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DX7 S 

Page 4 of 7 

Install 

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You  now  have  excellent  access  to  the  DX7  main  board.  If  you  do  remove  the  keybed  you  may 
find it easier to remove the small yellow cable and large flat grayish cable at the main-board-end 
rather than from the keybed. You will also need to unclip two small cables on the left end. There 
may also be wire tires and/or cable fasteners to deal with. 
 

 

 
 
 

Remove the EPROM and SRAM ICs 

 

The next step is to 

remove the EPROM and two SRAM ICs

.  Follow the instructions on the next 

page. 

Memory chips in place   

 

 

Memory chips removed 

 

Содержание SuperMAX+

Страница 1: ...rform 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 All Lithium battery repairs must be done by a qualified technician due to the explosive nature of the CR2032 battery Precautions High Voltage Safety Warning Turn the DX7 power switch OFF and disconnect the AC power cable before ...

Страница 2: ...all o Standard Philips screwdriver Condition of DX7 While the SuperMAX 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 ...

Страница 3: ...mpty case bottom The photo illustrates the location of the 4 screws You will of course be unscrewing from the underside Loosen the 3 internal screws at the extreme right and left ends that hold the keybed in place It is not necessary to extract them from the holes they reside in Carefully lift the keybed slightly up and out toward yourself an inch or so You don t need to move it much You will prob...

Страница 4: ... yellow cable and large flat grayish cable at the main board end rather than from the keybed You will also need to unclip two small cables on the left end There may also be wire tires and or cable fasteners to deal with Remove the EPROM and SRAM ICs The next step is to remove the EPROM and two SRAM ICs Follow the instructions on the next page Memory chips in place Memory chips removed ...

Страница 5: ...nd tighten the supplied nylon standoff into the screw position near IC23 Tighten it well by hand but there is generally no need to use a tool Do not over tighten or strip the threads Next CAREFULLY remove the SuperMAX board from its anti static packaging Inspect the bottom of the board to make sure none of the pins have been damaged or have any debris on them Identify your SuperMAX board version R...

Страница 6: ...l main board screw through the SuperMAX board into the nylon standoff Do NOT force it or over tighten as this can not only strip the standoff but it can cause the SuperMAX board to torque and change position It should be tight enough so that it cannot work lose Double check the pins Reassembly Carefully reassemble the DX7 in the reverse order taking care to replace the correct screws in the variou...

Страница 7: ...al player can achieve a MIDI Out note on velocity of 127 using reasonable force Consult the online Yamaha DX7 SuperMAX User Guide for more information on using your upgraded DX7 Problems Almost all installation problems are due to poor board seating or connections Remove the board check all the pins for debris contamination bending etc Then reinstall Battery Holder Option The information here is d...

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