5. In the same way install C20, a 10uF electrolytic capacitor, again checking your polarity before soldering.
6. Install C19 and C18, noting that these are also 10uF electrolytics and the polarity is exactly opposite to the two parts you just installed. Simply follow the silkscreen and layout diagram for proper placement.
7. Install R14, 10k ohms
8. Install R6, 470 ohms
9. Install C8, 0.1uF capacitor (marked 104). Like resistors, disc caps can be installed in either direction.
10. Install R17, 470 ohms
11. Install D3, 1N4148 diode (orange glass body with black band). The band indicates the cathode or negative side of the part. Follow the PC board silkscreen and Part Layout Diagram for correct placement of the band before soldering the part in place.
12. Install R21, 15k ohms
13. Install R20, 470 ohms
14. Install C17, 10uF electrolytic capacitor. Remember to watch the polarity when installing!
15. Install R13, 10k ohms
16. Install D7, another 1N4148 diode (orange glass body with black band). Remember to line the black band up with the silkscreen for correct orientation.
17. Install C24, 0.1uF disc capacitor (marked 104).
18. Install R25, 1 Meg ohms
19. Install C2, 10uF electrolytic capacitor. Follow the silkscreen for polarity.
20. Install VR1, the 78L05 5 volt regulator. Place the flat side as shown on the silkscreen. This part regulates the incoming voltage down to 5 volts for the parts that require it, and, along with its associated capacitors, smoothes out the voltage and “cleans” it up.
21. Install C9, 0.1uF disc capacitor (marked 104).
22. Install R28, 470 ohms
23. Install R29, 220k ohms
24. Install R26, 75k ohms
