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20 W Stereo Integrated Audio Amplifier
L-shaped brackets are provided to temporarily mount the power management PWB on its side
in order to make connections, and later for maintenance if needed. Attach the brackets to the front
mounting posts adjacent to the power transformer leads. Temporarily mount the PWB at a right
angle to the chassis deck using the #6 hardware provided.
Important
: the brackets should rest
against the component side of the board. If mounted with the brackets against the foil side of the
board, component damage may result. See Figure 6.1.
When making connections to the power management PWB, support the board from the foil
side to prevent cracking the PWB at the right angle attachment points.
– Prepare a 26-inch long #22 black wire. Attach a spade terminal to one end of the wire;
connect to the center terminal of the front panel power switch,
SW51
.
– Prepare a 26-inch long #22 black wire. Attach a spade terminal to one end of the wire;
connect to one of the outside terminals on the front panel power switch,
SW51
.
– Twist the two black wires together. Route to the rear of the chassis using the front cable
clamp along the left channel PWB. Attach quick-disconnect terminals to the ends of each
wire.
– Prepare a 26-inch long #22 blue wire. Attach one end of the wire to the center terminal of
the front panel Auto-Off switch,
SW202
. Solder.
– Prepare a 26-inch long #22 blue wire. Attach one end of the wire the remaining terminal
on the front panel Auto-Off switch,
SW202
. Solder.
– Twist the two blue wires together. Route to the rear of the chassis using the available cable
clamps along the left channel PWB.
– Find the 4-terminal Molex connector and pins. Attach a pin to each blue wire. Insert a
wire/pin into position #3. Insert the other wire/pin into position #4 on the connector. Insert
pins into the two unused positions (#1 and #2).
– Prepare a 28-inch long #22 blue wire. Attach a quick-disconnect terminal to one end of the
wire. Connect to the
40Vdc
post on the preamplifier PWB.
– Prepare a 28-inch long #22 black wire. Attach a quick-disconnect terminal to one end of
the wire. Connect to the
GND
post on the preamplifier PWB.
Содержание JC Whitaker 20 W Stereo Integrated Audio Amplifier
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Страница 20: ...20 WhitakerAudio Figure 1 3 Power management circuit for the 20 W integrated stereo amplifier ...
Страница 38: ...38 WhitakerAudio Figure 3 1 Component layout for the Amplifier PWB 1 right board ...
Страница 40: ...40 WhitakerAudio Figure 3 2 Rectifier PWB component layout ...
Страница 43: ...43 20 W Stereo Integrated Audio Amplifier Figure 3 3 Component layout for the Amplifier PWB 2 left board ...
Страница 45: ...45 20 W Stereo Integrated Audio Amplifier Figure 3 4 Layout of the speaker terminal PWB ...
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