Radek,
The attenuator works by sending data line DO3 back to the PIO bus on the
CPU. Check the switch, diodes and then all the connections back to the
KLM-367 involving DO3, P10-13. Study the schematic first though as this is
coming from memory, and mine ain¹t what it used to be!
Cheers,
Andy
On 02/06/2010 23:17, "radek" <radek.tymecki@op.pl> wrote:
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> Well. My friend's Polysix dounds a bit distorted. All functions works except
> attenuator. when You move it from -10 to + 10 it has absolutely no effect.
> what can be wrong? anything else works 100%
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