Table of Contents
Advertisement
LCD Display Screen
The LCD display is a two-line by 16-character screen that indicates
the boot status as well as any BIOS check point errors encountered
upon system initialization.
microcontroller firmware send the LCD display messages that appear
on the screen. However, if you hooked up a special purpose driver to
control the LCD module, this driver define the messages. See the
driver manual for more information.
Table 1-2 lists the LCD messages from the system BIOS and the
microcontroller at power on.
Table 1-2
LCD Messages
Message
Hello! Welcome !
POST Checkpoints
Power #1 Fails !
Power #2 Fails !
Power #3 Fails !
Battery Fails !
1-12
Normally, the system BIOS and the
Description
This is the first message that appears on the
LCD screen. This message indicates that the
microcontroller works fine.
During
the
system
tests (POST), the LCD screen shows which
POST check-point is currently being tested.
After POST, the microcontroller checks the
power subsystem status.
power supply module 1 is bad, this message
appears on the LCD screen.
If the microcontroller detects that power
supply module 2 is bad, this message
appears on the LCD screen.
If the microcontroller detects that power
supply module 3 is bad, this message
appears on the LCD screen.
Normally, this message indicates that the
battery is bad and must be replaced with a
new one.
There are times when this message appears
for a few seconds but do not necessarily
mean that the battery is bad. Refer to the
previous page for these instances.
AcerAltos 19000Pro4 System Guide
power-on
self-
If it detects that
Advertisement
Table of Contents
