FM25B • 16
36. Install C23, .1 µF disc capacitor (marked .1 or 104 or 100 nF).
37. You’ll notice a silkscreen position for C19. This part is not used; don’t
install any component at that position.
38. Install C20, 10 µF electrolytic capacitor. This part was changed from
a disc capacitor to improve the low frequency response so you’ll have to fit
the electrolytic in where the disc would have gone. The positive lead
should be placed toward C13 and the negative or striped lead should be
placed toward R25. As with all the other components in this kit, keep the
lead lengths as short as possible.
39. Install C18, .001 µF disc capacitor (marked .001, 102 or 1nF).
40. Install R24, 47k ohms (yellow-violet-orange). Be careful! This part is
easily confused with the 4.7k resistors since the last color band is orange
and the 4.7k is red.
41. Install C21, another .1 µF disc capacitor (marked .1 or 104 or 100 nF).
42. Install R23, 220k ohms (red-red-yellow).
43. Install C15, 10 pF disc capacitor (marked 10 or 10K).
44. Install C13, .001 µF disc capacitor (marked .001, 102 or 1nF).
45. Install D8, MV2105 varactor diode (transistor shape with two leads,
marked MV2105). Follow the PC board silkscreen for proper placement.
46. Install R22, 10k ohms (brown-black-orange).
47. Install R21, 470k ohms (yellow-violet-yellow).
48. Install C11, 10 pF disc capacitor (marked 10 or 10K).
49. Install R20, 100k ohms (brown-black-yellow).
50. Install D7, the other MV2105 varactor diode (transistor shape with two
leads, marked MV2105). Again, be sure you place this part correctly.
51. Install C14, .001 µF disc capacitor (marked .001, 102 or 1nF).
52. Install R19, 10k ohms (brown-black-orange).
53. Install R16, 4.7k ohms (yellow-violet-red).
54. Install C8, 47 µF electrolytic capacitor. Remember to orient this part
as shown on the silkscreen and parts layout diagram. Bad things can happen when electrolytics are installed backwards!
55. Install R18, 22k ohms (red-red-orange).
56. Install R17, 100 ohms (brown-black-brown).
57. Install R14, 10k ohms (brown-black-orange).