Acer Extensa 650 Maintenance Manual

							                                                                                           Troubleshooting Procedures    5-11  
¨Dialing problem or wrong number - Try dialing a number that you have 
previously dialed successfully.
¨Faulty phone line - Connect a telephone to the line and listen for a dial tone.
¨Software program - Check to ensure that you have installed the software 
correctly.
5.4 Fault Isolation Using Diagnostics
PC-Doctor, supplied with the Extensa Series Notebooks, is a powerful diagnostics tool 
that can help you determine the hardware configuration of a local or remote system, 
benchmark its performance, analyze the performance of all subsystems, and perform 
a suite of interactive and non-interactive tests on attached devices (such as printers, 
joystick devices, VGA monitors, SCSI devices, CD-ROM drives). The test results are 
stored in a log which can be printed out or saved in a disk file.
5.4.1 PC-Doctor (In DOS Mode or DOS Window)
Features of the diagnostic program are accessed through a series of pull-down menus 
and basic keyboard keys (cursor keys to move highlighted pointer, Enter key to select 
a highlighted feature, Esc key to cancel a function and move back one level.
PC-Doctor is typically user friendly but if you dont understand a feature, context-
sensitive help information is available at any time by pressing the F1 function key; 
pressing the F1 function key twice accesses the online Technical Reference Manual for 
PC-Doctor.
A powerful set of utilities within PC-Doctor (that can be run locally or remotely) simplify 
the task of determining system configuration data, allocating and using system memory, 
IRQ and DMA use, what device drivers are installed, what COM and LP T ports are 
assigned and what ports are available, identifying partitioning data for fixed disk 
drive(s), determining the VGA setup information, reading the software interrupts/
interrupt vectors, etc.
Functionally, PC-Doctor includes the following:
¨Group of non-Interactive diagnostic tests that perform a non-destructive test 
of the major hardware functions in the notebook (Processor, Memory, System 
board, video section, serial and parallel ports (when loopback adapters are 
installed), hard disk drive and floppy disk drive).
¨Group of Interactive tests (require operator input) for testing the keyboard, 
video sections, sound subsystem, mouse, joystick, disk drive, printer 
subsystem and the SCSI/CD-ROM Drive subsystems supported by the 
docking station options. 
						

							5-12   Troubleshooting Procedures
¨Utility that provides detailed system information such as configuration data, 
allocation and use of system memory, IRQ and DMA use, what device drivers 
are installed, what COM and LPT ports are assigned and what ports are 
available, partitioning data for fixed disk drive(s), VGA setup information, 
software interrupts and interrupt vectors, and installed SCSI options.
¨Group of special purpose utilities to run other tests from PC-Doctor, perform 
a virus scan of the system, edit configuration files, surface scan hard drives, 
measure system performance, open a DOS prompt, provides terminal access 
to devices connected to serial ports, supports memory debug operations, 
enables remote operations, permits deep discharge of notebook batteries and 
provides an extensive test reporting function.
5.4.2 Supporting Online Documentation
The PC-Doctor Diagnostic contains the following online information sources:
¨Online Technical Manual - selected at any time by pressing F1 key twice 
or by clicking on the Question Mark in the upper left hand corner of any 
PC-Doctor Menu
¨On-line Help system - provides context sensitive information from every 
PC-Doctor screen- accessed by pressing F1 key once (pressing F1 twice gets 
you into the online manual)
5.4.3 User Interface to PC-Doctor
PC-Doctor is structured as a text-mode, windowed user interface with pull-down menus. 
Program operation requires the use of the following keys:
¨Cursor Keys - Moves the highlighted pointer
¨Enter Key - Selects the highlighted option
¨Esc Key - Cancels current function and goes back one step
¨F1 Key - Activates the context-sensitive help feature (pressing F1 twice in a 
row calls up the online Technical Reference Manual for PC-Doctor)
Scrolling windows, which show the results of various operations, use the following keys: 
¨Page Up/Page Down - Moves the screen one page at a time
¨F2 - Prints the log to PRN
¨F3 - Saves the log to a file 
						

							                                                                                           Troubleshooting Procedures    5-13  
You can also use the mouse or Point to interact with PC-Doctor. The leftmost Select 
key is used to choose objects (menu entries and action codes typically enclosed in 
brackets). The rightmost Select key is equivalent to the Esc key which takes you back 
to your previous step.
5.4.4  Quitting PC-Doctor
To exit PC-Doctor, select the Quit pull down menu and then select the Quit option.
Note: For additional information, access the Online Reference Manual for 
PC-Doctor. 
						

							   Field Service   6-1
6
Field Service
6.1 Introduction
This section contains general  preventive and corrective maintenance procedures that 
apply to all members of the Extensa 60x and 65x Series Notebook Computers. The first 
part of the section describes the computer cleaning procedures and preferred handling 
procedures for sensitive components (e.g. disk drives, batteries).
The second part of the section identifies all field-replaceable parts; the remainder of the 
section contains removal and replacement procedures for the field-replaceable parts.
6.2 Preventive Maintenance
Preventive maintenance is limited to cleaning the plastic case, keyboard and the display 
screen.
6.2.1 Cleaning the Computer
When it is necessary to clean the plastic case and keyboard use a soft, lint-free cloth, 
slightly dampened with a mild detergent solution or use the contents of any 
commercially available computer cleaning kit.
Caution: Never  spray any liquids directly on the computer case, keyboard, 
or screen. If the liquid-crystal display (LCD) screen has become smeared 
or dusty, clean the screen first with a soft, clean, lint-free cloth and gently 
wipe the glass. If the glass is still smeared, use distilled water or a 25% 
solution of alcohol and distilled water.
Caution: Do not use paper towels to clean the display screen. Paper can 
scratch the display screen matte.
  
