Panasonic Toughbook CF-W4HWEZZBM User manual

ORDER NO. CPD0604066C1
Personal Computer
CF-W4
Model No. CF-W4HWEZZBM
This is the Service Manual for
the following areas.
M …for U.S.A. and Canada
© 2006 Matsushita Electric Industrial Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.

CONTENTS
1 Read Me First. ....................................................................
1.1. Accessories ...........................................................
2 Specifications ....................................................................
3 Names and function of Parts ..........................................
4 Diagnosis & Repair ..........................................................
4.1. Basic Procedures .....................................................
4.2. Troubleshooting .......................................................
4.3. Connection Diagram ................................................
4.4. Power-on Self Test (Boot Check) .............................
5 Self Diagnosis Test ..........................................................
5.1. Outline of Self Diagnostic Test .................................
5.2. Automatic Test ..........................................................
5.3. Peripheral Test .........................................................
5.4. Test Selection ...........................................................
5.5. Error Messages and Troubleshooting ......................
6 Disassembly & Reassembly Instruction ...................
6.1. Disassembly Flow Chart .....................................
6.2. Disassembly ........................................................
6.3. Reassembly ........................................................
7 Explanation of Hardware ............................................
7.1. System Block Diagram ........................................
8 Main Unit Extended View ...........................................
8.1. Display section ....................................................
8.3. Bottom section ...................................................
9 Replacement Parts List ..............................................
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8.2. Cabinet section ...................................................
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LASER SAFETY INFORMATION
For U.S.A
Class 1 LASER-Product
This product is certified to comply with DHHS Rules 21 CFR Subchapter J.
This product complies with European Standard EN60825 (or IEC Publication 825)
For all areas
This equipment is classified as a class 1 level LASER product and there is no hazardous LASER radiation.
Caution:
(1) Use of controls or adjustments or performance of procedures other than those specified herein may result
in hazardous radiation exposure.
(2) The drive is designed to be incorporated into a computer-based system or unit which has an enclosing
cover. It should never be used as a stand alone drive.
Danger:
The serviceman should not remove the cover of drive unit and should not service because the drive unit is a
non-serviceable part.
Please check DANGER label on bottom cabinet of the equipment.
.Unplug the AC power cord and remove the battery pack from the equipment before opening the top cover of
the drive.
.When the power switch it on, do not place your eyes close to the top cover to look into the interior of the unit.
LASER Specification
Class 1 level LASER Product
Wave Length: DVD 650 660 nm
CD 778 787 nm
Laser safety information is appropriate only when drive with laser is installed.
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Usage
Avoid Direct Sunlight on the LCD Panel
The LCD panel should not be exposed to
direct sunlight or ultraviolet light.
Avoid Humidity, Liquids and Dust
Do not store or use the computer in loca-
tions exposed to high humidity, liquids
(including rain) or dust.
Prevent Shock
Avoid subjecting the computer to severe
vibrations or impact. Do not place the
computer inside a car trunk.
Avoid Radio Frequency Interference
Do not place the computer near a televi-
sion or radio receiver.
Avoiding Low-temperature Burns
Avoid more than casual contact with any
heat producing area of the notebook
computer, AC adaptor, and any option or
accessory you use with it. Even low heat,
if warmer than body temperature, can
cause a burn, if the skin is exposed to the
heat source for a long period of time.
Handling
Avoid Magnetic Fields
Keep the computer away from magnets.
Data stored on the hard disk may be lost.
Avoid Stacking
Do not place heavy objects on top of the
computer.
Do Not Disassemble the Computer
Do not disassemble the computer using
methods other than those shown in this
manual.
This computer contains high-voltage
parts, contact with which may result in
electrical shock. Modification or incorrect
disassembly may result in fire.
Avoid Excessive Force on the Display
Do not apply excessive downwardforce
on the display.
Avoid Extreme Heat and Cold
Do not store or use the computer in loca-
tions exposed to heat, direct sunlight, or
extreme cold.
Avoid moving the computer between
locations with large temperature differ-
ence.
Operation: 5 °C to 35 °C {41 °F to 95 °F}
Storage: -20 °C to 60 °C {- 4 °F to 140 °F}
Cables
Use of an interface cable longer than 3m(9.84feet)
is not recommended.
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Precautions

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Handling
This computer has been designed so as to minimize shock to the LCD and hard disk drive, etc.,
but no warranty is provided against such trouble. Therefore, as a precision instrument, be
extremely careful in the handling.
Do not carry the computer while the display is open, or carry it by gripping the display or the
cabinet around the display (see figure A). When closing the display, ensure that the latch is
positioned correctly in the slot .
Do not carry your computer when the power is on.
Do not drop or hit your computer against solid objects.
Remove all external devices, cables, PC Cards sticking out of the computer (see figure B),
SD memory cards, and MultiMedia Cards before transporting the computer.
We recommend preparing a fully charged battery pack.
When transporting a spare battery pack inside a package, briefcase, etc., it is recommended
that it be placed in a plastic bag so that its contacts are protected.
Always carry your computer with you. Never check it in with luggage. For use of the com-
puter inside an aircraft, we recommend asking the airlines regarding their policy on this issue.
It is a good idea to make backup copies on disks and carry them with you.
A
B
Touch Pad
Display
Avoid using water when cleaning the panel. Ingredients included in water may leave scratches
and reduce readability of the screen.
<When cleaning dust/dirt>
Avoid rubbing off dust/dirt with cloth since it may leave scratch on the screen.
Sweep dust/dirt with fine brush, then wipe it with a dry soft cloth used for cleaning glasses.
<When cleaning oily surface>
Apply camera lens cleaner on a soft gauze and clean it with gentle force. Then, wipe with a
dry soft cloth used for cleaning glasses.
Areas excluding the display
Wipe these areas with a soft cloth, after applying water or detergent diluted with water to the
soft cloth and firmly wringing out excess water.
Maintenance
Do not use benzene, thinner, or rubbing alcohol. Doing so may adversely affect the
surface, e.g., discoloration. In addition, do not use commercially-available household
cleaners and cosmetics, as they may contain components harmful to the surface.
Do not directly add or spray water or detergent. If liquid enters the inside of the
computer, it may cause it to work improperly or be damaged.
CAUTION
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