Yamaha Vintage DX7 Special Edition ROM Manuel d'instruction - Page 7

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Yamaha Vintage DX7 Special Edition ROM Manuel d'instruction
the power switch is TURNED OFF and the power cord
i.
unplugged.
Also
di
sconnect
.
any MIDI, OUTPUT
or
FOOT
CONTROLLER cables connected to the
unit.
12)
Remove the 5
Phi
II
ips-Hsad ecrews that
Mcur*
the
DX7*
•front
control panel
as shown
in FIGURE
2.
It
should
also be noted that the screw designated with
the letter
"B*
(located next
to the power switch)
is
shorter than
the other screws.
Please make sure that this screw
Is
used
at the
same location when securing the front
panel,
after installation
of
the SPECIAL EDITION ROM
is
complete!
vzsimiux*- ..ouemix.
A
(4)
PHILLIPS HEAD/TAPPING TYPE
(SIZE 4X16mm>
B
< 1
)
PHILLIPS HEAD/TAPPING TYPE
(SIZE 4XBmm>
FIGURE
2
<3
)
Carefully lift-up the
edge
of
the DX7*s front
control
panel
v
closest to the keyboard and open it
all
the way
until
it
is
resting against
the back edge
of
the DX7
case
as
shown
in
Figure 3 on
the
next page.
(4)
Locate
IC14,
the ROM
IC.
1C14
Is
located the near the
center
of
the Main Circuit board (the DM board)
,
also
shown in FIGURE
3.
At
this point you can verify whether
or not your
unit requires further modification before
installing the SPECIAL EDITION
RDM.
Remember, NO
IC15,
then
NO
modification
is necessary.
If
IC13
Is
present
then your DX7 needs modification before proceeding and
you should refer to APPENDIX
A
on Page
29.
After
completion
of
the modification proceed with
Btep
3.
If
ND modification
is
required then
go to Step
5.
-
3
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