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Yamaha DX7 DX-MAX(3)+ Expansion Install
1: Introduction
The DX7 DX-MAX(3)+ a powerful option board that provides increased memory and greater
control of the DX7.
While the installation is fairly simple, it still requires patience and general electronics
knowledge. We accept no responsibility for the work you perform on your DX7. Read over
the following installation description and if you feel you are not capable of the work
required, turn the project over to a qualified technician
Precautions!
High Voltage Safety Warning
Unplug the audio cable. Turn the DX7 power switch OFF and unplug it from the wall.
Disconnect any other connected cables before opening the DX7.
ESD Precautions and Proper Handling Procedures
You should observe standard static-safe handling behavior when working with sensitive electronic
equipment such as synthesizers:
Avoid carpets in cool, dry areas.
o
Dissipate static electricity before handling any system components by touching a
o
grounded metal object.
If possible, use anti-static devices, such as wrist straps and floor mats.
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Take care when installing the board. Prevent damage to the connectors by aligning
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connector pins before you apply pressure. A damaged pin can render the board unusable
and can cause damage to system components at power-on.
If disconnecting a cable, always pull on the cable connector, not on the cable itself.
o
Tools Required
Standard Philips screwdriver.
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Standard flat-head screwdriver (small).
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Condition of DX7
While the DX7 DX-MAX(3)+ will replace the functionality of damaged or missing EPROM and/or
SRAM chips, it will not correct other problems your vintage synthesizer may have. It is
recommended that the synth be in otherwise good condition before beginning the installation. For
instance, the battery voltage should be checked and the battery replaced/repaired by a tech if
necessary. Sockets for the EPROM and SRAM chips should be in good working order and not be
DX-MAX(3)+
Page 1 of 6
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Install v2.00
Preliminary
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Summary of Contents for Yamaha DX7 DX-MAX(3)+
- Page 1 Yamaha DX7 DX-MAX(3)+ Expansion Install 1: Introduction The DX7 DX-MAX(3)+ a powerful option board that provides increased memory and greater control of the DX7. While the installation is fairly simple, it still requires patience and general electronics knowledge. We accept no responsibility for the work you perform on your DX7. Read over...
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Page 2: Installation
dirty, oxidized, rusted or otherwise compromised. If repair is required, do it before installing the DX7 DX-MAX(3)+. 2: Installation Back up your patches if they are important to you! Open the DX7 Using a Philips head screwdriver, remove the 5 screws from the front panel. Two are located on the left front. - Page 3 Carefully lift the keybed slightly up and out (toward yourself) an inch or so.. You don't need to move it much. You will probably need to free up one or more cables to accomplish it. Or if you prefer, disconnect the cables and completely remove the keybed. This will give you access to the 3 screws holding the silver keyboard rail in place.
- Page 4 Place them safely aside on anti-static foam. You can use the reverse side of the foam shipped with the DX7 DX-MAX(3)+. The photo above shows the 3 chips removed. After removing the chips, also remove the screw shown at the center of these photos near IC23.
- Page 5 Place the DX-MAX(3)+ board gently on the DX7 main board so that the 28 pins that form a DIP package align with the vacated IC14 spot. The 8 pins along the edge should align with IC20. Do not press the board in place yet. You can use a small mirror to check the pin alignment. Once you are happy that all the pins are aligning with the desired locations, firmly and evenly press the DX7 DX-MAX(3)+ board in place.
- Page 6 The patch data memory will certainly be garbled. Use the standard DX7 panel operations to load the current data bank with your patches. The “Yamaha DX-MAX(3)+ Expansion User Guide” will explain how to select memory banks as well as how to use the other features of this expansion.