Vectronics VEC-1120K - Manual (Page 18)

VEC-1120K/1130K/1140K/1180K Instruction Manual
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78L05
! ! 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.
! ! 1. Find the two 470-uF electrolytic capacitors. Install and solder at the
following locations (observe polarity):
! ! 2. C16 470 uF
! ! 3. C17 470 uF
! ! 4. Find the two 10-uF electrolytic capacitors. Install and solder at the
following locations (observe polarity):
! ! 5. C11 10 uF
! ! 6. C15 10 uF
! ! 7. Find the three 1-uF electrolytic capacitors. Install and solder at the
following locations (observe polarity):
! ! 8. C12 1 uF
! ! 9. C13 1 uF
! ! 10. C14 1 uF
Miscellaneous:
! ! 1. Install the 9-volt battery snap clip. Insert the red lead at +9V and the
black lead at GND. Solder and trim.