Frequency Central ROUTEMASTER Technical manual

V1 – 18 Oct 2019
Build guide - It’s best to populate the PCB in height order, smallest first.
1. Install and solder all resistors.
2. Install and solder all 1n4004 diodes. Ensure correct Polarity
3. Install and solder 100nF capacitors.
4. Install and solder all three LEDs. Follow the diagram on the PCB to ensure correct
polarity.
5. Install and solder 78L05. This part is not indicated on the PCB, it’s right next to the
+15/12V LED. Ensure correct polarity.
6. Install and solder 10uF and 100uF capacitors. Ensure correct polarity.
7. Install and solder 2K multi-turn trimmers.
8. Install all power headers.
9. Bolt LM317 and LM337 to their heatsinks, install and solder. I find it best to solder
the middle pin first, which ensures against solder bridges.
10. Install and solder all 4700uF capacitors. Ensure correct polarity.

V1 – 18 Oct 2019
Hooking it up to 12Vac
Attach one wire to each of the outer tabs on the circular barrel connecter – leave the middle
pin empty.
Connect the other end of the red wire to the
‘AC1’ hole on the PCB. Connect the black wire to
Gnd