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(3) Install connectors J401-J403, and J410. Make sure each connector is seated flat
against the circuit board. This is very important, because any misalignment will keep the
circuit board assembly from fitting properly in its mating holes on the rear panel. If any
of the pins on J410 (the power jack) are too tight to fit into the circuit board pads, then
trim the pins as necessary with wire cutters.
(4) Install the triple RCA phono jacks at J404 and J405, and the double RCA phono jacks
at J406-J409. Again, take care to ensure that the jacks are seated snugly on the circuit
board. They should mount perfectly flush onto the board, and not tilt or lean in any
direction.
Be certain the modular RCA phono jacks are seated flush on the circuit board before you solder their
pins. Otherwise the jacks won’t fit into the cutouts on the rear panel.
(5) Clean and inspect all solder connections. Note that there are three unused pads,
labeled “J411”, “J412”, and “SPARE.” J411 and J412 are in parallel with two of the
RCA Phono jacks (J406 and J407, respectively) and can be used if builders wish to add
other types of connectors to the rear panel (e.g., banana jacks or terminal strips). Set aside
the completed rear panel assembly.
Completed rear panel circuit Board. For future reference, note the orientation of the ribbon cable
(which has not yet been installed).
