7. If applicable, disconnect the backlight cable by lifting the connector latch (4), and then disconnect the
cable from the system board (5).
8. Remove the keyboard.
Reverse this procedure to install the keyboard.
When installing a keyboard, to make sure the keyboard lays at, the keyboard ribbon cable must be bent at
the appropriate point before installation. There are markings, typically a thin white line across the breadth of
the cable, that indicate where to bend the cable. On HP ProBook 450 G3 models, bend at the marking labeled
S1 (1), and then fold the cable over (2). If installing a backlit keyboard, follow the same procedures for the
backlight cable.
Component replacement procedures 51
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