FSB) 507978-001
AMD Turion 64 Mobile Technology RM-70 processor (2.0-GHz, 1-MB L2 cache, 800-MHz FSB) 507977-001
AMD Athlon QL-62 processor (2.0-GHz, 512-KB L2 cache, 667-MHz FSB) 506052-001
AMD Athlon QL-60 processor (1.9-GHz, 512-KB L2 cache, 667-MHz FSB) 507982-001
Before removing the processor, 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 cord.
4.Remove the battery (see 
Battery on page 39).
5.Remove the following components:
a.Hard drive (see 
Hard drive on page 41)
b.Memory module compartment cover (see 
Memory module on page 44)
c.Optical drive (see 
Optical drive on page 43)
d.Keyboard (see 
Keyboard on page 49)
e.Switch cover (see 
Switch cover on page 51)
f.Display assembly (see 
Display assembly on page 53)
g.Top cover (see 
Top cover on page 56)
h.Power switch assembly (see 
Power switch assembly on page 59)
i.System board (see 
System board on page 62)
Remove the processor:
1.Use a flat-bladed screwdriver to turn the processor locking screw (1) one-half turn
counterclockwise until you hear a click.
70 Chapter 4   Removal and replacement procedures 
						

							2.Lift the processor (2) straight up and remove it.
NOTE:The gold triangle (3) on the processor should be aligned with the triangle (4) embossed
on the processor socket when you install the processor.
Reverse this procedure to install the processor.
Component replacement procedures 71 
						

							5 Setup Utility
WARNING!Only authorized technicians trained by HP should repair this equipment. All
troubleshooting and repair procedures are detailed to allow repair at only the subassembly or module
level. Because of the complexity of the individual boards and subassemblies, do not attempt to make
repairs at the component level or modify any printed wiring board. Improper repairs can create a
safety hazard. Any indication of component replacement or printed wiring board modification may
void any warranty or exchange allowances.
Starting the Setup Utility
The Setup Utility is a ROM-based information and customization utility that can be used even when
your Windows operating system is not working or will not load.
NOTE:The fingerprint reader (select models only) does not work when accessing the Setup Utility.
The utility reports information about the computer and provides settings for startup, security, and
other preferences.
To start the Setup Utility:
1.Turn on or restart the computer.
2.Before Windows opens and while “Press  to enter setup” is displayed in the lower-left
corner of the screen, press f10.
72 Chapter 5   Setup Utility