						

							6-2   Field Service 
6.2.2  Handling the Computer
The notebook computer requires reasonable care and handling for extended life. Some 
of the precautions to follow to protect your computer against accidental damage include:
¨Never pick up or carry the unit by the cover
¨Do not force the cover beyond its fully opened position (about 180 degrees)
¨Never subject the computer to harsh environments (dusty areas or areas of 
rapidly changing temperatures)
¨Never place anything on top of the computer, particularly when it is operating 
or charging (could result in overheating and damage to the computer).
¨Never move the computer while the hard drive is rotating (press the Suspend 
button to put the computer in a Sleep mode before closing cover).
¨Never expose the computer hard disk drive(s) or disks to strong magnetic 
fields such as those generated by transformers, speakers, or telephone 
handsets.
6.2.3  Handling the Computer Battery Pack
The battery pack furnished with the computer requires reasonable care and handling 
to ensure efficient operation and maximum life. Periodically inspect the battery 
terminals and the batteries for evidence of corrosion and oxide build-up; clean if 
necessary.
To ensure that the battery packs endure normal life cycle, always observe the following 
precautions when handling the battery packs:
¨Do not drop the battery pack or subject it to excessive shock and vibration.
¨Do not expose the battery pack to direct sunlight, moisture, or chemical 
compounds.
¨Do not disassemble the battery pack.
¨Do not use the battery pack to power other devices.
¨Do not short the battery leads or connect the battery with reversed polarity. 
¨Never attempt to charge the battery pack in any way other than as described 
in this manual.
¨Always charge the battery pack as soon as possible after a low battery 
indication.  
						

							Field Service    6-3
6.2.4 Password Caution
The notebook computer can be password protected to prevent unauthorized use. 
However, if the password is lost, the notebook must be returned to the Texas 
Instruments manufacturing facility in Temple, Texas U.S.A. to restore access. This 
service is not covered by warranty.
6.3 Required Tools and Equipment
All Extensa 60x and 65x Series Notebook corrective maintenance procedures can be 
performed using the following tools:
¨Tweezers
¨Plastic Stick
¨Small flat-blade screwdriver
¨Small Phillips screwdriver
Caution: All boards, options and peripherals contain components that are 
sensitive to static electricity. When handling any of these items, protect 
against static electricity by using wrist  grounding straps and grounded 
working mats. When moving or storing items, use the anti-static bags 
supplied with the items.
6.4 Notebook FRUs
For a listing and description of the notebook Field Replacement Units (FRUs), refer to 
the appendices in this manual for the appropriate models (e.g. Appendix A contains 
maintenance data from the 60x Series; Appendix B contains maintenance data for the 
65x Series.)
6.5 FRU Removal/Replacement Procedures
The following paragraphs contain field service-level removal/replacement procedures 
for the 60x/65x Series Notebook Computers.
 Most FRU removal/replacement procedures involve connecting and disconnecting  
						

							6-4   Field Service 
cable connectors. The Extensa series uses two types of connectors including:
¨Locking-type connectors - use a plastic stick to unlock and lock these type 
of connectors as shown in Figure 6-1.
¨Non-locking connectors
Figure 6-1  Removing/Installing Cables with Locking-Type Connectors
6.5.1 Removing/Replacing the Notebook Battery Pack
Before performing any of the assembly/disassembly procedures, always disconnect the 
AC adapter from the notebook and remove the battery pack. The procedure for removing 
and replacing the battery pack is as follows:
1.Turn off the computer and disconnect the AC adapter from the computer.
2.Unlatch the battery compartment door (right front corner of the unit) as 
shown in Figure 6-2.
3.Slide the battery compartment door out slightly and then swing the door 
outwards as shown in Figure 6-2.
4.Grasp the loop attached to the battery and pull the battery out of the 
Unplugging the 
CableConnecting the
Cable 
						

							Field Service    6-5
compartment.
5.Insert the replacement battery  with THIS SIDE UP label facing upwards 
until it snaps in place and then close the battery compartment door (reverse 
of Steps 2 and 3.
Figure 6-2.  Battery Removal/Replacement 
						

							6-6   Field Service 
6.5.2 Removing/Replacing PCMCIA Options
The procedure for removing and replacing the PCMCIA options is as follows:
1.Turn off the computer and remove the battery pack as described in Paragraph 
6.5.1.
2.Press the upper card eject button to eject the upper card, lower button 
controls the lower card and use both buttons for Type III devices.
3.To replace the PCMCIA device, remove any filler cards present and insert the 
device. Reinstall any external cabling required for the device.
Figure  6-3  Installing/Removing PCMCIA Options
One or two Type
I/ II PCMCIA Option
Cards or one Type III
Option CardPCMCIA Release
Buttons