Dynatuner FM-1 Istruzioni per il montaggio Operazione di allineamento - Pagina 12

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32(
v)
Connect one end of a 1
J.1"
green wire to eyelet A
of PC- 7 on the top of the board. Solder it from the
bottom of the board. Connect the other end to the top
of eyelet A on PC-B and solder it from the bottom.
33(......yConnect the end of the bare wire from eyelet #3 on
PC-7 to lug
1/2
of the three screw terminal strip.
34
(0"
Connect the wires from each side of antenna coil
Ll to the screw terminal nearest it. Observe the
wire arrangement in the pictorial diagram. Follow it
precisely. Solder the wires to screw terminals #1 and
#3. Connect the twisted wire from the center of the
J'ntenna coil Ll to lug /1-2 of the terminal strip (S).
35(
It'
Connect a
1"
bare wire from eyelet #23 on PC-B (S)
to eyelet B (S). This jumper should be kept close
to the bottom of the board.
front Panel Assembly
1
(~ount
the nine pin socket which has a mounting
flange, on the top of the right angled section on the
rear of the front panel. Use two sets of
il4
hardware.
Check the pictorial for the proper position of the
blank area between the pins.
2(
v1
Place the
:Ki"
lockwasher on the shaft of the volume
control and insert the control into its hole in the
front panel. Locate the lugs as shown in the pictorial.
Fasten loosely with a
%"
nut.
3(
J
Connect one end of a 2" black wire to lug #1 of the
volume control (S).
4(\yConnect one end of a
2~"
green wire to lug #2 of
the volume control
(8).
5
(~
Connect one end of a 3" red wire to lug
113
of the
volume control
(8).
6(
1/
Twist together a 9" black wire and a 9" green wire.
Connect one end of the black wire to pin
#5
on
socket
VB
(S). Connect the adjacent end of the green
wire to pin
#4
on socket
VB
(S).
7
(vr
Connect one end of a 2,Y:i" black wire to pin
#3
of
socket
VB
(S).
8(
J
Connect one end of a 2" green wire to pin
#]
of
socket
VB
(S).
9(
v1
Co.nnect one end of a 3" red wire to pin #6 of socket
V8 (S).
10(
v)
Cut a 2" red wire. Strip one end Y:;". Feed the longer
bared end through pin #9 of socket V8 and connect
it to pin #7. Solder both pins.
11
(vi
Slide the tuning dial indicator disc fully onto the
tuning capacitor shaft. The hub goes on the shaft
first, and its flat side engages the flat section of the
~rass
shaft.
12( ) Feed the twisted black and green wires from the
socket on the front panel through the small slot in
the front of the chassis. Fasten the front panel to
the main chassis with three sets of #4 hardware.
13
(J
Twist together the three wires from the volume con-
trol. Connect the free end of the black wire to eyelet
#-37 on PC-B. Feed the wire through the eyelet from
the top of the board, and solder it from below. At
eyelet #37 a large amount of solder should be flowed
onto the board, and over to the chassis, to make a
good ground contact to the chassis.
10
14(~Connect
the free end of the green wire from the
volume control to eyelet
113B
on PC-8. This wire is
connected on top of the board and soldered from
ge
1ow.
15( /Connect the free end of the red wire from the
volume control to the top of eyelet
1136
on PC-8,
i;
and solder it from below. Eyelet #36 is located
between the 100,000 ohm resistor (brown, black,
yellow) and the mylar capacitor C29. Position the
leads as shown in the pictorial, and keep them clear
of the board.
16v{ Connect the free end of the black wire from pin #3
of socket
VB
to the top of eyelet #25 on PC-8, and
solder it from below.
17( ~Connect the free end of the green wire from pin
III
of socket V8 to the top of eyelet
,¥26
on PC-B and
solder it from below.
18(
~
Connect the free end of the red wire from pin
#6
of
socket V8 to the top of eyelet #30 on PC-8 and solder
it from below.
19(
II' "
Connect the free end of the red wire from pin #9 of
socket V8 to the top of eyelet
1128
and solder it from
below. Eyelet #28 is between T5 and the 680,000
• / ohm resistor (blue, gray, yellow).
20W)
Mount the discriminator transformer T5 (432002).
This transformer has five connecting lugs and two
mounting tabs. :It can only be mounted in one
position. Press it firmly to the board and solder the
mounting tabs and the five connecting lugs. Do not
use excessive heat on the five lugs. Avoid using too
much solder, which could flow into and damage the
yansformer.
21
(vr
Thread the black and green pair of wires from socket
VB
through grommet .#2 and connect the black wire
to lug #2 of the three lug terminal strip. Solder all
three wires at the top of the lug. Connect the green
wire to lug #1 of the three lug terminal strip. Solder
al!)ive wires at the top of the lug.
22( ~sert
the end of the line cord through grommet #3
in the rear of the chassis and pull through about 6
inches. Tie a knot
4
inches from the end, and pull
the line cord back so that the knot seats against the
grommet. Split the two conductors of the line cord
down'to the knot. Connect one of the two leads to
lug #1 of the AC outlet (S). Connect the other lead
to lug
#3
of the three lug terminal strip (S).
The wiring of the tuner is now completed. It is
wise at this point to go back and check all solder
connections in the unit. One poor solder connection
can upset the performance of your tuner. Check to
be sure that the position of the wires in your tuner
agrees closely with the pictorial diagram and the
photographs. The pictorial diagram must necessarily
be exaggerated in some cases for clarity, but any
discrepancies between it and the photographs are of
no consequence. All of the leads should be neatly
dressed along the chassis.
Insert the tubes in their respective sockets as
shown in the pictorial diagram. Install the tube
shields, making certain that the ground straps on
the sockets slip between the shield and the tube.
The larger tube shields go on the nine pin tubes
and the smaller ones on the seven pin tubes. No
shields are used on V8 or V9. Install the dial light
and the fuse.