Acer Extensa 670 Service Guide

							Service Guide2-7 2.5.3 Installing an External Serial Port Device
The notebook contains an external RS-232 serial port with a 9-pin, male DB-9 connector as shown
in Figure 2-5 (25-pin cables require the use of an adapter for use with the 9-pin port). The serial
ports are used to interconnect such devices as:
· External Modem
· Serial Mouse
· Serial Printer
· Any device that uses an RS-232 interface
Caution:Never connect a parallel device to a serial port or a serial device to a parallel port or video
port; this may cause damage to the notebook and/or external device. If you are uncertain
of what type connector the external device has, refer to the technical manual for the
external device.Figure 2-5Serial Port Pinouts 
						

							2-8Installation 2.5.4 Installing an External VGA Monitor
The notebook contains an external CRT port that can drive one of  a variety of monitor resolutions
and colors as summarized in Table 1-9. The associated connector location and pinouts are shown in
Figure 2-6.Figure 2-6External VGA Pinouts
Use the following procedure to install an external monitor:
1.Turn off power to both the notebook and monitor.
2.Connect the 15-pin external VGA cable from the monitor to the VGA connector on the notebook
computer (refer to Figure 2-6).
3.Power up the notebook computer first; then turn on power to the monitor.
4.Setup the notebook display mode for LCD only, simultaneous LCD and CRT or CRT only using
the BIOS setup utility or hotkey (see Paragraph 1.2.2.3).
5.Install the correct driver if required (refer to the Monitor Installation Instructions supplied by the
CRT vendor). 
						

							Service Guide2-9 2.5.5 Installing the Security Lock Option
Use the following procedure to install the optional Kensington®
 security lock.
1.Unpack the Kensington Lock Kit.
2.Secure the loop end of the lock to a permanent fixture located such that the notebook can be
installed in a desired location.
3.Insert the lock into the slot on the left side of the computer.
4.Rotate the key to its locked position and remove the key.
This completes the options installation subsection. 
						

							2-10Installation 2.6. Battery Pack Installation
First turn off the computer and disconnect the AC adapter if attached to the computer; then follow
these steps:
1.Unlatch the battery compartment door (right front corner of the unit) as shown in Figure 2-7.
2.Slide the battery compartment door out slightly and then swing the door outward as shown in
Figure 2-7.
3.If changing batteries, grasp the loop attached to the battery and pull the battery out of the
compartment.
4.Look for label THIS SIDE UP and insert the battery with label up until it snaps in place; then
close the battery compartment door.Figure 2-7Battery Pack Installation 
						

							Service Guide2-11 2.7. Installing the AC Power Adapter
Use the following procedures to connect the AC adapter to the system:
Caution:Use only the AC adapter supplied with the computer; other adapters can damage the unit.
1.Remove the AC adapter from the packaging.  Connect the round coaxial connector supplied
with the notebook to the DC IN power receptacle on the left rear of the notebook as shown in
Figure 2-8 (a).
2.Connect the female side of the AC power cord to the AC adapter (b) and connect the male end
to a grounded AC outlet (c).Figure 2-8Installing the AC Adapter 
						

							2-12Installation 2.8. Initial System Checkout
After youve installed all internal options and external cabling, youre ready for system checkout and
software configuration.
To check out the system, press the power button on the left side of the notebook which initiates 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 computer automatically loads its operating system and
windows environment. If self test fails to complete and an error message is displayed, try powering
down the computer for a couple of minutes and turning power back on to repeat self test. If the error
message persists, refer to Chapter 5 for troubleshooting information.
2.9. Making Backups of System Software
Immediately after completion of the installation procedures, make backups of all software. In the
event of a disk problem, restore the system using the System Files Recovery disk and the set of
backup disks.
Note:Refer to the Extensa  Series Notebook Computer User’s Guide for additional information. 
						

							&KDSWHU
Operating Instructions
Service Guide3-1
3.1. Introduction
This chapter contains a summary of notebook operating procedures useful for maintenance
operations. For additional detail, refer to the Extensa Series Notebook Computer Users Guide
supplied with the notebook.
3.2. Controls/Indicators
The operating controls and indicators for the 67x Series Notebooks are identical (refer to Figure 3-
1). A brief description of the controls and indicators is provided in the following paragraphs.
Num
Lock
LED
Caps
Lock
LED Battery
Charging
LED Disk Media
LED
Power ButtonStandby Mode
Indicator Power/Battery Lo
w
Indicator
Figure 3-1 67x Operating Controls and Indicators
3.2.1  Power On/Off Switch
The notebook contains an alternate action power button located on the right side of the notebook as
shown in Figure 3-1.  On the first button depression, power is turned on to the notebook. On the
second depression, power is turned off.
3.2.2 Notebook LEDs
The notebook contains four front indicator LEDs and two right side LEDs as shown in Figure 3-1
and described in Table 3-1.
Table 3-1 Indicators 
						

