HP Envy Maintenance And Service Manual page 67

Before removing the system 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 service cover (see
5.
Remove the battery (see
6.
Remove the hard drive (see
7.
Remove the card reader board (see
8. Remove the fan (see
When replacing the system board, be sure that the following components are removed from the
defective system board and installed on the replacement system board:
RTC battery (see RTC battery on page
●
Solid-state drive (see
●
Heat sink (see Heat sink on page
●
Memory module see
●
WLAN module see
●
WWAN module see
●
Remove the system board:
1. Remove the following cables:
Right speaker cable (1)
●
Power button board cable (2)
●
Display panel cable (3)
●
Keyboard cable (4)
●
TouchPad cable (5)
●
Keyboard backlight cable (6)
●
NFC cable (7)
●
Fan cable (8)
●
USB/audio board cable (9)
●
USB/audio board cable (10)
●
Service cover on page
Battery on page 39).
Hard drive on page
Card reader board on page
Fan on page 55).
48)
Solid-state drive on page
62)
(Memory modules on page
(WLAN module on page
(WWAN module on page
37).
42).
54).
40)
47).
44).
45).
Component replacement procedures
59