WhitakerAudio J C Whitaker 20 W Stereo Audio Amplifier, Manual

Page: 126 / 194

126
WhitakerAudio
– Prepare an 18-inch long #18 stranded black wire. Attach quick-disconnect terminals to
each end of the wire. Connect between the hot terminal of filter FL51 and the AChot post
on the power management PWB. Use a pair of long-nose pliers to make the connection on
FL51. Route the wire through the nearby cable clamp.
Examine the filter connections. The black wires on the Line and Load terminals should be on
the same side of the device.
– Prepare a 19-inch long #18 stranded black wire. Attach quick-disconnect connectors to
each end of the wire. Connect the wire between the Hot-1 post on the right channel PWB
and the LoadH post on the power management PWB. Route the wire through the nearby
cable clamp
– Find the #22 black twisted pair wires from the front panel Power switch, SW51. Connect
to the Switch1 and Switch2 posts on the power management PWB.
– Prepare two 23-inch long #22 brown wires, twisted. Attach quick-disconnect terminals to
one end of each wire. Connect the twisted pair to the SW203 posts on the power
management PWB. Route the free end of the wires to the power management expansion
PWB, using the available rear cable clamps. Attach quick-disconnect terminals to the free
ends of the wires. They will be connected later.
– Insert the 4-terminal Molex connector on the CONN201 post on the power management
PWB. The blue wires go to terminals #3 and #4.
– Check the position of R209. It is typically set for center rotation, which provides an auto-
off delay of about two hours.
– Find the #22 red 600 V wire from the B+ terminal on the left channel PWB. Connect to
the B+sense post on the power management PWB.
– Using the available tie wraps, organize the cabling to the power management PWB, and to
the right channel PWB. Be certain to provide sufficient wire lengths to permit the power
management PWB to be moved into position on the four mounting posts.
– Remove the L-shaped brackets holding the power management PWB. Set aside for use
later if needed.