Sir apauly . . . . .
You say . . . . .
I accidentally pulled some multipins in the midi section and placed them back where I *thought* they went. I consulted the service manual and I think everything looks right (there are some open pins).
the resultant adverse affects were . . . .
Well, the console turns on, but every channel mute light is on and when I press both the channel on and clip/listen buttons, the clip/listen led comes on. I should also note that the meters don't seem to respond to any input, and nothing seems to be functional.
SPECIFICALLY . . .
Looks like the pins on
MIDI BOARD CONN 9 would be most likely, the one to be associated with your mentioned maladies.
ANALYZING . . . the units CONN 9
Pin 1 . . . . . is + 15V DC power and Pin 2 is power ground, hopefully they were not ones being involved or else . . . . . ( (
KA-BOOOOOOOM ! ))
Pins 5 and 7 . . . . . are connected to feeble bias supplies associated with Interrup tand Reset functions into the M 50747 BITSUMISHI u/P that multiplexes all of the audio track channels , microseconds faster than your ear is even capable of perceiving. (50 millisecs detection threshold )
Pin 3 . . . . . is receiving digital output information from the u/P Port 6 that is fed to another area, you would have to trace that wire down to where it ends up and give feedback.
Pin 6 . . . . . is sending digital info to u/P Port 5 that comes in from another area, so you also need to track down that wire to the other section that it emanates from. This mosty likely would cause an overall mute fault. Ergo . . . VU meters no workee
SUMMATION . . . . .
Valid connections are made only into CONN 9 pins
1 . . . . . 15VDC power
2 . . . . . . Ground
3 . . . . . . Outputted digital signal from u/P Port 6.
5 . . . . . . Required +5 Interrupt bias for u/P
6 . . . . . . Required +5 Reset bias for u/P
7 . . . . . . Inputted digital signal going to u/P Port 5.
Now, tell us
EXACTLY which pins you were involved with . . . . . . and what
CONNectors were they on . . . . ? ? ?
MONITOR CIRCUIT
CONN 1 and its pins 3,4,5,6,7,8,9,10,11,12,13 and 14
CONN 2 and its pins 1,2,3,7,10,11 and 17
CONN 3 and its pins 3,5,6 and 7.
MIDI MUTE CIRCUIT . . . . . .( is being your
mentioned problem board . . . . . (
¿ and which
CONNector pin(s) was / were being involved
? )
CONN 1 and its pins 1,2,3,4,5,6,7 and 8
CONN 2 and its pins 1,2,3,4,5,6,7,and 8
CONN 3 and its pins 1,2,3,4,5,6,7,and 8
CONN 4 and its pins 1,2,3,4,5,6,7,and 8
CONN 5 and its pins 1,2,3,4,5,6,7,and 8
CONN 8 and its pins 1,2,3,4,5,6,7 and 8
CONN 9 and its pins 1,2,3,5,6 and 7 . . . . . with its pins 4 and 9 having
No Connections made into them . . . . . plus, also check that the 6 pins that are being connected into , are not now being miswired.
MIC CIRCUIT PART B
CONN 1 and its pins 1,2,3,4,5,6,7,8 ,9,10,11,12,13 and 14
CONN 3 and its pins 2,5,7,8,9,10,11 and 12
MIC CIRCUIT PART A
( If Fitted )
CONN 2 and its pins 1,2 and 3
CONN 4 and its pins 1,2 and 3
CONN 5 and its pins 1,2,3,4 and 5
LEFT-RIGHT OUTPUT CCT
CONN 1 and its pins 2,3,4 and 5
CONN 3 and its pins 2,4,7,10,11,12,14 and 16
Thaaaaaaaasssssssit . . . . .
73's de Edd . . . . .
My grandfather survived both mustard gas and pepper spray in the war.
You might say . . . . . . . He is a seasoned veteran now.
.