							3-2 Operating Instructions
Indicator Light Description
Power/Battery-low Lights when the system is on and there is power to the system.
Flashes when the battery power is low.  Connect a powered AC adapter to the
computer as soon as possible.
Standby Mode Lights when the computer is in Standby mode.
Flashes when the computer is in 5V Suspend mode.
The computer enters Standby mode if the Standby hot key (Fn+F4) is pressed
or the STANDBY TIMEOUT parameter in Setup is enabled and expires.
The computer enters 5V Suspend mode when you press the 5V Suspend hot
key (Fn+F3) or the 5 VOLT SUSPEND TIMEOUT parameter in Setup is
enabled and expires, or the display is closed.
Disk Media Lights when the computer writes to or reads from the hard disk drive, or reads
from the CD-ROM drive.
Battery Charging Lights when a powered AC adapter connected to the computer is charging the
battery.
Flashes when there is a problem with the battery or the battery is not
recognized by the smart charger.
Turns off when there is no battery or the battery is fully charged.
Caps Lock Lights when the caps lock function is toggled ON using the Caps Lock key.
Num Lock Lights when the embedded numeric keypad is toggled ON using the Num
Lock hot key (Fn+F7)
3.2.2.1  Hot Key Sequences
Table 3-2 contains a summary of hot key sequences useful when performing maintenance
operations.
Table 3-2 Summary of Notebook Hot Key Sequences
Function Key Sequence
Increase LCD screen brightness Fn-Up Arrow
Decrease LCD screen brightness Fn-Down Arrow
Lighten LCD screen contrast Fn-Right Arrow
Darken the LCD screen contrast Fn-Left Arrow
Alternate between display modes (LCD, Ext.l CRT or both) Fn-F12 or Ctrl-Alt-F12
Enter 0V Suspend Mode Fn-F2 or Ctrl-Alt-F2
Exit 0V Suspend Mode Press Power Button
Enter 5V Suspend Mode Fn-F3 or Ctrl-Alt-F3
Exit 5V Suspend Mode Press any key
Enter Standby Mode Fn-F4
Resume from Standby Mode Press any key
Toggle speaker output on/off Fn-End or Ctrl-Alt-S
Enter BIOS Setup (during POST) F2
Numeric Lock Fn-F7
Turn off the LCD backlight Fn-F11
Turn on the LCD backlight Press any key
Stop a command or application Ctrl-Pause
Resume a command or application Press any key
Send the contents of the screen to the printer Shift-PrtSc 
						

							Service Guide3-3 Table 3-2 Summary of Notebook Hot Key Sequences
Function Key Sequence
Sets the notebook to echo keystrokes to the printer; prints a line
when you press Enter; continues until you press Ctrl-PCtrl-P
Enable/disable the internal keypad Fn-T
Toggle Scroll Lock function on/off Fn-F6
Bring up the setup screen anytime Fn-F1 or Ctrl-Alt-F1
Warm boot Ctrl-Alt-Del
Start Windows logo key
Activate next taskbar button Windows logo key-Tab
Explore the computer Windows logo key-E
Find files Windows logo key-F
Minimize all Windows logo key-M
Display run dialog box Windows logo key-R
Display the applications context menu Application key 
						

							C h a p t e r     4 C h a p t e r     4
Theory of OperationService Guide4-1 4.1. Introduction
This chapter contains a general block diagram theory of operation description of the Extensa 67x
Series Notebook Computers.
Note:Various internal components may change on future models and busses/bus speeds are
subject to change.
4.2. Notebook Functional Overview
The Extensa 67x Series Notebook consist of:
· System Processor - implemented on the Motherboard Assembly
· Memory Subsystem - implemented on the Motherboard Assembly
· Processor/Memory/I/O Control - implemented on the Motherboard Assembly
· Keyboard Subsystem - implemented on the Motherboard and the Keyboard Assemblies
· Video Subsystem - implemented on the Motherboard and on the LCD Display Assembly
· Sound Subsystem - implemented on the Motherboard Assembly.
· Touchpad Mouse Subsystem- implemented on the Touchpad assembly and on the
Motherboard Assembly
· Hard Disk Drive Subsystem - implemented on the Motherboard Assembly and the Hard Disk
Drive Assembly
· Floppy Disk Drive Subsystem - implemented on the Motherboard and Floppy Disk Drive
Assembly
· Power Subsystem - implemented on the Charger Board, Inverter Board, battery packs, and AC
adapter
4.2.1 System Processor
The System Processor function for the notebook is implemented on the Motherboard  in the form of
an Intel Pentium P55-C Superscalar 586 Processor Chip. The processor operates in conjunction
with RAM and ROM Memory and other control logic  to process software instructions (BIOS, DOS,
Windows, and applications).  The processor communicates with the hard disk drive and the memory
components using high speed busses.
The Processor also interacts with other hardware logic to provide the power savings features for the
notebook. These features include controlling CPU clock speeds, reducing clock speeds whenever
possible (e.g. when performing floppy disk drive accesses), powering down unused devices, etc.