background image

DX7 S 

Page 3 of 7 

Install 

www.musictechnologiesgroup.com 

(Re)Move the Keybed & Remove the Keyboard Rail 

 
It can be difficult to see  the delicate pins  when  installing  the  S  board.  By  moving  the 
keybed  (the  chassis  with  the  keys)  and  removing  the  silver  keyboard  rail,  you  will  have  better 
sight lines and freedom of movement when installing the S board.  
 

Remove  the  4  large  external  screws  from  the  underside  of  the  keyboard

  along  the  front 

edge.  The  photo  below  shows  the  inside  front  edge  of  the  empty  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 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. 

Remove those 

three screws and set aside the silver keyboard rail

.  (Shown below with keybed 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...

Отзывы: