3D Model	Overlay	Plan View
Column 1 PCB
Column 2 & Column 3 PCB
ES21 PCB

Constructors should refer to the Component Overlays along with,
the Bill of Materials for the current value of all components, and
the General Construction Notes for general PCB assembly guidelines.

1. Start by preparing the 10x LEDs as per the instructions in the General Construction Notes
2. Fit the 3x ferrules to the pushbutton switch as per the instructions in the General Construction Notes
3. Fit all components to the boards following normal assembly guidelines excluding the 10x LEDs and MANUAL pushbutton switch
4. Fit the Column 2 assembly to the front panel
5. Mount 5x LEDs ensuring the correct orientation of the LED wires in to the board and solder in to place
6. Remove the assembly and repeat for the Column 3 assembly
7. Mount the pushbutton switch on to the Column 1 assembly but do not solder
8. Offer the assembly up to the front panel and secure using the supplied nuts and then solder in to place
9. Mount the other assemblies on to the front panel and secure in to place
10. Fit the back-board assembly ensuring the correct alignment of the IDC Receptacles in to their respective sockets