Vectronics VEC-422K - Manual (Page 14)

VEC-422K Owner's Manual SCA Decoder Kit
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! ! 10."C5 .01-uF monolithic capacitor (103 or .01)
Locate the three .1-uF monolithic capacitors (104 or .1). Install and solder at the
following locations:
! ! 11."C7 .1-uF monolithic capacitor (104 or .1)
! ! 12."C8 .1-uF monolithic capacitor (104 or .1)
! ! 13."C13 .1-uF monolithic capacitor (104 or .1)
Molded choke and inductor installation:
Note: only the first three color bands for the molded choke color codes are
specified in the following directions. The fourth band is for tolerance and may
be disregarded.
Locate the two 330-uH molded chokes (orange-orange-brown). Install and
solder at the following locations:
! ! 1."L1 330-uH molded choke (orange-orange-brown)
! ! 2."L2 330-uH molded choke (orange-orange-brown)
Polarized capacitor installation:
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 the longer
of the two.
Locate the three 1-uF electrolytic capacitors. Install and solder at the following
locations:
! ! 1."C16 1-uF electrolytic capacitor. Observe polarity!
! ! 2."C17 1-uF electrolytic capacitor. Observe polarity!
! ! 3."C18 1-uF electrolytic capacitor. Observe polarity!
Locate the two 470-uF electrolytic capacitors. Install and solder at the following
locations:
! ! 4."C14 470-uF electrolytic. Observe polarity!
! ! 5."C15 470-uF electrolytic. Observe polarity!