Vectronics VEC-422K - Manual (Page 16)

VEC-422K Owner's Manual SCA Decoder Kit
14
1
Installation
Key
XR2211
The IC body has a small notch, or key, molded at one end, indicating pins 1 and
14. A small dimple-like body-molding is often found adjacent to pin 1. Some
IC packages may include both key indicators.
Locate the XR2211 14-pin IC.
! ! 6."Align the body of the XR2211 to correspond with the key of socket
U1. Loosely insert the pins of the XR2211 into socket U1. All 14
pins should fit freely into the socket openings. If not, straighten the IC
pins until they do. Using firm and steady pressure, fully seat the IC
into the socket.
! ! 7."Locate the 8-pin IC socket. Install and solder at location U2. Observe
key alignment!
! ! 8."Locate the LM386 audio IC. Align the body of the LM386 to
correspond with the key of socket U2. Loosely insert the pins of the
LM386 into socket U1. All 8 pins should fit freely into the socket
openings. If not, straighten the IC pins until they do. Using firm and
steady pressure, fully seat the IC into the socket.
Final steps:
! ! 1."Locate the push-action DPDT power switch. Install at SW1. The
push shaft should extend over the edge of the board. Be sure the
switch is fully seated and level before soldering. Solder.
Locate the two RCA jacks. Install and solder at the following locations (note:
ensure the leads are fully inserted). Bend the pins over so they contact the
copper foil surface. This will improve the mechanical strength of the solder joint.
! ! 2."J1 RCA jack.
! ! 3."J2 RCA jack.
! ! 4."Locate the 3.5mm jack. Install at J3. Be sure the switch is fully seated
and level before soldering. Solder.