HP Pavilion Dv9400 Entertainment Notebook Pc Series Service Guide

Removal and Replacement Procedures
Maintenance and Service Guide 5–55
2. Release the ZIF connector 1 to which the wireless switch 
board cable is connected and disconnect the wireless switch 
board cable 2 from the system board.
Removing the Wireless Switch Board 

5–56 Maintenance and Service Guide
Removal and Replacement Procedures
3. Remove the two silver Phillips PM2.5×5.0 screws 1 that 
secure the wireless switch board to the base enclosure.
4. Remove the wireless switch board 2.
Removing the Wireless Switch Board
Reverse the above procedure to install the wireless switch board. 

Removal and Replacement Procedures
Maintenance and Service Guide 5–57
5.17 Audio Board
1. Prepare the computer for disassembly (Section 5.3) and 
remove the following components:
❏Hard drive (Section 5.4)
❏Optical drive (Section 5.9)
❏Switch cover (Section 5.10)
❏Keyboard (Section 5.11)
❏Speaker assembly (Section 5.12)
❏Display assembly (Section 5.14)
❏Top cover (Section 5.15)
Audio Board Spare Part Number Information
Audio board (includes audio board cable and infrared lens) 
for use with dv9000
Audio...

5–58 Maintenance and Service Guide
Removal and Replacement Procedures
2. Remove the silver Phillips PM2.5×5.0 screw 1 that secures 
the audio board to the computer.
3. Slide the audio board 2 back to disengage the audio 
connectors from the base enclosure.
4. Remove the audio board 3.
5. Disconnect the audio board cable 4 from the system board.
✎The audio board cable is included with the audio board spare 
part kit and is also included in the Cable Kit, spare part number 
434677-001.
Removing the Audio...

Removal and Replacement Procedures
Maintenance and Service Guide 5–59
5.18 Bluetooth Module
1. Prepare the computer for disassembly (Section 5.3) and 
remove the following components:
❏Hard drive (Section 5.4)
❏Optical drive (Section 5.9)
❏Switch cover (Section 5.10)
❏Keyboard (Section 5.11)
❏Speaker assembly (Section 5.12)
❏Display assembly (Section 5.14)
❏Top cover (Section 5.15)
Bluetooth Module Spare Part Number Information
Bluetooth module (includes Bluetooth module cable) 412766-001 

5–60 Maintenance and Service Guide
Removal and Replacement Procedures
2. Disconnect the Bluetooth module cable 1 from the 
system board.
✎The Bluetooth module cable is included with the Bluetooth 
module spare part kit and is also included in the Cable Kit, 
spare part number 434677-001.
3. Route the Bluetooth module cable 2 under the system board.
4. Remove the two silver Phillips PM2.0×3.0 screws 3 that 
secure the Bluetooth module to the base enclosure.
5. Remove the Bluetooth module 4.
Removing the...

Removal and Replacement Procedures
Maintenance and Service Guide 5–61
5.19 USB/Magnetic Board
1. Prepare the computer for disassembly (Section 5.3) and 
remove the following components:
❏Hard drive (Section 5.4)
❏Optical drive (Section 5.9)
❏Switch cover (Section 5.10)
❏Keyboard (Section 5.11)
❏Speaker assembly (Section 5.12)
❏Display assembly (Section 5.14)
❏Top cover (Section 5.15)
USB/Magnetic Board Spare Part Number Information
USB/magnetic board (includes USB/magnetic board cable) for 
use with...

5–62 Maintenance and Service Guide
Removal and Replacement Procedures
2. Disconnect the USB/magnetic board cable 1 from the 
ExpressCard assembly.
✎The USB/magnetic board cable is included with the 
USB/magnetic board spare part kit and is also included in the 
Cable Kit, spare part number 434677-001.
3. Remove the silver Phillips PM2.5×5.0 screw 2 that secures 
the USB/magnetic board to the base enclosure.
4. Remove the USB/magnetic board 3.
Removing the USB/Magnetic Board
Reverse the above procedure to...

Removal and Replacement Procedures
Maintenance and Service Guide 5–63
5.20 ExpressCard Assembly
1. Prepare the computer for disassembly (Section 5.3) and 
remove the following components:
❏Hard drive (Section 5.4)
❏Optical drive (Section 5.9)
❏Switch cover (Section 5.10)
❏Keyboard (Section 5.11)
❏Speaker assembly (Section 5.12)
❏Display assembly (Section 5.14)
❏Top cover (Section 5.15)
❏USB/magnetic board (Section 5.19)
ExpressCard Assembly Spare Part Number Information
ExpressCard assembly 432988-001 

5–64 Maintenance and Service Guide
Removal and Replacement Procedures
2. Push in on the ExpressCard slot bezel 1 to release the bezel 
from the ExpressCard slot.
3. Remove the ExpressCard slot bezel 2.
✎The ExpressCard slot bezel is included in the Plastics Kit, 
spare part number 432981-001.
Removing the ExpressCard Slot Bezel