As soon as the /interrupt line between the MechanicsController and the DigitalSignalProcessor in the psTwo goes low, the capacitor in the SubZero fix circuit starts to discharge. If the /interrupt line does not go high within 50miliseconds - the capacitor discharges and mutes the RS2004FS completely. By doing that it prevents ANY dangerously high currents resulting from the lockup to flow thru the lens coils. The lens coils are now 100% immune to the dangerous MechanicsController lockups.
It is the only fix of this kind that does NOT use any programmable ICs like the PIC12C508. It consists of exclusively passive components, 3 in total to be exact. By that we reduce the minimum install solder point count to 3, which speeds up the install and most of all - keeps all possible sources of error and malfunction to a minimum. The 3 reliable passive components are also the cheapest implementation of the fix, making it very competitive in price.
*The pcb also has the "summ0ne fix" for v12.1 and v12.2 onboard. The user must apply both the "SubZero Fix" part and the "summ0ne tracking" part in conjunction for FULL protection. Applying the "summ0ne focus" part is not recommended for best performance and media compatibility.
*The fix will work great with ANY modchip.
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