![RYO PCB1 1.0 Manual Download Page 9](http://html1.mh-extra.com/html/ryo/pcb1-1-0/pcb1-1-0_manual_1503643009.webp)
Step 4
Solder vactrol/optocoupler sockets. Not sensitive to mounting direction.
2x LDR1, 2x LDR2
2 pin SIP socket. Optocouplers will be mounted later.
Step 6
Solder ceramic capacitors. Ceramic capacitors are not sensitive to mounting direction. We use
TDK brand in the kit and pre-assembled.
C21
33nF