Panasonic Toughbook CF-18NHHZXBM User manual

ORDER NO. CPD0604070C1
Notebook Computer
CF-18
Model No. CF-18NHHZXBM
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.

This apparatus must be earthed for your safety.
To ensure safe operation the three-pin plug must be inserted only into a standard three-pin power point
which is effectively earthed through the normal household wiring.
Extension cords used with the equipment must be three-core and be correctly wired to provide connec-
tion to earth. Wrongly wired extension cords are a major cause of fatalities.
The fact that the equipment operates satisfactorily does not imply that the power point is earthed and
that the installation is completely safe.
For your safety, if you have any doubt about the effective earthing of the power point, consult a quali-
fied electrician.
FOR YOUR SAFETY PLEASE READ THE FOLLOWING TEXT CAREFULLY
This appliance is supplied with a moulded three pin mains plug for your safety and convenience.
A 3 amp fuse is fitted in this plug.
Should the fuse need to be replaced please ensure that the replacement fuse has a rating of 3 amps and
that it is approved by ASTA or BSI to BS 1362.
Check for the ASTA mark or the BSI mark on the body of the fuse.
If the plug contains a removable fuse cover you must ensure that it is refitted when the fuse is replaced.
If you lose the fuse cover the plug must not be used until a replacement cover is obtained.
A replacement fuse cover can be purchased from your local Panasonic Dealer.
IF THE FITTED MOULDED PLUG IS UNSUITABLE FOR THE SOCKET OUTLET IN YOUR
HOME THEN THE FUSE SHOULD BE REMOVED AND THE PLUG CUT OFF AND DISPOSED
OF SAFELY.
THERE IS A DANGER OF SEVERE ELECTRICAL SHOCK IF THE CUT OFF PLUG IS INSERTED
INTO ANY 13 AMP SOCKET.
If a new plug is to be fitted please observe the wiring code as shown below.
If in any doubt please consult a qualified electrician.
Warning: THIS APPLIANCE MUST BE EARTHED.
Important
The wires in this mains lead are coloured in accordance with the following code:
Green-and-yellow: Earth
Blue: Neutral
Brown: Live
As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured
markings identifying the terminals in your plug, proceed as follows:
The wire which is coloured GREEN-and-YELLOW must be connected to the terminal in the plug
which is marked by the letter E or by the safety earth symbol coloured GREEN or GREEN-and-
YELLOW.
The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or
coloured BLACK.
The wire which is coloured Brown must be connected to the terminal which is marked with the letter L
or coloured RED.
The mains plug on this equipment must be used to disconnect the mains power.
Please ensure that a socket outlet is available near the equipment and shall be easily accessible.
How to replace the fuse
Open the fuse compartment with a screw-
driver and replace the fuse.
Warnings
This equipment is not designed for connection to an IT power system.
(An IT system is a system having no direct connections between live parts and Earth; the exposed-conducive-
parts of the electrical installation are earthed.
An IT system is not permitted where the computer is directly connected to public supply systems in the U.K.)
Disconnect the mains plug from the supply socket when the computer is not in use.
This equipment is produced to BS800/1983.
For U.K.
WARNING
1

2
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 PD-drive unit.
• Unplug the AC power cord to the equipment before opening the top cover of the drive.
When the power switch it on, do not place your eyes close to the front panel door to look into the interior of the unit.
LASER Specification
Class 1 level LASER Product
Wave Length: DVD 658±8 nm
CD 775~815 nm
Laser safety information is appropriate only when drive with laser is installed.

3

4

CONTENTS
1 Diagnosis Procedure ······································································································1-1
2 Power-On Self Test (Boot Check) ··················································································2-1
3 List of Error Codes ··········································································································3-1
4 Diagnostic Test ···············································································································4-1
5 Self Diagnosis Test ·········································································································5-1
6 Wiring Connection Diagram ···························································································6-1
7 Disassembly/Reassembly ······························································································7-1
8 Exploded View ················································································································8-1
9 Replacement Parts List ··································································································9-1

