Acer Extensa 510 Maintenance Manual

2.5.4Installing External VGA Monitor
The notebook is capable of driving both its internal LCD display and an
external VGA monitor (LCD only, simultaneous, or VGA only). The external
monitor connector pinouts and connector locations are shown in Figure 2-8.
To install an external monitor with the notebook, use the following steps:
1. Ensure that both the notebook and the external monitor are turned 
off.
2.Locate the 15-pin female VGA port on the rear of the notebook.
3.Attach the appropriate end of the...

2.5.5Installing External Microphone
An external microphone can be attached to the notebook using the leftmost
audio connector (when viewed from the rear of the notebook). When the
external microphone is installed and the unit powered up, the internal
microphone is disabled.
2.5.6 Installing External Audio Input Devices
The middle audio jack on the rear of the notebook allows you to connect an
external sound source (e.g. tape player, radio, etc. ) to the notebook.
2.5.7 Installing External Audio Output...

2.7Initial System Checkout 
After you’ve installed all internal options and external cabling, you’re ready
for system checkout and software configuration.
To check out the system, set the power switch on the notebook to the On (I
)
position which initiates the notebook self test. During self test execution,
the computer checks the operation of all key hardware including memory
and CPU (and displays copyright and version number data during test
execution).
Upon successful conclusion of self test, the...

3
Operating Instructions
3.1Introduction
The first two subsections describe the Extensa 51x Series Notebook
operating controls and indicators. The remainder of this section contains a
summary of computer operations related to notebook maintenance
including how to restore system software.
n
Note: 
 For additional operating instructions, refer to the Extensa Series
Notebook Computer Users Guide.
3.2Notebook Controls and Indicators
The Extensa Series Notebooks are equipped with the following controls and...

3.2.1Button Switches
The notebook contains two button switches above the keyboard including:
·Power On/Off 
Switch - Alternate action, button type switch that
controls power to the unit. Pressing the Power button causes power to
be applied to the notebook and power up self test to be run. The PWR
LED (left rear corner of notebook) glows green and the computer then
loads Windows 95. When the Power button is pressed again, the
Notebook powers down and all data in RAM memory is lost.
·Standby/Suspend...

3.2.3Touchpad Controls
The Extensa 51x Series Notebook Computers are equipped with a built-in
mouse device called the Touchpad physically located at the bottom of the
keyboard (refer to Figure 3-1).
The cursor is positioned by touching and dragging your finger in the
direction you want the cursor to go. The select functions are performed
either by tapping the touchpad or by pressing the two buttons (switches) at
the bottom of the keyboard.
You can change the operation of the pad by changing values in the...

·Insert the floppy into the floppy drive slot with the label side up and the
metal-shutter end first. Gently push the floppy into the floppy drive slot
until the floppy clicks into place.
·To remove a floppy, press the eject button until the floppy pops out.
·Never force open the access shutter on a floppy.
·Always remove a floppy from the floppy drive before turning off the
computer.
·Never transport the computer with a floppy in the floppy drive. Doing so
can damage the drive head.
·If a floppy appears...

3.3.4 Responding to Low Battery Conditions
The computer generally will notify you when you are reaching a low battery
condition by the following actions:
·Four short beeps per minute (unless battery warning is disabled)
·The battery low warning is automatically disabled when the AC Adapter
is installed on the notebook, regardless of the charge condition of the
battery pack.
·If the AC adapter is not plugged in within three minutes of a detected
battery low condition, the notebook enters Suspend mode (if...

3.3.7 Restoring Missing System Files
When you power up the Notebook, it automatically checks for certain key
files that must be present for normal system operation. If any of these files
are accidentally erased as indicated by error message, insert the Windows
95 Startup diskette and reboot the system. This will allow you to boot up
and troubleshoot your system.
3.3.8 Rebuilding the System Software
In the event of a hard drive replacement or system board replacement which
resulted in loss of system...

4
Theory of Operation
4.1Introduction
This section describes the notebook theory of operation.
4.2Notebook Functional Description
Functionally, the notebook computer consists of the following major
subsystems:
·Processor and Memory Subsystem
·I/O Subsystem
·Video Subsystem
·Hard Disk Subsystem
·Floppy Disk Subsystem
·PCMCIA Subsystem
·Power Subsystem
A functional block diagram of the Extensa Notebook is shown in Figure 4-1.
4.2.1Processor/Memory Subsystems
The Processor function, housed on the Main...