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<DIV><FONT face=Arial size=2>Hi all,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I've just finished replacing the battery in my
OB-XA (along with installing new bushings and cleaning some problematic J-wires)
and I've found that all voices now fail the autotune procedure. When I
press the button, it cycles through all 8 voices, then the 8 LEDs
flash for about 2 seconds. All 8 voice cards are perfectly
functional.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have both versions of the service manual, and
neither address the autotune function other than using it in calibration
routines. How autotuning is implemented and any specific
troubleshooting/calibration strategies are completely neglected.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>So I'm wondering what could possibly be
contributing to this problem. Autotune worked before the battery
replacement, although tuning wasn't perfect. Does something within the
circuit rely on battery power to retain memory for the
autotune algorithm? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>At first I thought bad tuning might be causing the
problem. Turning the voice disable feature off with the test2 switch, I've
started calibrating the individual voice boards to achieve better tuning, yet
reagardless of the more accurate initial tuning the autotune function still does
not want to cooperate.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Looking back at the AH archives, it seems a few
people have experienced this exact problem, though no answer ever
surfaced. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>...Anyone</FONT><FONT face=Arial
size=2>?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks.</FONT></DIV></BODY></HTML>