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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.)

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.

 

(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 error

2-1-2-3

Occurrence of unexpected offering

2-2-3-1

Main board

(Note)  A beep sound is also issued in case of other I/O trouble.

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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. 
 

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. 

Stuck key on keyboard. 

Keyboard not working. 

Keyboard controller failed test. May require replacing keyboard controller. 

Unlock the system to proceed. 

System RAM failed at offset nnnn of in the 64k block at which the error was detected. 

Shadow RAM failed at offset nnnn of the 64k block at which the error was detected. 

Extended memory not working or not configured properly at offset nnnn. 

The CMOS clock battery indicator shows the battery is dead. Replace the battery and run 
Setup  to  reconfigure the system. 

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. 

The timer test failed. Requires repair of system board. 

Real-time clock fails BIOS test. May require board repair. 

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. 

Memory size found by POST differed from EISA CMOS. 
 
 

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Contact Panasonic Technical Support. 

CPU socket number for Multi-Processor error. 

ServerBIOS2 test error: Cannot write to EISA CMOS. 

ServerBIOS2 test error: Cannot write to extended DMA (Direct Memory Access) registers. 

ServerBIOS2 test error: Cannot generate software NMI (Non-Maskable Interrupt). 

ServerBIOS2 test error: Fail-Safe Timer takes too long. 

device address Conflict 

Address conflict for specified device. 

Run ISA or EISA Configuration Utility to resolve resource conflict for the specified device. 

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. 

Problem with NVRAM (CMOS) data. 

I/O device IRQ conflict error. 

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 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 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 ????. 

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.

 

 

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(1) Test Computer ································································································  1 unit 
(2) AC Adapter ·····································································································  1 pc. 
(3) External Printer ·······························································································  1 unit 
(4) Loopback Plug (Parallel Port Test) [ P/N: DFWV95C0081 ]  ···························   1 pc. 
(5) Loopback Plug (Serial Port Test for RS232C) [ P/N: DFWV95C0067 ]  ·········   1 pc. 
(6) Floppy Disk containg file DIAG  ·······································································   1 pc. 

 
 

 

(1)  Connect the AC Adapter and External Printer to the computer. 
(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. 
(5)  In order to test the parallel port with Loopback Plug, disconnect the printer cable and connect 

the parallel loopback plug with Power OFF. 

 

 

When “Enter password” is displayed, use “Password Skipping Plug” in order to skip the user 
password. 

1)  Connect the parallel plug to the parallel port. 
2)  Connect the PS/2 mouse plug to the mouse port 
3)  Power on the computer. 

 

The wiring of the parallel plug is described below. 
Connect pins 2-5-6-8-11-13-15-18-19-20-21-22-23 to Shield GND (PS/2 mouse plug pin3). 
Connect pins 3-4-7-9-10-12 to VC5 (PS/2 mouse plug pin4) with 4.7KW each. 

 
 
 

The plug described above must be used for servicing purpose only. 
Do not use it for other than the above purpose and ensure that it remains confidential. 
Using the plug enables the user to skip the previous password and disable the password.