CD-ROM Switches and Jumpers


                          DETERMINING TYPE

        Depending on the model type of CD-ROM drive, the SCSI address
        is set with switches (Type A) or jumpers (Type B/C) located on
        the rear of the drive.



                                      ____________________________________
        Internal CDROM Type-A        | Addr | Swi/Jmp | Swi/Jmp | Swi/Jmp |
         SCSI Switch Setting          ____________________________________
            (NOT 7210!!!)            |  0   |    -    |    -    |         |
                                     |  1   |    X    |    -    |         |
                                     |  2   |    -    |    X    |         |
       __TYPE A with switches___     |  3   |    X    |    X    |    -    |
    ON|                         |    |  4   |    -    |    -    |    X    |
      |  .   .   .   X   X   .  |    |  5   |    X    |    -    |    X    |
   OFF|  X   X   X   .   .   X  |    |  6   |    -    |    X    |    X    |
      |_________________________|    |______|_________|_________|_________|
         1   2   3   4   5   6

     Type A Bezel     Status Light     Unload Button
     __________________________|________|____
    |              __________  o       ===   |      QUICK IDENTIFICATION
    |   __________|Disk Caddy|____________   |    Type-A Status Light and
    |  |__________  opening   ____________|  |    Unload Button are above
    |            |__________| o  ====    |  |    the disk slot.
    |__|_______________________|____|_____|__|
                       Headphone    Volume Control



       When the model type of CD-ROM drive installed in a 7210 has address
    switches (Type A), all switches must be set to 0 (Off);


                          _________________________
                       ON|  _   _   _   _   _   _  |
                         | | | | | | | | | | | | | |
                      OFF| |X| |X| |X| |X| |X| |X| |
                         |_________________________|

                    Switch Setting for a Type-A in a 7210







     Internal CDROM Type-B             ____________________________________
      SCSI Switch Setting             | Addr | Jumper1 | Jumper2 | Jumper3 |
                                      |______|_________|_________|_________|
     (Jmp 6, 7, 8 Factory as shown)   |  0   |    -    |    -    |         |
    6- Enable Media Removal           |  1   |    X    |    -    |         |
    7- Enable Normal Drive Operation  |  2   |    -    |    X    |         |
    8- Disable Drive Terminator Power |  3   |    X    |    X    |    -    |
    _ TYPE B with jumpers _________   |  4   |    -    |    -    |    X    |
   | X   o   o   o       X         |  |  5   |    X    |    -    |    X    |
   | X   o   o           X         |  |  6   |    -    |    X    |    X    |
   |_1___2___3___4___5___6___7___8_|  |______|_________|_________|_________|

    QUICK IDENTIFICATION      Type-B bezel   Disk Caddy Opening
   Type-B Status Light and   __________________|______________________
   Unload Button are under  |    ______________|__________________    |
   the disk slot.           |   |_|_____________________________|_|   |
     Emergency Eject Hole ___________.                                | Unload
                            |   ===  =======               o    ==== __ Button
                            |____|_____|___________________|__________|
                                 |     |                   |
                          Headphone  Volume Control    Status Light






     Internal CDROM Type-C             ____________________________________
      SCSI Switch Setting             | Addr | Jumper1 | Jumper2 | Jumper3 |
    4- Enable Odd Parity              |______|_________|_________|_________|
    5- Sector Size                    |  0   |    -    |    -    |         |
    6- Enable Terminator              |  1   |    X    |    -    |         |
    7- Enable Terminator Power        |  2   |    -    |    X    |         |
                                      |  3   |    X    |    X    |    -    |
    _ TYPE C with jumpers _____       |  4   |    -    |    -    |    X    |
   | X   o   o   X   o      o |      |  5   |    X    |    -    |    X    |
   | X   o   o   X   o      o |      |  6   |    -    |    X    |    X    |
   |_1___2___3___4___5___6___7_|      |______|_________|_________|_________|

                              Type-C bezel
                             _________________________________________
                            |   ___________________________________   |
                            |  |___________________________________|  | Load/
                            |            |________________|           | Unload
                            |         ==                   .         __ Button
                            |__________|___________________|__________|
                                       |                   |
                                     Volume Control    Emergency Eject Hole