HP Pavilion Dv4 2100 Entertainment Notebook Pc Series Manual

							Removal and replacement procedures
Maintenance and Service Guide4–39
Fingerprint Reader board (select models only)
Before removing the Fingerprint Reader board: 
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 disconnecting the power cord from the AC outlet and then 
disconnecting the AC adapter from the computer. 
4. Remove the battery (see “Battery” on page 4-7). 
5. Remove the following components: 
a. Hard Drive (see “Hard Drive” on page 4-8)
b. Mini Card compartment cover (see “RTC battery” on page 4-12)
c. Optical drive (see “Optical drive” on page 4-19)
d. Keyboard (see “Keyboard” on page 4-20)
e. Keyboard cover (see “Keyboard cover” on page 4-23) 
f. Speaker assembly (see “Speaker assembly” on page 4-26)
g. Display assembly (see “Display assembly” on page 4-27)
h. Top cover (see “Top cover” on page 4-34)
Remove the Fingerprint Reader board:
1. Turn the top cover upside down, with the front toward you. 
2. Fold back the Mylar cover 1.
3. Remove the two Phillips PM2.0×2.0 broadhead screws 2 that secure the Fingerprint Reader to the top cover.
4. Remove the Fingerprint Reader from the top cover 3.
Reverse the above procedure to reassemble and install the Fingerprint Reader.
DescriptionSpare part number
Fingerprint Reader board (includes cable)486828-001 
						

							4–40Maintenance and Service Guide
Removal and replacement procedures
Modem module (select models only).
Before removing the modem module: 
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 disconnecting the power cord from the AC outlet and then 
disconnecting the AC adapter from the computer. 
4. Remove the battery (see “Battery” on page 4-7). 
5. Remove the following components: 
a. Hard Drive (see “Hard Drive” on page 4-8)
b. Mini Card compartment cover (see “RTC battery” on page 4-12)
c. WLAN module (see “WLAN module” on page 4-15)
d. Optical drive (see “Optical drive” on page 4-19)
e. Keyboard (see “Keyboard” on page 4-20)
f. Keyboard cover (see “Keyboard cover” on page 4-23) 
g. Speaker assembly (see “Speaker assembly” on page 4-26)
h. Display assembly (see “Display assembly” on page 4-27)
i. Top cover (see “Top cover” on page 4-34)
DescriptionSpare part number
All countries and regions except for Australia and New Zealand461749-001
Australia and New Zealand461749-011 
						

							Removal and replacement procedures
Maintenance and Service Guide4–41
Remove the modem module: 
1. Disconnect the modem module cable 1 from the modem module.
2. Remove the two Phillips PM2.0×4.0 screws 2 that secure the modem module to the system board
3. Lift up on the back of the modem module 3 to disconnect it from the system board.
4. Remove the modem module.
Reverse the above procedure to install the modem module. 
						

							4–42Maintenance and Service Guide
Removal and replacement procedures
Bluetooth module (select models only)
Before removing the Bluetooth module: 
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 disconnecting the power cord from the AC outlet and then 
disconnecting the AC adapter from the computer. 
4. Remove the battery (see “Battery” on page 4-7). 
5. Remove the following components: 
a. Hard Drive (see “Hard Drive” on page 4-8)
b. Mini Card compartment cover (see “RTC battery” on page 4-12)
c. WLAN module (see “WLAN module” on page 4-15)
d. Optical drive (see “Optical drive” on page 4-19)
e. Keyboard (see “Keyboard” on page 4-20)
f. Keyboard cover (see “Keyboard cover” on page 4-23) 
g. Speaker assembly (see “Speaker assembly” on page 4-26)
h. Display assembly (see “Display assembly” on page 4-27)
i. Top cover (see “Top cover” on page 4-34)
DescriptionSpare part number
Bluetooth module 537921-001
Bluetooth module cable
UMA graphics subsystems486847-001
Discrete graphics subsystems488130-001 
						

							Removal and replacement procedures
Maintenance and Service Guide4–43
Remove the Bluetooth module and cable: 
1. Turn the top cover upside down with the front toward you.
2. Lift the Bluetooth module 1 from the the computer.
3. Disconnect the Bluetooth module cable 2 from the Bluetooth module and system board.
4. Remove the tape 3 that secures the cable, and then remove the Bluetooth module and cable 4.
Reverse this procedure to install the Bluetooth module.  
						