1-1
1 Diagnosis Procedure
1.1. Basic Procedure

1-2
Please take note of the following two points with regard to troubleshooting:
1. Know-how of diagnosis upon occurrence of heavy troubles, e.g. ‘Set cannot be turned ON’, ‘Set fails to start’, ‘No display on
screen’, etc.
2. Explanation of each trouble, mainly symptom of trouble in operation.
Flow Chart
NG
NO
YES
NO
YES
NG
NO
YES NG
OK
OK
NO
YES
NG
OK
NG
OK
NO
YES
OK
OK
NG
START
START
Pay attention to the following points when in pursuit of the cause of a troubleshooting.
1. Peripheral apparatus connected with the set should all be removed before operation check.
2. Make sure that cables, boards, etc. are not coming off, and recheck the contact condition.
Set cannot be supplied with current.
Power lamp fails to light up.
AC
Adaptor/Battery
Output voltage
Replace AC Adaptor/Battery
Return set-up utility setpoint to the state of ‘delivery from factory’.
Make sure of contact of K/B connector in use.
Replace keyboard or main board.
Replace DVD drive.
Replace main board.
Reinstall HDD.
Replace main board.
Power lamp
check
Check contact condition of power input terminal. Replace i
f
defective.
Check Power SW. Replace if defective.
Inverter board Replace inverter board.
Check inverter cable continuity. Replace if defective
Replace LCD back light.
BIOS operation
chec
k
Replace main board (Check fuse at power source).
LCD unit
check Replace LCD unit.
Result of
POST
Refer to POST
error code table. Replace main board.
Main board
check Replace main board
HDD access
Check HDD cable connection and continuity.
Replace if defective.
Replace HDD & Reinstall.
Replace main board.
Set-up utility
starting Replace main board.
Trouble
symptoms on some
of DVD or CD
Check if there are any flaws on DVD or CD
media. Since flaws may appear on specifi
c
media, DVD or CD media can be defective.
START
END
Dark display on screen.
Screen fails to display.
Failure in starting
Not displayed properly on screen.
Some or all keys cannot be input.
DVD/CD CALL not practicable.
Starts but operates unstably.
Heavy trouble e.g.,
‘Set cannot be turned
ON’, ‘Set fails to start’,
‘No display on
screen’, etc.
Each kind of
trouble in
operation.
*Clean DVD-ROM drive with an applicator.
LCD back
light lighting
1.2. Troubleshooting

2-1
2 Power-On Self Test (Boot Check)
Outline of POST
The set has a boot check function called POST (Power-On Self Test) in it. The condition of the main body is diagnosed by checking
beep sound or error code.
Start .............Test begins automatically when power switch is set to ON.
Normal finish .....After memory checking, a beep sound is issued once and the set is placed into automatic stop.
Note: If no error occurs, nothing is displayed. (No display of OK, etc.)
Error Diagnosis by Checking Beep Signal Sound
The beep sound is as follows:
= long sound (about 0.4 sec.), = short sound (about 0.2 sec.), Length between sounds is about 0.1 sec.
Table of errors classified by beep sounds
(1 (long sound) -2-3-4)
(Length of bar shows length of sound.)
Diagnosis Beep signal sound Error message
1(long sound)-2 BIOS ROM error
BIOS ROM error
RAM error
Keyboard controller error
RAM error
RAM error
RAM error
1-2-2-3
1-3-1-1
1-3-1-3
1-3-4-1
1-3-4-3
1-4-1-1
BIOS ROM error2-1-2-3
Occurrence of unexpected offering2-2-3-1
Main board
(Note) A beep sound is also issued in case of other I/O trouble.

