HP ProBook 4420s HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PCs - Mai - Page 61

Keyboard, Remove the keyboard

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Keyboard Description Spare part number Keyboard For computer models with 33.8-cm (13.3-in) displays 599572-xxx For computer models with 35.6-cm (14.0-in) displays: 599573-xxx NOTE: For a detailed list of keyboards see the parts list in Computer major components on page 22 Before removing the keyboard, 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 Battery on page 49). 5. Remove the switch cover (see Switch cover on page 51). Remove the keyboard: 1. Remove the three Phillips PM2.5×3.0 screws that secure the keyboard to the computer. NOTE: On computer models with 35.6-cm (14.0-in) displays, remove four screws that secure the keyboard to the computer. Component replacement procedures 53

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Keyboard
Description
Spare part number
Keyboard
For computer models with
33.8-cm
(13.3-in) displays
599572-
xxx
For computer models with
35.6-cm
(14.0-in) displays:
599573-
xxx
NOTE:
For a detailed list of keyboards see the parts list in
Computer major components
on page
22
Before removing the keyboard, 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
Battery
on page
49
).
5.
Remove the switch cover (see
Switch cover
on page
51
).
Remove the keyboard:
1.
Remove the three Phillips PM2.5×3.0 screws that secure the keyboard to the computer.
NOTE:
On computer models with
35.6-cm
(14.0-in) displays, remove four screws that secure
the keyboard to the computer.
Component replacement procedures
53