|
|
ECN-0150 |
| Title |
Borris 2 Keyboard Interrupt modification |
| Equipment |
Azure, Pearl 2000/2004 , Sapphire 2000 |
| Author |
Adam Proffitt |
| Drawing
No |
n/a |
| Date |
18th October 2002
|
| Reason
for ECN |
No response to front panel key-presses. (This problem seems to affect a few desks only and is most likely to occur after a ‘wipe all’,disk operation or power up – ie when desk resets). The problem is caused by noise being picked up by the qwerty keyboard interrupt line and could be temporarily be fixed by plugging a qwerty keyboard. |
| Special
Parts Required |
2K2 0.5W resistor
|
| Special
Tools Required |
None |
|
Work
Required |
|
-
Scrape away small amount of solder
resist (green) on the +5V track just above the ‘H’ of ‘SOUND TO LIGHT’ (see
photo above).
-
Solder a 2K2 resistor between above scrape and via (put resistor leg through this small hole) just above the ‘S’ of ‘SOUND TO LIGHT.
|
|