3-1
3. List of Error Codes <Only when the port replicator is connected>
The following is a list of the messages that BIOS can display. Most of them occur during POST.
Some of them display information about a hardware device, e.g., the amount of memory
installed. Others may indicate a problem with a device, such as the way it has been configured.
Following the list are explanations of the messages and remedies for reported problems.
If your system displays one of except the messages marked below with an asterisk (*), write
down the message and contact Panasonic Technical Support. If your system fails after you make
changes in the Setup menus, reset the computer, enter Setup and install Setup defaults or correct
the error.
0200 Failure Fixed Disk
Fixed disk in not working or not configured properly. Check to see if fixed disk is attached
properly. Run Setup. Find out if the fixed-disk type is correctly identified.
0210 Stuck key
Stuck key on keyboard.
0211 Keyboard error
Keyboard not working.
0212 Keyboard Controller Failed
Keyboard controller failed test. May require replacing keyboard controller.
0213 Keyboard locked - Unlock key switch
Unlock the system to proceed.
0230 System RAM Failed at offset: nnnn
System RAM failed at offset nnnn of in the 64k block at which the error was detected.
0231 Shadow RAM Failed at offset: nnnn
Shadow RAM failed at offset nnnn of the 64k block at which the error was detected.
0232 Extended RAM Failed at offset: nnnn
Extended memory not working or not configured properly at offset nnnn.
0250 System battery is dead - Replace and run SETUP
The CMOS clock battery indicator shows the battery is dead. Replace the battery and run
Setup to reconfigure the system.
*0251 System CMOS checksum bad - Default configuration used
System CMOS has been corrupted or modified incorrectly, perhaps by an application
program that changes data stored in CMOS. The BIOS installed Default SETUP Values.
If you do not want these values, enter Setup and enter your own values. If the error persists,
check the system battery or contact Panasonic Technical Support.
0260 System timer error
The timer test failed. Requires repair of system board.
0270 Real time clock error
Real-time clock fails BIOS test. May require board repair.
*0280 Previous boot incomplete - Default configuration used
Previous POST did not complete successfully. POST loads default values and offers to run
Setup. If the failure was caused by incorrect values and they are not corrected, the next boot
will likely fail. On systems with control of wait states, improper Setup settings can also
terminate POST and cause this error on the next boot. Run Setup and verify that the
wait-state configuration is correct. This error is cleared the next time the system is booted.
0281 Memory Size found by POST differed from EISA CMOS
Memory size found by POST differed from EISA CMOS.

3-2
02D0 System cache error - Cache disabled
Contact Panasonic Technical Support.
02F0: CPU ID:
CPU socket number for Multi-Processor error.
02F4: EISA CMOS not writable
ServerBIOS2 test error: Cannot write to EISA CMOS.
02F5: DMA Test Failed
ServerBIOS2 test error: Cannot write to extended DMA (Direct Memory Access) registers.
02F6: Software NMI Failed
ServerBIOS2 test error: Cannot generate software NMI (Non-Maskable Interrupt).
02F7: Fail - Safe Timer NMI Failed
ServerBIOS2 test error: Fail-Safe Timer takes too long.
device address Conflict
Address conflict for specified device.
Allocation Error for: device
Run ISA or EISA Configuration Utility to resolve resource conflict for the specified device.
Failing Bits: nnnn
The hex number nnnn is a map of the bits at the RAM address which failed the memory test.
Each 1 (one) in the map indicates a failed bit. See error 230,231 or 232 for offset address of
the failure in System, Extended or Shadow memory.
Invalid System Configuration Data
Problem with NVRAM (CMOS) data.
I/O device IRQ conflict
I/O device IRQ conflict error.
Operating System not found
Operating system cannot be located on either drive A: or drive C: Enter Setup and see if
fixed disk and drive A: are properly identified.
Parity Check 1 nnnn
Parity error found in the system bus. BIOS attempts to locate the address and display it on
the screen. If it cannot locate the address, it displays ????. Parity is a method for checking
errors in binary data. A parity error indicates that some data has been corrupted.
Parity Check 2 nnnn
Parity error found in the I/O bus. BIOS attempts to locate the address and display it on the
screen. If it cannot locate the address, it displays ????.
Press <F1> to resume, <F2> to Setup
Displayed after any recoverable error message. Press <F1> to start the boot process or <F2>
to enter a Setup and change the settings. Write down and follow the information shown on
the screen.

4-1
4. Diagnostic Test
4.1 Equipment
(1) Test Computer ································································································ 1 unit
(2) External Floppy Disk Drive ············································································· 1 unit
(3) AC Adapter ····································································································· 1 pc.
(4) Loopback Plug (Serial Port Test for RS232C) [ P/N: DFWV95C0067 ] ········· 1 pc.
(5) Floppy Disk containg file DIAG ······································································· 1 pc.
4.2 Preparation
(1) Connect the AC Adapter and External Equipments.
(2) The System Setup should be set to the factory setting values by executing the “SETUP
UTILITY” which can be invoked by F2 key at the POST.
If not, the messages and items of the diagnostic test may not be displayed properly on the
LCD.
(3) The serial port must be enabled in the “SETUP UTILITY” in order to execute the “1st SERIAL
PORT” test.
(4) Connect the serial loopback plug.

