Vectronics VEC-1120K - Manual (Page 17)

VEC-1120K/1130K/1140K/1180K Instruction Manual
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rectangular shaped notch. The silk-screen legend on the PC board will
indicate proper orientation. Inspect each socket carefully, and
straighten any bent pins before attempting to installation.
Important Note: If you do not wish to use sockets with your kit, you may omit
them and mount the ICs directly into the board (an option experienced builders
may prefer). Sockets make IC removal easier in the event of an installation error
or component failure. If you elect to omit the sockets, mount the ICs with their
keys aligned as shown on the PC board.
! ! 2. Install and solder the IC sockets at the locations shown below:
! ! 3. U1 (notch towards C8)
! ! 4. U3 (notch towards C15)
! ! 5. Locate the NE602 (NE612 may be substituted in some kits), and the
LM386 8-pin ICs.
The IC body has a small notch, or key, molded at one end, indicating pins 1 and
8. A small dimple-like body-molding is often found adjacent to pin 1. Some IC
packages may include both key indicators.
1 2 3 4
8 7 6 5
Installation
Key
Key
Installation
Pin Numbers
! ! 6. Align the body of the NE602 to correspond with the key of socket U1.
Loosely insert the NE602 pins 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.
The socket and IC keys both face capacitor C8.
! ! 7. In a similar manner, install the LM386 into socket U3. The notches
should face towards capacitor C15.
! ! 8. Locate the 78L05 voltage regulator IC.