HP consumer dv7-6b56nr notebook a1t84uar#aba Manuale Utente

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Maintenance and Service Guide
Removal and replacement procedures
USB board
Before removing the USB 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 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 
). 
5. Remove the following components: 
a. Primary and secondary hard drive covers (see 
)
b. Primary and secondary hard drives (see 
)
)
e. Speaker assembly (see 
f. Display assembly (see 
)
Remove the USB board:
1. Disconnect the USB board cable from the connector 1 on the system board.
2. Remove the Phillips PM2.5×5.0 screw 2 that secures the USB board to the base enclosure.
3. Remove the USB board 3 from the base enclosure.
Reverse this procedure to install the USB board.
Description 
Spare part number 
USB board (includes cable)
518168-001