Yamaha Vintage DX7 Special Edition ROM Operation Manual Download

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voices into the DX7 internal memory and then format if
you like.) You cannot format a ROM (factory preset) car-

tridge.

BATTERY CHECK

In function mode, this button causes the display to

show the voltage level of the battery which preserves

the DX7 internal voice and programming memories
when power is turned off. The acceptable range is 2.3 to
3.5 volts. If the battery is below 2.2 volts, contact your

Yamaha dealer to arrange for replacement; this is NOT a
do-it-yourself repair.

CARTRIDGE

This pair of buttons sets the DX7 to transfer a full 32

voices between the internal and the cartridge memory

Before voices can be transferred TO a cartridge or TO

the DX7, the corresponding (MEMORY PROTECT)

features must be turned off. (Individual voices can be

transferred by first using the Play mode to "pick" the
voice, then pressing the [STORE] button and whatever

Voice Selector you like from 1 to 32.)

SAVE
Pressing this button in FUNCTION mode stores all 32
internal memories to a RAM cartridge. You have an

opportunity to cancel the command by answering
[NO] to either displayed prompt; otherwise any

voices in the cartridge will be erased when the tran-
ter occurs. The display shows "Under Writing" for 20

seconds while the voices are being "written" to the

cartridge.

LOAD

Pressing this button in FUNCTION mode loads 32

RAM or ROM cartridge voices into the DX7 internal
memories. Again, you have to answer [YES] twice
before the voices are loaded (which erases any exist-

ing voices in the internal memories). The actual

transfer occurs instantaneously

MODULATION

The bottom row of 16 Function buttons is used to set

the Modulation available from 4 control sources: the

MODULATION WHEEL, FOOT CONTROL, BREATH
CONTROL and key AFTER TOUCH. Since the 4 groups
are identical in nature, we'll cover the buttons just once.

Pressing any of these buttons activates the [DATA EN-

TRY] section so you can program different settings.

NOTE: if the Amplitude or EG Bias is turned On, with a

low Range setting, certain voices may be inaudible or

nearly so due to their high modulation sensitivity.

RANGE

This lets you program the amount of modulation

from none (0) to a maximum value (99). Bear in
mind, however, that the Pitch and Amplitude modu-
lation "range" may be zero (off) even if this control is

set at 99 unless the particular voice being played

includes some modulation sensitivity. Since sensitivity
differs between voices, the identical Range setting
may produce different results with different voices.

PITCH
This lets you turn On LFO modulation of the voice's
pitch for vibrato-like effects.

AMPLITUDE
This lets you turn On LFO modulation of the ampli-

tude (level) of those individual operators within a
voice that are programmed to be sensitive to it. The

effect may therefore be tremolo-like, or wah-like

depending on whether a carrier or modulator is
being modulated.

EG BIAS
This lets you directly control the operator output

level with the corresponding modulation control

(Foot, Breath, etc.). In this case, the LFO is not in-

volved. Again, this will produce changes in brilliance

or volume or "wah" depending on the amplitude

sensitivity programmed into each operator in the

voice.

Voice Cartridge socket

This socket accepts the ROM cartridges which each

hold 64 pre-programmed voices (two are supplied with
the DX7), or the RAM cartridges which each hold 32

user-programmed voices. A protective door automati-
cally swings away when a cartridge is inserted. The
cartridges have a slot in their end connector, and the
socket has a keyway so that the cartridges can only be

inserted fully when properly oriented. If a cartridge does

not seat properly turn it around and try again. DO NOT
FORCE a cartridge into place.

Power Switch

This rear panel switch turns power on, permitting

the DX7 to be played and/or programmed. The inter-

nal voices are preserved even when power is turned

off, so long as the internal battery can deliver at least
2.3 volts (which can be verified by selecting the

FUNCTION/Battery Check mode).