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  1. #1
    Join Date
    Oct 2010


    I run a computer service business. One of my clients is a machinist. He owns a JAPAX JAPT 3F Wire EDM. He uses it in conjunction with a JAPAX E-JAPT computer, on which he inputs the calculations needed for cutting the parts. The computer uses two 5.25" floppy drives. You must insert two separate floppies in order to use this computer.

    Correct me if I am wrong, but I assume the computer has a ROM containing some sort of CMOS, which then loads a small OS off of the first floppy. It then proceeds to load a program off of the second floppy with which you set your calculations. Is my assumption correct, or at least somewhat close? I saw the unit in action, so therefore I am able to do some guesswork concerning how it works.

    After my client finishes entering his calculations, he saves them onto a cassette tape (the drive is built into the E-JAPT computer). He then ejects the tape and places into another tape drive in the wire EDM machine. The machine then reads the information and performs the cutting.

    My client has the problem, that one of the floppy disks is malfunctioning. He was able to borrow another floppy from a friend, but obviously must return it once he's finished cutting. He asked me if I could copy his friend's floppy onto another disk. I have a 5.25" drive in one of my old PC's, however I can't access the data. It must be written in a file format that neither MS-DOS nor Windows can read.

    Q 1) Does anyone know how these disks can be accessed and copied? Can it be done with a regular PC? Is there a program, emulator or other operating system that I can use to access the data and make copies?

    Q 2) If one of the floppy drives in the E-JAPT breaks, which type of drive can be used to replace it? This machine is about 25 years old from what I can tell.

    Q 3) Can the E-JAPT be replaced by a regular PC running a compatible software and / or operating system?

    Q 4) Are there more modern applications that can be used to make the necessary calculations and transfer them over to the EDM machine? Even if the software runs under MS-DOS, it's already MUCH easier for me to set up and service. Again, if the E-JAPT breaks, it would be great to have a simple replacement as an alternative.

    Thanks in advance for any help you guys can provide!

  2. #2
    Join Date
    Apr 2009


    hello mate

    i used to run a japax edm but mine had a 3.5" fdd but it was some weird jap format but i do know that you can copy these disks on the machine you need a wizard disk to copy the files. you used to be able to get these disks from sodick edm your custmer will know who these peple are!

    by the sounds of it if one of the drives is broke you need a new drive any way
    one for system disk and one for data disk

    good luck hope you fix the problem

  3. #3
    Join Date
    Feb 2009

    jap 3J

    hi i need manual guide for Japax japt 3J.
    If somebody have please contact me.

  4. #4
    Hi everyone , please your support is needed , we have a JAPAX LU3B VH02 1984 , is broken by now and we have not manuals Electronics , can someone tell me how can get them?

  5. #5
    Junior Member
    Join Date
    Nov 2018


    I have a problem with the RS-232 of an EDM Japax LU3B FE02, it marks me on the "error tape Reader" screen and does not pass the program I send. Only on two occasions did I frame ISO error No. 004
    but since then I can not load any program, help please.

  6. #6
    Junior Member
    Join Date
    Feb 2019
    Quote Originally Posted by hectromex View Post
    I have a problem with the RS-232 of an EDM Japax LU3B FE02, it marks me on the "error tape Reader" screen and does not pass the program I send. Only on two occasions did I frame ISO error No. 004
    but since then I can not load any program, help please.
    I think I can help

  7. #7
    Junior Member
    Join Date
    Mar 2019
    I had this problem too because i was pushing the STORE button too quickly. You have to wait for a prompt. Then push the store button and do the start sequence.

    Push 19 STORE ;this get the NC ready
    13 STORE ;this enter the edit mode
    D9999 STORE ;this clear all the memory
    / STORE ;this return to the NC MENU
    8 STORE ;this command the loading
    1 STORE ; this select the source 0=RAM and 1=BUFFER(or TAPE)
    **Wait for the prompt**
    STORE ;this prepare the machine to start
    Then push these buttons: WIRE, TENSION, WATER, STAR and PROGRAMM.

    Also if the wire touch the piece to cut it won't start. Make your tangent(zeroing) before.
    Last edited by denisduperre; 03-01-2019 at 02:59 AM.

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