Hi there Danjel!
I had the same problem as you with the tuning of OSC 3. But
while trying to tune it i burnt the whole PSU.
I wonder, when i have repaired it:
Where you able to tune it without detaching the Osc
board?
"The chart on page 1 shows the order of trimpots to tune
for the VCO1 is:
VR102
VR103
VR101
VR104
VR102
VR103
VR101
VR104
but then on the next page it shows the order as
this:
VR102
VR103
VR104
VR101
VR102
VR103
VR104
VR101
Which one do I follow??"
Wich of these was the correct one?
Best Regards
Alexander Henriksson
Stockholm
(Seems as Osc3 is the weak part of the
MP4.)
From: korg_mono-poly@yahoogroups.com
[mailto:korg_mono-poly@yahoogroups.com] On Behalf Of
intellijel
Sent: den 7 september 2008 21:12
To: korg_mono-poly@yahoogroups.com
Subject: [korg_mono-poly] Re: Problems tuning the monopoly
Sent: den 7 september 2008 21:12
To: korg_mono-poly@yahoogroups.com
Subject: [korg_mono-poly] Re: Problems tuning the monopoly
So I finally figured out the stretch tuning system. I have to say that
the
manual was terrible in explaining what needed to be done and it
was only from
looking carefully at the schematic that I could figure
it out.
VR2
controls the voltage for OSC1, VR1 controls the voltage for OSC2 etc.
The
signal you are measuring is at the connector (reading from left to
right)
pins 2, 4, 6, and 8 and it is relative to ground.
There is also a mistake
in the calibration manual for the next part.
The chart on page 1 shows
the order of trimpots to tune for the VCO1
is:
VR102
VR103
VR101
VR104
but then on the next page it
shows the order as this:
VR102
VR103
VR104
VR101
Which one do
I follow??