							4–44Maintenance and Service Guide
Removal and replacement procedures
Audio board
Before removing the audio board: 
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 disconnecting the power cord from the AC outlet and then 
disconnecting the AC adapter from the computer. 
4. Remove the battery (see “Battery” on page 4-7). 
5. Remove the following components: 
a. Hard Drive (see “Hard Drive” on page 4-8)
b. Mini Card compartment cover (see “RTC battery” on page 4-12)
c. Mini Card bracket (see “WLAN module” on page 4-15)
d. Optical drive (see “Optical drive” on page 4-19)
e. Keyboard (see “Keyboard” on page 4-20)
f. Keyboard cover (see “Keyboard cover” on page 4-23) 
g. Speaker assembly (see “Speaker assembly” on page 4-26)
h. Display assembly (see “Display assembly” on page 4-27)
i. Top cover (see “Top cover” on page 4-34)
DescriptionSpare part number
Audio board486840-001
Audio board cable486841-001 
						

							Removal and replacement procedures
Maintenance and Service Guide4–45
Remove the audio board and cable: 
1. Disconnect the audio board cable 1 from the system board.
2. Release the audio board cable 2 from the base enclosure.
3. Remove the two Phillips PM2.5×3.0 screws 3 that secure the audio board to the system board.
4. Lift the rear edge of the audio board 4 so that the audio connectors slide out of the openings in the base 
enclosure, and then remove the audio board and cable.
Reverse this procedure to install the audio board.  
						

							4–46Maintenance and Service Guide
Removal and replacement procedures
USB board
Before removing the USB board: 
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 disconnecting the power cord from the AC outlet and then 
disconnecting the AC adapter from the computer. 
4. Remove the battery (see “Battery” on page 4-7). 
5. Remove the following components: 
a. Hard Drive (see “Hard Drive” on page 4-8)
b. Mini Card compartment cover (see “RTC battery” on page 4-12)
c. Mini Card bracket (see “WLAN module” on page 4-15)
d. Optical drive (see “Optical drive” on page 4-19)
e. Keyboard (see “Keyboard” on page 4-20)
f. Keyboard cover (see “Keyboard cover” on page 4-23) 
g. Speaker assembly (see “Speaker assembly” on page 4-26)
h. Display assembly (see “Display assembly” on page 4-27)
i. Top cover (see “Top cover” on page 4-34)
DescriptionSpare part number
USB board 486842-001
USB board cable486843-001 
						

							Removal and replacement procedures
Maintenance and Service Guide4–47
Remove the USB board and cable: 
1. Turn the computer right-side up, with the right side toward you.
2. Disconnect the USB board cable 1 from the system board.
3. Remove the cable 2 from the base enclosure clips. 
4. Remove the Phillips PM2.5×3.0 screw 3 that secures the USB board to the computer.
5. Lift the USB board 4 straight up to remove it from the computer.
Reverse this procedure to install the USB board.  
						

							4–48Maintenance and Service Guide
Removal and replacement procedures
Powe r  c o n n e c t o r
Before removing the power connector and cable: 
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 disconnecting the power cord from the AC outlet and then 
disconnecting the AC adapter from the computer. 
4. Remove the battery (see “Battery” on page 4-7). 
5. Remove the following components: 
a. Hard Drive (see “Hard Drive” on page 4-8)
b. Mini Card compartment cover (see “RTC battery” on page 4-12)
c. WLAN module (see “WLAN module” on page 4-15)
d. Optical drive (see “Optical drive” on page 4-19)
e. Keyboard (see “Keyboard” on page 4-20)
f. Keyboard cover (see “Keyboard cover” on page 4-23) 
g. Speaker assembly (see “Speaker assembly” on page 4-26)
h. Display assembly (see “Display assembly” on page 4-27)
i. Top cover (see “Top cover” on page 4-34)
j. Modem module cable (see “System board” on page 4-50)
DescriptionSpare part number
Power connector (includes cable)486836-001