Ramsey Electronics BS1 Manual de instrucciones descargar pdf (Pagina 18)

SG7• 18

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40. Install R24, 220 ohm resistor [red-red-brown].

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41. Install C19, .01µF disc capacitor (marked .01 or 103 or 10nF).

 42. Install C16, 100pF disc capacitor (marked 100 or 101).

 43. Install R17, 10K ohm resistor [brown-black-orange].

 44. Install R20, 47K ohm resistor [yellow-violet-orange].

 45. Install C15, .01µF disc capacitor (marked .01 or 103 or 10nF).

 46. Install R18, 47K ohm resistor [yellow-violet-orange].

 47. Install D1, the small 1N4148 diode. Orient the banded (cathode) end

Correctly as shown in the drawings.

 48. Install C18, .01µF disc capacitor (marked .01 or 103 or 10nF).

 49. Install R12, 3.3K ohm resistor [orange-orange-red].

 50. Install R19, 100K ohm resistor [brown-black-yellow].

 51. Install C10, 10µF electrolytic, observe polarity.

 52. Install R13, 47K ohm resistor [yellow-violet-orange].

 53. Install C11, .001µF (marked .001 or 102). .

 54. Install Q1, 2N3904 transistor with the flat side oriented as shown on the

PC board drawing. Press the transistor firmly into its holes, keeping wire

leads as short as possible.

 55. Install D2, type 1N4002 or 4002, the larger, remaining diode. Be sure

that the banded (cathode) end is oriented correctly.

 56a. Review the Jumper Wire list and the Parts layout diagram, making

sure that all jumpers are installed correctly.

 56b. Verify that all IC chips or sockets (U1- U8) are installed correctly.

 57a. Install power jack, J3. This jack is surface-soldered between the

ground foil and the PC board pad area connected to Jumper 17. The side

of the jack with the middle (unused) connector faces away from the solder

side of the board, leaving the smooth side nearly flush with the component

SOLDER

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Ramsey Electronics BS1 Manual de instrucciones Pagina 18