Arp1601 Step1fix Mod

This Modification helps to syncronize the first step1 to an external source.
when you try to sync from an external source the step2 is in sync with step1 from external.
This Mod fix this issue, for original 1601 and clones

Available here:

https://www.diysynth.de/pcbs-panels/arp1601-step1-fix-mod-pcb.html

assembled Version:

https://www.diysynth.de/pcbs-panels/arp1601-step1-fix-mod-pcb-97.html

BOM:

amount	value

amount	value
2	CD4011	DIP
1	100k resistor	standard 1/4W
3	100nF	X7R THT capacitor
1	MTA 3pole header	MTA100 size	TE-connectivity	or just jumper it with a resistor leg
1	10-12mm spacer	Male-male or Female-male M3
1	16pins needed - double pin row for IC sockets	https://www.tme.eu/de/details/mct-1-36-1-g/prazisionssockel/adam-tech/	ADAM TECH	MCT-2-36-1-G)
2	14pin ic socket	THT
1	16pin IC socket
1	PC jumper

guide:

start with the bottom and the double contacts:

you can hold the double contact pin stripe by using an IC socket

Solder flat as shown:

Then install the remaining parts..

Thats how it fits in the 1601 clone : (don't forget to install the jumper !! !!!!)