Acer ASPIRE 4253, Service Manual, Page: 28 / 226

1-18 Hardware Specifications and Configurations
Using the Keyboard
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The computer has a close-to-full-sized keyboard and an embedded numeric keypad, separate
cursor, lock, function and special keys.
Figure 1-8. Keyboard Lock Keys
Lock Keys
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The keyboard has three lock keys which can be toggled on and off.
Embedded Numeric Keypad
The embedded numeric keypad functions like a desktop numeric keypad. It is indicated by
small characters located on the upper right corner of the key caps. To simplify the keyboard
legend, cursor-control key symbols are not printed on the keys.
Table 1-7. Embedded Numeric Keypad
Lock key Description
Caps Lock When Caps Lock is on, all alphabetic characters typed are in uppercase.
Num Lock
<Fn> + <F11> When Num Lock is on, the embedded keypad is in numeric mode. The keys
function as a calculator (complete with the arithmetic ope, -, *, and /).
Use this mode when doing a lot of numeric data entry. A better solution would
be to connect an external keypad.
Scroll Lock
<Fn> + <F12> When Scroll Lock is on, the screen moves one line up or down when the up or
down arrow keys are pressed respectively. Scroll Lock does not work with
some applications.
Desired access Num Lock on Num Lock off
Number keys on embedded
keypad Type numbers in a normal
manner.
Cursor-control keys on
embedded keypad Hold <Shift> while using
cursor-control keys. Hold <Fn> while using
cursor-control keys.
Main keyboard keys Hold <Fn> while typing letters
on embedded keypad. Type the letters in a normal
manner.