Panasonic CF-18JHU70TW Service Manual
ORDER NO. CPD0604058C0
Notebook Computer
CF-18
Model No. CF-18JHU70TW
This is the Service Manual for
the following areas.
W …for Japan
© 2006 Matsushita Electric Industrial Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.
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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 nonserviceable 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.
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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
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.
z Start .............Test begins automatically when power switch is set to ON.
z 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:
(1 (long sound) -2-3-4)
(Length of bar shows length of sound.)
= long sound (about 0.4 sec.),
z Table of errors classified by beep sounds
Diagnosis Beep signal sound Error message
Main board
(Note) A beep sound is also issued in case of other I/O trouble.
1(long sound)-2 BIOS ROM 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
= short sound (about 0.2 sec.), Length between sounds is about 0.1 sec.
BIOS ROM error
RAM error
Keyboard controller error
RAM error
RAM error
RAM error
BIOS ROM error2-1-2-3
Occurrence of unexpected offering2-2-3-1
2-1
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.
3-1
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.
Troubleshooting
3-2
4 Diagnostic Test
Diagnostic Test Procedure
4.1. Equipment
(1)
Test Computer --------------------------------------------------------------------------
(2)
External Floppy Disk Drive (USB Port) ------------------------------------------
(3)
AC Adapter -----------------------------------------------------------------------------
(4)
Loopback Plug (Serial Port Test for RS232C) [P/N: DFWV95C0067] ----
(5)
Floppy Disk containing file DIAG ---------------------------------------------------
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.
1 unit
1 unit
-
1 pc.
1 pc.
-
1 pc.
-
4-1
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
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.
Return the setup
contents to default
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.
Choose test from
the menu screen
to start the test.
Caution:
After completing repairs, be sure
to carry out the Automatic test
and Peripheraltest.
Menu Screen
1. DIAG on FD (CF-18 XP/2000 Model
2. DIAG on FD (CF-18 T ab let 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 ] ?
)
)
)
<Automatic test> <Peripheral test> <Test selection>
Tests selected (O) from the test
item list will be performed in
succession.
DIAG on FD
Problems in the unit are located and divided according
to error messages that occur during testing.
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.
5-1
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