Insert the diagnostics floppy disk
Starting up the setup utility
Turn on the power.
When "Panasonic Press F2 to enter setup" appears
on the screen, press F2.
Press " " to select Exit
Press " " to select Get default value
Press Enter.
Choose Yes for "Load default Configuration now?"
Select "Save Values & Exit" and press Enter.
Choose Yes for "Save Configuration changes and exit now?"
and press Enter.
Return the setup
contents to default
Choose test from
the menu screen
to start the test.
Menu Screen
1. DIAG on FD (CF-18 XP/2000 Model)
2. DIAG on FD (CF-18 Tablet Model)
3. LAN Test
4. Modem Test
5. Wireless LAN test (Wireless LAN Model only)
6. Button Test
Q. Quit
Select please [ 1, 2, 3, 4, 5, 6, Q ] ?
Caution:
After completing repairs, be sure
to carry out the Automatic test
and Peripheraltest.
<Automatic test> <Peripheral test> <Test selection>
Tests selected (O) from the test
item list will be performed in
succession.
DIAG on FD
The parallel port and CD-ROM
drive can be tested.
(See 5.3 for details.)
3. LAN Test
4. Modem Test
5. Wireless LAN test (Wireless LAN Model only)
6. Button Test
Specifc tests required can
be freely selected and
performed from the test item
list.
Be sure to carry out the Selection
test only when necessary.
Problems in the unit are located and divided according
to error messages that occur during testing.
5 Self Diagnosis Test
Floppy disk is Included for the self-diagnostic tests that should be performed before using this product.
Important notice
1. System password
If the password function has been turned on, you will need to ask the user for the password
before performing the self-diagnostics.
2. FDD test
Performing the FDD test will erase the contents of the floppy disk you insert into the drive. Use
a formatted disk that has no contents or whose contents are not required. This product has a
password function. However, if this function is turned on, the self-diagnostics tests will not work.
5.1. Outline of Self Diagnostic Tests
5-1

5.1.1 List of main test items
1SPEAKER TEST Speaker test
2VESA MODE TEST VESA mode test
3A20 GATE TEST Address A20 line
4CACHE ON/OFF TEST Cache memory on/off test
5NPU OPERAND TEST Floating point processor function test
6RAM STANDARD TEST Memory standard test
7DMA PAGE REG TEST DMA page register test
8DMA REGISTER TEST DAM register test
9DMAC TRANSFER TEST DAM transfer test
10 PIC HALT INSTRUCTION TEST Interrupt controller halt instruction test
11 PIC REGISTER TEST Interrupt controller register test
12 RTC CMOS RAM TEST Real time clock CMOS test
13 RTC TEST Real time clock test
14 PIT CH0 TEST interrupt timer CH0
15 PIT CH1 TEST interrupt timer CH1
16 PIT CH2 TEST interrupt timer CH2
17 KEYBOARD REG TEST Keyboard test
18 PS/2 MOUSE REG Mouse registration test
19 SERIAL WRAP TEST Serial loop back (jig required)
20 SERIAL ALL INTERNAL TEST Serial port interior test
21 PARALLEL REGISTER R/W Parallel register R/W test
22 PCIC ALL TEST PCIC test
23 Card Bus Reg Card Bus register test
24 USB Reg USB register test
25 VGA ALL TEST VGA test
26 SVGA RAM TEST SVGA RAM test
27 FD WT/RD/WP TEST FD WT, RD WP test
28 HDD ALL TEST Only HDD lead test selected
29 ECP REGISTER R/W ECP register R/W test
30 EPP REGISTER R/W EPP register R/W test
31 EXT. CMOS R/W TEST Extension CMOS R/W test
Test condition save/play
Test automatic execute
Error display (Paging style)
5.2. Automatic Test
Test execution
From the menu screen shown below For Celeron models Select and press Enter for DIAG on FD
RAM (Memory related)
CONTROL
(Control ICs on the main
board, etc.)
IO
(Input-output)
COMMUNICATION
Following file command
Test executed on run settings by selecting command
Select displayed items Error, Log, Option
menu screen
VIDEO
(Display related)
DISK
(FDD, HDD)
UNIQUE
(Individual functions)
Test function settings
AUX
(Auxiliary functions)
The Selection item displays the items selected under Automatic test. If you select Automatic test, these test items
will be performed automatically. You can use Selection test to choose items from the menu screen that you want to
have tested.
These items are shown below.
CPU
(CPU related)
5-2
1. DIAG on FD (CF-18 XP/2000 Model)
2. DIAG on FD (CF-18 Tablet Model)
3. LAN Test
4. Modem Test
5. Wireless LAN test (Wireless LAN Model only)
6. Button Test
Q. Quit
Select please [ 1, 2, 3, 4, 5, 6, Q ] ?

