FM30
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sure the part is flush to the PC board before soldering and placing the
notched end as shown on the Parts Layout Diagram and PC board silk-
screen.
8. You can now place the microcontroller in the socket you just installed.
Be sure the notched end is placed correctly and press the chip into the
socket, then check for bent under or bent out pins.
Now we’ll start installing the rest of the components starting at the corner of
the board near J3. Place the board so that you can read the writing on it right-
side up.
9. Install C8, 10nF or 0.01uF ceramic disc capacitor (marked 103). Disc
caps have no polarity and can be installed in either direction. We’ll always
let you know when you have to be particular about how to install a compo-
nent.
10. Install C5, 1nF or 0.001uF ceramic disc capacitor (marked 102).
11. Install D1, a 1N4000 series diode (1N4002—1N4007). Note the stripe
or band on one end of the part and the stripe marked on the PC board
silkscreen and Parts Layout Diagram. This diode must be placed correctly
to function properly. Line the part up with the mark on the board and sol-
der it in place.
12. Install L1, 2.2uH inductor (green body, red-red-gold-silver).
13. Install C7, 10nF or 0.01uF ceramic disc capacitor (marked 103).
14. Install C50, 100pF ceramic disc capacitor (marked 101).
15. Install L3, 2.2uH inductor (green body, red-red-gold-silver).
16. Install R45, 16k ohm resistor (brown-blue-orange).
17. Install C51, 10uF electrolytic capacitor. Electrolytic caps have a polar-
ity and must be installed correctly in order to work . . . and in some cases
in order not to blow up when power is applied! You’ll note that the legs of
the part are different lengths and there is a stripe or band down one side
of the capacitor that corresponds to the shorter of the two leads. This is
the negative side of the cap. The silkscreen and Parts Layout Diagram will
show where the positive lead is to be placed by a “+” sign on the board.
Orient the part with the longer lead in the “+” hole and solder the part in.
18. Install R44, 100 ohms (brown-black-brown).
19. Install R30, 56k ohms (green-blue-orange).
20. Install C13, 100uF electrolytic capacitor. Remember to orient the
longer positive lead with the ’+’ sign on the board before soldering.
Содержание FM30
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