Thank you this is extremely usefull stuff.
Can't wait for the .pdf file now. :)
> -----Original Message-----
> From: bkuris [mailto:benjamin.kuris@...]
> Sent: Wednesday, August 04, 2004 6:05 AM
> To: chromapolaris@yahoogroups.com
> Subject: [chromapolaris] Diagnostics
>
>
> This is going to be fairly long-- I'll try to make a .pdf of the
> actual manual soon. For now I'll abbreviate:
>
> Diagnostic readouts:
> Lower Function - D - 1: displays charge on battery in right column
> of LEDs in assignable control section. Expect 4-5. Replace cells if
> less then 2 LEDs light. If 7 LEDs light, the battery cap. is
> overcharged which is usually an open between cell terminal and cap.
>
> L F - D - 2: flashes number led of revision of SW
>
> L F - D - 3: Turns on all LEDs to check LEDs and digital power
> supply for max current.
>
> L F - D - 4: (for bryon!) turns on LED above master slider when
> master slider is positions to produce a value of 255. This checks
> out the range of the A/D convertor
>
> L F - D - 12: erases all memory. don't do this!
>
> L F - D - 10: MIDI reset
>
> L F - D - 11: warm reset. For minor glitches like stuck notes
>
> L F - D - 12: cold reset. like toggling the power switch
>
> ∗adjustments and checkout∗
> Digital level: turn on all LEDs. measure at P3 pin 3 and pin2 adjust
> R9 for +5V (10mv tolerance)
>
> Reference level: p4 pin 1 and p6. adjus r5 for +5V within 10mV.
>
> DC ok threshold: back off R17 to minimum (full CCW) then turn
> clockwise till LED CR10 lights. Later models have a different design
> w/no adjustments
>
> ADC range (for slider!): push master slider up to max and pull all
> other sliders to minimum. Press lower function D-4 and watchi the
> LED in the master secetio nof the panel (volume/tune). Turn R45
> clockwise to maximum, then back off couterclockwise until LED
> lights. Continue turning CCW 5 degress beyond this point. Press
> lowre Function to return panel to normal operation.
>
> DAC null: using 3.5 or 4 digit DMM to measure between TP1 and TP2
> adjust R46 until the meter reads within 100uV of 0 (-.0001 to
> +.0001V). This is a critical adjustment and quite sensitive.
>
> lever position: measure the DC voltage between the center terminal
> and ground of each pot in the lever assembly. At rest should be 2-
> 3V. IF either is out of range use 1/2 inch wrench to loosen the nut
> on the pot, rotate the pot until the voltage reads 2.5V and retighten.
>
> skipping so stuff...
>
> Lever range:
> LF - A - 7 and move levers (pb/mod) through the entire mechanical
> range. The computer will adjust to the measured range.
>
> Pedal range:
> LF - A - 8 as above but move pedal
>
> volume offset: to long to type
>
> key sensitivity: LF - A -10. Use a touch sensitive patch. If a key
> feels over or under senstive, press a key and use master slider to
> adjust sensitivity.
>
> final stuff for Bryon to debug ADC:
> check out ADC voltage (R45 adjustment above).
> Output of sliders are selected for ADC by MUX Z5 (on control panel).
> 1/2 of Z54 buffers the mux output which is fed into Z53 (ADC0804 ADC)
> the othe r1/2 of Z54 buffers the ADC reference voltage (R45).
> Make sure all these chips are well seated.
>
> You can also use MIDI controls if all else fails or to verify that it
> isn't a voice problem... but that will have to wait (I guess you
> could check the range of the midi out signals using a PC and a midi
> monitor program).
>
> Good luck,
> Ben
>
>
>
>
>
>
> ------------------------ Yahoo! Groups Sponsor
> --------------------~-->
> Over 1 billion served! The most music videos on the web.
> Click to Watch now!
> http://us.click.yahoo.com/Xkrq7C/IARHAA/n1hLAA/QnLolB/TM
> --------------------------------------------------------------
> ------~->
>
>
> Yahoo! Groups Links
>
>
>
>
>