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ALIGNMENT INSTRUCTIONS (RADIO) (SG-160F)
Control Setting and Procedure:
4.
Volume Control .........0cccee
Maximum (AM-IF and RF, FM-RF),
5.
Minimum
(FM-IF)
6.
POWER SWIIGCW cesseccpiceetwaanarie ON
Output of signal generator should be no higher than
2.
Tone Control...
eee
Maximum
necessary to obtain output reading.
3.
Balance Control..
Center
7.
Make certain that speaker system is connected to
4.
BandiSeleCtOr cvcu.sscsssasnesveneasives AM, FM AUTO
AM ANT. Trimmer
the tuner when aligning.
(1500 kHz)
Cc
AM 2nd IFT
AM 3rd IFT
)
(455 MHz)| 1208
(455 kHz)
ego
AM 1st IFT:
Z)
i
Pr
=Li02-=A=7A5-=
=]
j i
iy aa
ore
| (455 MHz)
/
a0BCROOE
FM Disc. IFT
FM Det Trimmer
!
P
201
L201
7202
1205
fe]
(10.7 MHz)
ele
fe
CONNECTION
FREQUENCY
Fashion loop of severa
turns of wire and radiate
signal into loop of
receiver.
455 kHz
30% Mod.
with 400 Hz
Point of non-
about 600 kHz) | (Imp. 4)
AM-IF AND RF ALIGNMENT
FM OSC
(106 MHz)
;
Oc
Tri
@ cT101,
* |
(106 Miz)
AM OSC Trimmer
ioe | S|
@
| SS
ei is de
ieee
tpt 103 g@
Riot ic.
T204
Lame
(10.7 MHz)
i
®
ol
T201
(a
FM Ist IFT
(99 yt
D
(10.7 MHz)
(Primary)
|
pe a
FM 2nd IFT
(10.7 MHz)
FM 1st IFT
LS
aan 'ea
=
(10.7 MHz)
(Secondary)
AM
OSC
Coil
(10.7 MHz)
(550 kHz)
SIGNAL
GENERATOR OR
STEP
SWEEP GENERATOR
RADIO DIAL
INDICATOR
ADJUST
REMARKS
SETTING
(VTVM or SCOPE)
Output meter across
interference (on/ | speaker jack (L)
T202 (1st IFT)
T205 (2nd IFT)
T208 (3rd IFT)
output.
Fashion loop of severa
2
turns of wire and radiate
a hae
signal into loop of
with 400 rae
receiver.
Fashion loop of severa
3
turns of wire and radiate
Eales
signal into loop of
with 400 Hy
receiver.
High side through 0.001
10.7 MHz
1
mfd to point TP 1.
(400 kHz
Common to chassis.
SWP.)
{| __
————
550 kHz
(7.5 mm)
(Imp. 42)
1500 kHz
(83.9 mm)
(Imp. 4@)
* Cement antenna bobbin with wax after completing alignment.
FM-IF AND DETECTOR ALIGNMENT
Point of non-
interference (on/
about 98 MHz) | [PS.
High side through 0.001
10.7 MHz
2
mfd to point TP 1.
(400 kHz
Common to chassis.
SWP.)
a)
|
Output meter across
speaker jack (L)
L1
(ANT Coil)
Output meter across
speaker jack (L)
Connect vert. amp.
of scope to point
Common
to chassis.
L201 (OSC Coil)
(L1) along ferrite
core.
CT202
(OSC Trimmer)
CT201
(ANT Trimmer)
output.
T101 (FM 1st IFT)
T102 (FM ist IFT)
T201 (FM 2nd IFT)
T204 (FM 3rd IFT)
T206 (FM Disc. IFT)
amplitude and
(Refer to Fig. 6)
Connect vert. amp.
Common
to chassis.
Point of non-
rs
amplitude and proper
interference (on/
ca
© polns
EM Dieo IFT)
linearity between
about 98 MHz)
'
+100 kHz markers.
(Refer to Fig. 7)
Adjust for maximum
Adjust for maximum
output by sliding coil
Adjust for maximum
Repeat steps (2) and
(3).
Adjust for maximum
symmetrical curve
Adjust for maximum
* Before aligning step 1, turn the core of T207 fully counterclockwise.
* Before aligning step 1, unsolder lead of test point 3 (TP3) and resolder it after alignment.
FM-RF ALIGNMENT
Connect to antenna
clip through
90 MHz
1
Dummy antenna.
30% Mod.
Common to chassis.
with 400 Hz
(Refer to Fig. 8)
90 MHz
(15.8 mm)
| (mp. 40)
Output meter across
speaker jack (L).
—r
L104 (FM OSC Coil)
L102 (FM DET Coil) | output.
Adjust for maximum
Connect to antenna
clip through
106 MHz
2 | Dummy antenna.
30% Mod.
Common
to chassis.
with 400 Hz
(Refer to Fig. 8)
CT101
Adjust for maximura
Output meter across
:
106 MHz
speaker jack (L)
(FM OSC Trimmer)
| output.
(79.9 mm)
(imp.
49)
CT102
Repeat steps (1) and
Pp.
(FM DET Trimmer) | (2).
10.7 MHz
FIG. 6
SG-160A/160F
* As three output readinas will be present, adjustments must be made at center frequency.
10.7 MHz
SSG
|
(Imp. 75 Q)
759
|
|
FIG. 7
FIG.
8 DUMMY ANTENNA
ALIGNMENT INSTRUCTIONS
(CASSETTE DECK)
Notes:
1. Function Selector
2. Power Source
3. Push Buttons
CIRCUITS
AC BIAS OSCILLATOR
& ERASE
VOLUME
VTVM CONNECTION
CONTROL
ADJUSTMENT
REMARKS
Connect positive side to TP2
and negative side to TP1.
MIN
VR801
(OSC Level
Adjust)
Adjust VR801
for
6+0.2 V reading
on VTVM-1.
AC BIAS OSCILLATOR
& ERASE
Connect positive side to TP4
and negative side to TP3.
AC BIAS OSCILLATOR
& ERASE
Connect positive side to TP5
and negative side to TP3.
L802
(AC Bias
Trap Coil)
L803
(AC Bias
Trap Coil)
Adjust L802 for
3.2 + 0.2 mV reading
on VTVM-2.
Adjust L803 for 3.2+ 0.2mV
reading on VTVM-2.
Repeat steps (1), (2)
and (3) and check each
indication of VTVMs.
Notes:
1. 1801
is pre-aligned.
Do not touch it.
. Do not touch R/P Head or Erase Head when adjusting.
VTVM-2
oe pls
ue
L803 Bias Trap Coil (R)
L802 Bias Trap Coil (L)
Les
uell
oa
| © |
FIG. 9
RECORD/PLAYBACK
HEAD AZIMUTH ADJUSTMENT
Play back a Standard Alignment Tape and turn azimuth adjusting screw
for maximum
loudness.
=
L803
L ©
T801
OSC Coil
VR801 OSC Level Adjust
TP
Nh
Azimuth Adjusting Screw
REC/PLAYBACK HEAD
SG-160A/160F
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