Acer TravelMate 4150, Service Manual

Page: 27 / 127

18 Chapter 1
Fn+F7
Touchpad On/Off
This key will cause the internal touchpad pointing device to
be disabled/enabled . This is to prevent accidental system
wake-ups from standby. Pressing this key a second time
will re-enable the touch pad pointing device. BIOS check
Internal AuxDev if not exist then BIOS empty return.
Fn+F8
Speaker On/Off
This key will cause the audio output to the speakers to
muted or disabled. Pressing this key a second time will re-
enable the audio output to the speakers.
Fn+F11
Numlock
The Num-Lock feature is a standard AT keyboard feature.
For Acer machines, Numlock is off by default and when the
NumLock is on, the internal keyboard will act as numeric
key padlock.
If an external keyboard or keypad is present, then the
NumLock will have the following definitions:
T
NumLock is on, when the system boots
with external keyboard or numeric
keypad. The external keyboard/keypad
NumLock status is on and internal
keyboard overlay numeric keys are
disabled.
T
NumLock key can be typed on/off via the
internal keyboard (Fn+F11) or the
external keyboard/keypad, but NumLock
affects the external keyboard/keypad
only.
T
The NumLock shift state (NumLock is off)
is NOT used for the cursor movement by
the internal keyboard numeric keys.
T
The state of the NumLock is not changed
by the attachment/removal (hot plug) of
the external keyboard/keypad.
This is to support the attachment of an external
numeric keypad. The user may use the internal
keyboard for full alphabet typing, and the external
keypad for numeric entry.
The state of the NumLock is not changed by the
attachment/removal of the external keyboard (hot
plug).
Fn+F12
Scroll Lock
The Scroll Lock is a standard AT keyboard feature.
Fn+
w
Volume up
These keys can increase or decrease the brightness of the
LCD back light. This function should be handled by the
Analog function within the keyboard controller. Brightness
will step up/down one unit as each time these keys are
pressed.
Fn+
y
Volume down Decreases the sound volume.
Hot Key Icon Function Description
Hot key Icon Function Description
"Acer eManager" on page 19
"Acer eManager" on page 19
Hot key Icon Function Description
"Acer eManager" on page 19
"Acer eManager" on page 19
Hot key Icon Function Description
"Acer eManager" on page 19
"Acer eManager" on page 19
Hot key Icon Function Description
"Acer eManager" on page 19
"Acer eManager" on page 19