3D Model	Overlay	Plan View
Column 1 PCB
Column 2 PCB
ES37 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. Assemble the 2x Switch Carrier Boards
2. Assemble the 8x Jack Carrier Boards
3. Fit all components to the boards except for the sub-assemblies
4. Fit 1x switch sub-assembly and 4x jack sub-assemblies to the Column 1 board but do not solder
5. Offer the assembly up to the front panel and secure using the supplied nuts
6. Check that the PCB is parallel to the edge of the panel
7. Solder the sub-assemblies in to place
8. Repeat for the Column 2 board
9. Mount the back board ensuring it is correctly aligned with the IDC headers
10. Fit the jumper shunt on JP102 in the position marked ‘4’

Addendum

There is an error with the footprint for D301

• If fitting the LM336 you should cut off Pin 1 first and not solder that pin
• If fitting TL431 you should refer to this image for the correct orientation.