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Insert the tinned green wire into the GND hole of the input selector’s
TB13. Insert the wire into the solder side of the PCB, and solder it on the
component side.
Insert the tinned red wire into the POS12 hole of the input selector’s TB13.
Insert the wire into the solder side of the PCB, and solder it on the
component side.
Insert the tinned black wire into the NEG12 hole of the input selector’s
TB13. Insert the wire into the solder side of the PCB, and solder it on the
component side.
Install the Op-amp Integrated Circuits into the Sockets
You’ll find that the pitch of the rows of IC pins will be a bit wider than the pitch of the
rows of socket pins. You have to bend the rows of pins in from the sides to make the IC’s
fit more easily into the socket. Do it a little bit at a time, as it’s kind of annoying to have
to bend them back. Before you install them,
double check the orientation of the IC’s
.
Figure 33-Insert opamp so semi-circular indentation in IC package matches silk-screen feature
Designation Value
Description
Done
U2
OPA2134
Dual Opamp
U3
OPA2134
Dual Opamp
U4
OPA2134
Dual Opamp
Mount the Input Selector PCB
Insert the RCA connectors on the input selector PCB through the accompanying holes in
the back panel. Wiggle the board until the jack insulators fit through the back panel holes
and the 4 PCB mounting holes line up with the 4 standoffs in the chassis.
