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Subject: Re: [ chromapolaris] new EPROM REV procedure

From: james meagher <w.james.meagher@...>
Date: 2013-03-16

Okay, I think I've answered my own question about the jumper . . . I was looking at the wrong cable. I'm assuming because I replaced four REV5 EPROMS with four REV9 EPROMS (and not with two of the 128's), that I can actually skip this step #4 because the jumper is already in the proper position, yes? 

James


On Sat, Mar 16, 2013 at 3:46 PM, james meagher <w.james.meagher@...> wrote:
Sorry, accidentally hit SEND prematurely there . . . 

Okay, I've installed my four Rev9 EPROMS into my Polaris. Below are the procedures to follow, but I've got some questions about them right off the hop:

Procedure
  1. Save the programs and sequences on cassette.
  2. Disconnect line power and open the Polaris.
  3. Remove four 2764 EPROM's from sockets Z10, Z11, Z12 and Z13. Carefully install two 27128 Revision 9 EPROM's in Z12 and Z13 making sure that the notched end of the EPROM goes to the pin 1 end of the socket and that no pins get bent. Sockets Z10 & Z11 remain blank. - I assume that if I have the version with all four Rev9 EPROMS instead of two that I just put all four in right now at this step? 
  4. Move the jumper connector located near the left rear corner of the main board (next to C819 and Z19) so that the center pin shorts to the rear-most pin. - Am I supposed to turn reconnect the power and turn on before or after this step?  Also, which center pin? the brown to the green? The red to the green? Either one of those to the yellow? I'm not sure which would be the rearmost as these pins run parallel to the back of the board? 
  5. Press LOWER FUNCTION – D - 12 STOP.
  6. Press LOWER FUNCTION – TUNE ALL. Move the master slider to maximum, then back off to about 1/4.
  7. Select A-1 in the Bank Select/Program Select section; now you should have a "scratch sound."
  8. The LED above the master slider must be off. If on, turn it off to establish the volume mode. The assignable volume must be on and set to about 1/4.
  9. Put a scratch program in the main workspace. (Select A-1)
  10. Press LOWER FUNCTION - A.
  11. Press 1 and move the master slider down to its minimum position. If already at minimum, move it up and back.
  12. Press 2 and move the master slider up to maximum.
  13. Press 3 and move the master slider down to minimum.
  14. Press 4 and move te master slider up then down to minimum.
  15. Press 5 and move the master slider to its maximum position.
  16. Press 7 and move both levers (not sliders) through their entire mechanical ranges. Set the master slider to 1/4.
  17. Press 8 and move the pedal through its range.
  18. Press 9. Select VOLUME on the Assignable Control and set the slider to 1/4. Play 6 different notes, 1 at a time. After releasing each note, move the MASTER slider up until you hear the note bleeding through, then back off until it just disappears. If this adjustment is not set properly, notes will decay abruptly or the velocity will be too sensitive. Playing 6 notes adjusts each of the 6 channels.
  19. Press B. Turn on LED's 1, 2, 3, 7, 8, 9, 10, 11 and 12. Turn off LED's 4, 5 and 6.
  20. Press C. Turn on LED's 1 and 2. Turn off all others.
  21. Press K. Turn on 1 and 7. Turn off others.
  22. Press LOWER FUNCTION to return Polaris to normal operation.
  23. LOAD programs and sequences from cassette. 
Cheers,
James



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