Speaker test, VESA test
Serial loop back test
Diagnostics result
Quitting the test
At the screen shown below, simultaneously press the ALT and X keys.
5.3. Peripheral Test
Test execution
From the menu screen shown below, be sure to choose the following items and press Enter.
3. LAN Test
(Wireless LAN Model only.)
This test checks for internal LAN device.
Choose LAN test and press Enter.
4. Modem Test
5. Wireless LAN Test
The speaker test involves listening to music and choosing OK or Not okay. The VESA test involves looking at
the display to see if it is satisfactory then choosing OK or Not okay.
The Automatic test’s initial settings are set so that the serial loop back test will be executed. Connect the serial
loop back jig and then perform the test.
(This test is not executed on default mode)
If no errors occur. The screen shows the word "Pass" in large letters.
If errors occur. The test is stopped when an error occurs and the error message is displayed.
For explanations of error messages, see Error Messages and Problem Categories (section 5.5).
menu screen
Input screen
5-3
1. DIAG on FD (CF-18 XP/2000 Model)
2. DIAG on FD (CF-18 Tablet Model)
3. LAN Test
4. Modem Test
5. Wireless LAN test (Wireless LAN Model only)
6. Button Test
Q. Quit
Select please [ 1, 2, 3, 4, 5, 6, Q ] ?

5 .4. Test Selection
Starting up the input menu
1. From the menu screen shown below, choose Quit and press Enter.
2. When A: \DIAG appears, input "JDG_185" and press Enter.
3. The input screen shown below will appear.
To choose menu items, hold down "ALT" and press the selection key.
5-4
menu screen
1. DIAG on FD (CF-18 XP/2000 Model)
2. DIAG on FD (CF-18 Tablet Model)
3. LAN Test
4. Modem Test
5. Wireless LAN test (Wireless LAN Model only)
6. Button Test
Q. Quit
Select please [ 1, 2, 3, 4, 5, 6, Q ] ?

Input screen startup
1. Reading the test conditions settings file
Press "AL T" and "F".
Press "L".
Press "AL T" and "C".
Starting the test
Press "AL T" and "R".
Press "R".
This will start the test.
End of test
Example:
"AL T" + "F" brings up the File menu.
Order of test flow selection
If the test condition settings
file is not read, this means
the test program is not running correctly .
2. setting the test items
Press "AL T" and "S".
Press "S".
Choose the test item and press Enter .
Choose the test whose settings are
to be changed, press "A" for Additional
and "R" for Erase.
All initial V Alues are "0" so set
tests other than the necessary ones to "1".
Press "C" twice to return the menu screen.
To save the selected list, press "AL T" and "F" at the file menu.
Saving selected test items
If you change the file name when
saving the file in step , you can
create test condition settings for
custom test items.
Example:
CF-18 .
TEST1.
Input screen
5-5

5.5. Error Messages and Troubleshooting
Test classification Screen display test items Contents
1A20 GATE TEST Address 20 line
2CACHE ON/OFF Cache memory on/off
3NPU OPERAND TEST Floating point processor function
4 RAM (Memory related) RAM STANDARD Memory standard
5DMA PAGE REG TEST DMA page register
6DMA REGISTER TEST DAM register
7DMAC Transfer TEST DAM transfer test
8PIC HALT INSTRUCTION TEST Interrupt controller
9PIC REGISTER TEST Interrupt controller
10 RTC CMOS RAM TEST Real time clock CMOS
11
12 SPEAKER TEST Speaker
13 PIT CH0 TEST Interrupt timer CH0
14 PIT CH1 TEST Interrupt timer CH1
15 PIT CH2 TEST Interrupt timer CH2
16 KEYBOARD REG TEST Keyboard
17 PS/2 MOUSE REG Mouse
18 SERIAL WRAP TEST Serial loop back (jig required)
19 SERIAL ALL INTERNAL TEST Serial port
20 PARALLEL REGISTER R/W Parallel register
PCIC ALL TEST PCIC
Card Bus REG Card Bus port
USB REG USB port
22 VGA ALL TEST VGA
23 SVGA RAM TEST SVGA RAM
24 VESA MODE TEST VESA mode
25 FD WT/RD/WP TEST FD write/read/write protection
26 HDD ALL TEST Only HDD lead selected
27 ECP REGISTER R/W Parallel port
28 EPP REGISTER R/W Parallel port
29 EXT. CMOS R/W TEST Extension CMOS R/W test
COMMUNICATION
IO
(Input-output)
CONTROL
(Control ICs on the
main board, etc.)
The table below explains the parts that may be faulty or damaged should an error message occur while performing the
various test items of the self diagnostics program.
CPU
(CPU related)
21
AUX
(Auxiliary functions)
DISK
(FDD, HDD)
UNIQUE
(Individual functions)
VIDEO
(Display related)
5-6

6 Wiring Connection Diagram
6-1
CN6
CN14
CN9CN3
CN25
CN27
CN16
CN1
CN901
CN900
CN2
CN24
CN5
CN11
CN4
CN15
CN23 CN35
CN30
CN12
CN37
CN17 CN8
CN18
CN7
MAIN PCB
RTC
BATTERY
TOUCH PAD
H/P
USB PORT
USB PORT
SPEAKER
LAN-
AUX
KEYBOARD
MIC
DC-IN
CN880
CN883 JK880
I/O PCB
JK902
J1
J2
JK901
CN901
CN902
CN900
AUDIO PCB
MODEM PCB
PAD PCB
CN802
CN801
CN800
J1
J5
J6
I/F PCB
INVERTER PCB
TS PS2 PCB
BACK LIGHT
CN850
CN841
LED PCB
WIRELESS
MODULE
SW PCB
CN950
MODEM
PORT
LAN PORT
MAIN
BATTERY
HDD
PMCIA UNIT
Touch
Screen
Panel
LCD
CN881
CN880
LAN-
MAIN
CN1
CN2
CN3 CN5
CN4
ANT PCB
GPRS
SERIAL PORT
EXTERNAL
DISPLAY
PORT
SW4
POWER
CN21
CN891
SD PCB

7-1
7 Disassembly/Reassembly
Note:
Power off the computer. Do not shut down to the Suspend or hibernation mode.
Do not add peripherals while the computer is in the Suspend or hibernation mode; abnormal operation may result.
7.1. Disassembly Instructions
7.1.1. Preparation
Before disassembling, be sure to make the following prepara-
tions.
• Shut down Windows and turn off the power.
• Disconnect the AC adaptor.
• Remove the optional DIMM memory card and PCMCIA card
if they are connected.
• Remove other devices if they are connected.
Attention:
• Please execute writing BIOS ID when you exchange the
Main Board.
• Parts (Sheet and rubber) etc. related various the Conductive
Cloth and Heat Spreader cannot be recycled. Use new parts.
7.1.2. Removing the Battery Pack and
HDD Pack
1. Open the Battery Cover.
2. Remove the Battery Pack.
3. Open the HDD Cover.
4. Remove the HDD Pack.
5. Remove the two Screws <A>.
6. Remove the HDD Case A and the HDD Case B.
7. Remove the HDD.
Screws <A>:DFHE5025XA
7.1.3. Removing the Touch Pad and Key-
board
1. Remove the Palm Rest Ass'y.
Note:
The Palm Rest Ass'y is firmly fixed with two-sided
tape.
Carefully remove the Palm Top Cover Sheet not to
damage it.
2. Remove the four Screws <B>.
1
2
3
Battery Pack
HDD Pack
HDD Case B
HDD Case A
HDD FPC
HDD
Heater
<A>
<A>
Hooks
Hooks
<B>
<B>
<B>
KBD Plate
KBD Plate
Palm Rest Ass'y
<B>