Vectronics VEC-1120K, Инструкция по эксплуатации

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VEC-1120K/1130K/1140K/1180K Instruction Manual
16
78L05
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9. Install the 78L05 so its body is keyed to the silk-screen outline for IC
U2. Re-form U2’s leads as needed so it sits close to the board.
Solder.
Installation of Electrolytic Capacitors:
Electrolytic capacitors are polarized devices, and must be inserted with respect
to polarity. The style used in the VEC direct conversion receivers have radial
leads; both leads exit from one end of the device body. Each capacitor’s plus (+)
mounting holes are noted both on the circuit board and parts placement diagram.
If the markings on the capacitor body are unclear, the plus (+) lead is always the
longer of the two.
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1. Find the two 470-uF electrolytic capacitors. Install and solder at the
following locations ( observe polarity) :
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2. C16 470 uF
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3. C17 470 uF
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4. Find the two 10-uF electrolytic capacitors. Install and solder at the
following locations (observe polarity) :
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5. C11 10 uF
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6. C15 10 uF
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7. Find the three 1-uF electrolytic capacitors. Install and solder at the
following locations (observe polarity):
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8. C12 1 uF
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9. C13 1 uF
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10. C14 1 uF
Miscellaneous:
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1. Install the 9-volt battery snap clip. Insert the red lead at +9V and the
black lead at GND. Solder and trim.