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Notes:
—_
ALIGNMENT
INSTRUCTIONS (RADIO)
Audio Generator
Attenuator
Function Selector
Volume Control
Batance Control!
STEP
ALIGNMENT
INDICATOR
AF GAIN BALANCE
VTVM
of SCOPE to left
ALIGNMENT
and right speaker jacks.
FREQUENCY
& DISTANCE
ON DIAL SCALE
To accurately align to the proper frequencies on the dial scale, refer to Table at right
and mark the edge of the dial scale accordingly, using the "'Start Point'' mark on the
dial scale as a reference point.
:
Notes:
1. Volume Control.
.
AFC Switch
CODNAMERWN
.
.
.
.
=
=
©
8
©
&
&
.
.
.
. Treble Control
..
Bass Control...
.
Balance Control
.....
Function Selector...
.
Band Selector
......
_..
OFF (FM-IF & RF)
~ ~ 1kHz into L & R AUX inputs
Connect Audio Generator
ei os feed "AUX"
.....
Maximum
Center
-_
=
8
#
«
_ .
. Maximum
(AM-IF
& RF, FM-RF):
Minimum
(FM-IF)
...
Center
...
Center
Center
RADIO
AM, FM, FM STEREO
ADJUST
VR7/01
Power Switch
..
.
Output of signal generator should be no higher than necessary to obtain output reading.
Make certain that speaker system is connected to the tuner when aligning.
>=
« "ON
SIGNAL
GENERATOR
or
SWEEP
GENERATOR
CONNECTION
FREQUENCY
Fashion loop of
several turns of wire
and radiate signal
into loop of receiver.
Fashion loop of
several turns of wire
and radiate signal
into loop of receiver.
Fashion loop of
several turns of wire
and radiate signal
into loop of receiver.
Fashion loop of
several turns of wire
and radiate signal
into loop of receiver.
Fashion loop of
several turns of wire
and radiate signal
into loop of receiver.
Fashion loop of
several turns of wire
and radiate signal
into loop of receiver.
Fashion loop of
several turns of wire
and radiate signal
into loop of receiver.
*1.
Cement antenna
bobbin with wax
High side thru.
0.001 mfd to point
TPT,
Common
to chassis.
High side thru.
0.001 mfd to point
TP 1:
Common
to chassis.
.
455 kHz
30% Mod.
with 400Hz
145kHz
| 30% Mod.
with 400Hz
285kHz
30% Mod.
with 400Hz
550kHz
30% Mod.
with 400Hz
1500kHz
30% Mod.
with 400Hz
SETTING
AM-IF
& RF ALIGNMENT
Point of non-
|
interference
(on/about
600k Hz)
145kHz
(10.4mm)
285kHz
(125.8mm)
RADIO
DIAL
INDICATOR
(VTVM
or SCOPE)
Output meter across
speaker jack (L)
(Imp. 82)
Output meter across
speaker jack (L)
(Imp. 8Q)
Output meter across
speaker jack (L)
(Imp. 82)
950k Hz
(14.5mm)
1500kHz
(123.8mm)
5. OMHz
30% Mod.
with 400Hz
18MHz
30% Mod.
with 400Hz
10.7MHz
(400kHz
SWP.)
18MHz
~{133.1mm)
Output meter across
speaker jack (L)
(Imp. 8)
Output meter across
speaker jack (L)
(Imp. 82)
Output meter across
speaker jack (L)
(Imp. 8Q)
Output meter across
speaker jack (L)
(Imp. 8Q)
after completing alignment.
FM-IF & DETECTOR
ALIGNMENT
Point of non-
interference
{(on/about
98MHz)
10.7MHz
(400kHz
(SWP.)
Point of non-
interference
(on/about
98MHz)
Connect vert. amp.
of scope to point
TP5.
Common to chassis.
Connect vert. amp.
of scope to point
Pa:
Common to chassis.
REMARKS:
right
channel
,
285kHz
x
5.9MHz
EM
18MHz
9O0MHz
|
106MHz
ADJUST
T202 (ist
IFT)
T204 (2nd
IFT)
T206 (3rd _ IFT)
L201
(LW ANT Coil)
L204 (LW OSC Coil)
CT201
(LW ANT
Trimmer}
CT204 (LW OSC Trimmer)
L202 (MW ANT Coil)
L205 (MW OSC Coil) .
CT202 (MW ANT Trimmer)
CT205 (MW OSC Trimmer)
L203 (SW ANT Coil)
L206 (SW OSC Coil)
CT203 (SW ANT Trimmer}
CT206 (SW OSC Trimmer}
T101
(FM ist
IFT)
T7201 (FM 2nd
IFT)
T7203 (FM 3rd_
IFT)
T205 (FM 4th
tFT)
T7207 (FM Disc. IFT)
T208
(FM Disc. IFT)
* Before aligning step 1, turn the cores of T207 and T208 fully counterclockwise.
Make
sure
two
VTVMs
are
balanced
so that
output
equais
left.
Distance from ''Start Point'
10.4mm
125.8mm
14.5mm
123.8mm
54mm
133.i1mm
15.3mm
113.7mm
REMARKS
Adjust for maximum
output.
Adjust for maximum
output.
Adjust for maximum
output.
Repeat steps (2) and (3).
Adjust for maximum
output by sliding coil
(L202) along ferrite core.
Adjust for maximum
output.
Repeat steps (2) and (3).
Adjust for maximum
- | output by sliding coil
(L202) along ferrite core.
Adjust for maximum
output.
Repeat steps (2) and (3).
Adjust for maximum
amplitude and
symmetrical
curve.
(Refer to Fig. 10-a)
Adjust for maximum
amplitude and proper
linearity between
£100kHz markers.
(Refer to Fig. 10-b)
MODEL SG-2050L_
[5)
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