Tascam DM-24 Service Manual page 26

CAUTION:
NEVER switch off the power when the screen reads any of the
messages shown in step 8. If you did so, run the following pro-
cedure because, even if the unit seemingly works dependably,
the correct operation is not guaranteed.
[If you switched off the power after having played the
flash.mid/panel.mid file and when a specific message is
shown in step 8]:
Recycling the power would result in a totally white or black
screen, the unit not working properly. To get around the prob-
lem, run the following procedure.
a) Remove the ROMs (U6, U7, and U31) on the MAIN PCB
and use the ROM WRITER to run the Program Update.
b) Install the ROMs removed in step a) and switch on power to
the DM-24. Powered up, it shows the screen you were at in
step 4.
c) For the flash.mid file, repeat steps 5-8 corrrectly.
d) When the DM-24 automtically restarts after you have per-
formed step 8, if nothing goes wrong with the restart, you
can think that the Program Update was successfull.
[If you switched off the power after having played any
other than the flash.mid/panel.mid file and when a specific
message is shown in step 8]:
a) Switch on power to the DM-24 and it starts showing the
screen you were at in step 4.
b) For the .mid file during the play of which you switched off
the power, repeat steps 5-8.
c) The DM-24 automtically restarts after you have performed
step 8, then perform steps 1-8 correctly for the remaining
.mid files.
d) When you have done with all the .mid files, the Program
Update is complet.
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TASCAM DM-24