Ramsey Electronics SR2 - Manual (Page 17)

SR2 – 17
ˆ 33. Install R2, 22K ohms [red-red-orange].
ˆ 34. Install R1, 100K ohms [brown-black-yellow].
ˆ 35. Install C24, 1µF electrolytic capacitor. Remember to watch polarity
when installing.
ˆ 36. Install C5, 100 pF disc capacitor [marked 100, 101, or 100K].
ˆ 37. Install C4, .01µF disc capacitor [marked .01, 103, or 10nF].
ˆ 38. Install R26, 100 ohms [brown-black-brown].
ˆ 39. Install C23, 10 µF electrolytic. Remember to check the polarity
before installing.
ˆ 40. Install Q2, the last 3904 transistor. Check the parts placement
diagram for correct orientation, then install and solder the three leads.
ˆ 41. Install C6, .01µF disc capacitor [marked .01, 103, or 10nF].
ˆ 42. Install R4, 22K ohm [red-red-orange].
ˆ 43. Install T1, one of the shielded can inductors [marked 42IF-103].
ˆ 44. Install R5, 100K ohm [brown-black-yellow].
ˆ 45. Install R6, 10K ohm [brown-black-orange].
ˆ 46. Install C28, .01µF disc capacitor [marked .01, 103, or 10nF].
ˆ 47. Install C7, .1µF ceramic disc capacitor [marked .1 or 104].
ˆ 48. Install R7, 1K ohm [brown-black-red].
ˆ 49. Install C31, .0039 uF disc capacitor [marked 392 or 392K].
ˆ 50. Install R8, 10K ohm [brown-black-orange].
ˆ 51. Install C8, .01µF disc capacitor [marked .01, 103, or 10nF].
ˆ 52. Install D1, 1N270 glass bead style diode. The banded end (cathode)
MUST be oriented as shown on parts layout.
ˆ 53. Install R11, 10K ohm [brown-black-orange].
ˆ 54. Install R10, 1K ohm [brown-black-red].
ˆ 55. Install R9, 1K ohm [brown-black-red].
ˆ 56. Install T2, the other shielded can inductors [marked 42IF-103].
ˆ 57. Install L3, 12 µH inductor [looks like a fat resistor with brown-red-
black bands].