The Printed Circuit Board (PCB) had two sides:
Component side
Track Side

On which side of the PCB components will be inserted from ?
Components will be placed on the PCB, in OPPOSITE to track side.


REFERENCE: http://electronicsisfun.in/electronic-harmonium/

COMPONENT SIDE TRACK SIDE
COMPONENT SIDE TRACK SIDE
COMPONENT SIDE TRACK SIDE
COMPONENT SIDE TRACK SIDE
COMPONENT SIDE: Insert components from this side TRACK SIDE: Solder the pins (legs) of the components from this side



The component placement s shown below:














Identify the Pin Number 1 of the IC
1 2 3