4( ) Select the brown and the yellow leads from the power
transformer, twist them neatly together, and connect
both leads to power switch lug #3 (S-2).
NOTE: If this unit is being wired for 100 volts AC line, select
instead the orange and the orange-white leads, twist them to-
gether, and connect both leads to power switch lug #3 (S-2).
If this unit is being wired for 220 volts AC line, select instead
only the orange lead, and connect it to power switch lug #3 (S).
If this unit is being wired for 240 volts AC line, select instead
the orange and the black-white leads, twist them together, and
connect both leads to power switch lug #3 (S-2).
5( ) Select the remaining conductor of the line cord, and
connect it to power switch lug #2.
6( ) Select the last .02 mfd disc capacitor, and cut its
leads to
1/2
" (1.3 cm) each. Connect one lead to
power switch lug #2 (S-2). Connect the other lead
to power switch lug #1.
7( ) Select the black and the black-white leads from the
power transformer, twist them together, and connect
both leads to power switch lug #1 (S-3).
NOTE: If this unit is being wired for 100 volts AC line, com-
plete step 7, as indicated above.
If this unit is being wired for 220 volts AC line, select only the
black transformer lead, and connect it to power switch lug #1
(S-2). In addition, select the yellow transformer lead, and con-
nect it to terminal strip T-6 lug #13 at the tip (S). Also, select
the brown and the black-white transformer leads, twist them to-
gether, and connect both leads to T-6 lug #14 at the tip (S-2).
If this unit is being wired for 240 volts AC line, select only the
black transformer lead, and connect it to power switch lug #1
(S-2). In addition, select the yellow transformer lead, and con-
nect it to terminal strip T-6 lug #13 at the tip (S). Also, select
the brown transformer lead, and connect it to T-6 lug #14 at
the tip (S).
This completes the soldering of the underside of the
Mark VI. Notice that terminal strip T-6 is without con-
nection, unless the unit has been wired for 220 or 240 volts
AC line. Particularly check your soldering on the power
switch to see that when the front panel is in its final posi-
tion, no strands of wire can touch the edge of the choke, or
another connection. Now turn the amplifier over and shake
out any bits of solder or pieces of wire or insulation.
8( ) Very carefully remove the two
1/2"
#10 black screws
which have loosely attached the front panel assem-
bly to the chassis, and allow the speaker fuse and
the power switch to support the panel. Now select the
bottom plate with slanted sides, invert it over the
chassis, and slide it in place so that its front flanges
fit between the chassis and the front panel.
9( ) Select the two metal handles and the four
1/2
"
#10
black screws with large heads. Attach the handles
to the front of the panel with the screws inserted
from the front. The screws engage threaded nuts in
the chassis and the front flanges of the bottom plate.
Firmly secure the screws.
Turn the amplifier right side up, and position it so that
the front panel faces away from you. The final wires to the
meter will be connected. Refer to the accompanying sketch.
10( ) Select the remaining two solder lugs, and the two
#10 nuts (without lockwashers). Remove the short-
ing wire on the meter, if supplied. Install a solder
lug on each meter terminal, position the lugs as
shown, and secure each with a nut.
11 ( ) Prepare a 4" (10.5 cm) black wire. Connect one end
to lamp socket lug #3 (S). Connect the other end to
lamp socket lug #2 (S).
12 ( ) Select the black and the violet-white twisted pair,
and connect the free end of the violet-white wire to
lamp socket lug #4 (S). Connect the free end of the
black wire to lamp socket lug #1 (S).
13 ( ) Select the yellow wire from MS lug #5, and connect
the free end to meter terminal lug #1 (S).
14 ( ) Select the free end of the remaining black wire from
G2, and connect it to meter terminal lug #2 (S).
The wiring of the Mark VI is complete.
15 ( ) Install the tubes in their respective sockets. The 7199
fits through the chassis hole in the socket on PC-44.
The delay relay fits the 9 pin socket on the chassis.
The 8417 tubes fit in the four large 8 pin sockets.
16 ( ) Install one of the 5 ampere fuses in the power fuse
holder, and the other 5 ampere fuse in the cap of
the speaker fuse holder, and install it.
17 ( ) Remove the protective cardboard from the trans-
formers, if used as suggested earlier.
18 ( ) Slide on the cover so that its angled side flanges fit
inside the vertical angled sides of the bottom plate.
See that the back edge of the cover fits in front of
the several input and output connectors on the top,
back of the chassis. Secure it and the sides with the
eight 1/4"
#10 black screws.
19 ( ) Clean the back of the chassis near the
CAUTION
printing. Remove the backing from the serial number
label and affix it to the chassis.
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