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m ALIGNMENT INSTRUCTIONS
Notes:
, Output level control
. Maintain line voltage at rated voltage.
FM
MPX
PILOT
ALIGMENT
4 ee
EGE
hi
; Output of signal pecker should be no higher than necessary
Using a frequency counter
Using alternate system
. M
igh
biend switc
to obtain an output reading.
-
-
-
ete
. Rec/Playback switch
. 3000 FM dummy antenna
Refer to fig. 1
@® 98MHz Non-modulated mono signal applied to set.
® Apply stereo signal from generator or stereo station to tuner,
. Band selector switch
. Detector
Refer to fig. 2
14
g Muting switch to ON.
@ Adjust VR6OT until stereo eee
Ne up,
3) Connect frequency counter to TP6O1
through 100kN resistor.
Cement arm of VR6O1 as shown in fig. 4 .
SIGNAL GENERATOR
INDICATOR
A
or SWEEP GENERATOR
Pl ae
(VTVM or SCOPE)
ee
REMARKS
® Adjust VR6O1 to 19kHz £30Hz.
CONNECTION
[FREQUENCY | [DISTANCE]
(DISTORTION METER)
STEREO SEPARATION ALIGNMENT
AM ALIGNMENT
Notes:
1. Stereo modulator
.................
Connect stereo modulator output to Bar MOD Ad
7 signal saa
i g h
ff
AOA
St
TY APP
fo
intermal
OSC...
Hot signal modulation...
..
Sweep generator high
- | 7404 (ist 1ET) (P)
;
internal OSC
i
:
side through 0.0014F
ABBKHz
Piont of non-
| Connect vertical amplifier of
| T405 (1st IFT) (S)
Adjust for maximum
2. Signal generator
..............-..
Frequency approximately 98MHz. Output level 72dB (IHF), Modulation mode to FM
to TP2. Common to
inter-ference
scope to TP3.
T406 (2nd IFT)
output
3. Band selector switch
...............
chassis.
-
1
SIGNAL GENERATOR
ee
MODULATOR
INDICATOR
ADJUSTMENT
POINTS
REMARKS
-
Fastin ore ot ia | goonhi |, 800k,
[Connect Vive orscopete. [Fane (OSE Ca
[Aauat
fee narinumn
SONI fo
= MODE ert MOD SATE he
score!
signal into loop of tuner. | with 400Hz)
[17.9mm(%")]
| output terminal of set.
T402 (DET Coil)
of L401 by screw driver.
LEAK CARRIER ALIGNMENT
Fashion loop of several
1500kHz
CT403(OSC Trimmer) | Adjust for maximum
FM antenna terminal
Only Pilot Signal 19kHz
| Connect VTVM
or scope
V R602 (Leak Carrier)
Adjust for minimum
.
me
turns of wire and radiate | (30% Mod
de, eee
earubegeaa Pde, ot oo te
CcT401 fase Trimmer) | output.
15
through dummy antenna. | (10% modulation)
to output terminals.
V R603 {Leak Carrier)
output of set.
signal into loop
of tuner. | with 400Hz)
:
CT402(DET Trimmer) | Repeat steps (2) and (3)
8
°
FM-IF ALIGNMENT
:
P
OUTPUT TERMINAL STEREO SEPARATION
ALIGNMENT
3
FM antenna terminal
Connect VTVM
or scope
to
:
ini
Sweep generator high
Point of non.
| COnMect vertical amplifier of
Adjust for maximum
16 | through dummy antenna.
L [and R]
OUTPUT terminals erouan
VR801
Adjust for minimum
side through 0.001 uF to
:
scope through detector to
T1 (Main IFT)
amplitude and symmet-
(30% modulation)
(OUTPUT SEPARATION)
right (and left) output.
inter-ference.
TP101.
TP1.Common
to chassis.
tical curve.
low pass filter, Refer to fig.5
T2B4 MUNIRIET
| Adicettor mekinum hers
REC OUT TERMINAL STEREO SEPARATION ALIGNMENT
Point of non-
Connect vertical amplifier of
(P
and proper linearity.
:
s
ans
10.7MHz2
inter-ference
| scope to TP251.
7252 (Muting IFT)
Adjust center frequency
7
FM antenna terminal
L [and R]
Connect VTVM
or scope to
VR701
Adjust for minimum
(S)
as step 4. Refer to fig. 3.
through dummy antenna. | {30% modulation}
Re
Rai
ay through
(REC OUT SEPARATION)
right (and left) output.
Sweep generator high
side through 0.0014F to
TP1. Common
to chassis.
+4
Point of non-
Connect vertical amplifier of
| 17101(DISCRI
IFT)(P)}
Adjust for maximum out-
inter-ference
scope to output terminal of set] Brown Core
put noise level.
T102(DISCRI
IFT}(S)|
Adjust for center of tuning
@ Apply 60 dB 98M#z FM signal to antenna terminal.
@® Reduce selector switch to ''pink noise
Green Core
meter indication
18 |@ AF signal level at REC OUT terminal should then be 0 dB.
@® Adjust VR351 so that the output is then 6 dB less than the
previous output.
Point.of non-
inter-ference
Non-Signal
Tuning meter of set.
M-RF ALIGNMENT
L6 (OSC Coil)
Connect to FM antenna
9OMHz
L4 (DET Coil) (S)
:
P
i
90MHz
Connect VTVM
or scope to
H
Adjust for maximum
Z
ene
erage Hause
Connect to
FM antenna
z
CT4(DET Trimmer}(S)
| Adjust for maximum
terminal through FM | (100% Mod. | 4.4 Lobel Cote
ey OF SCOPE tO
| ET3(DET Trimmer\(P) | outout,
[eon] aaanr
his
dummy antenna.
with 400Hz)
:
B
et
CT2(ANT Trimmer)(S) | Repeat steps (8) and (9)
CTI(ANT TrimmerXP)
DISCRI IFT
DISCRI IFT
AM 2nd IFT
FMOSC
FM DET (Secondary)
FM DET (Secondary)
FM IFT
FM DET (Primary)
FM DET (Primary)
FM ANT (Secondary)
{Secondary}
(Primary)
458kHz
9OMH2
+06MHz
9OMHz
10.7MHz
QOMHz
}O6MHz
90MHz
FM MONO DISTORTION ALIGNMEN
Adjust for minimum
ae
he
bos Mae
98MHz
Connect distortion meter to
|1T101 (DISCRI IFT)(P)j distortion meter indica-
(FM tF output)
TP1O1
{FM IF input)
Te 1
ud
FM ANT {Primary)
9OMHz
SIGNAL METER ALIGNMENT
100d
B (IHF){about 100m) | -
ct
FM ANT
(Primary)
MHz
cT2
ANT
(Secondary)
Miz
TP251
MUTING LEVEL ALIGNMENT
Note:
Muting switch to ON (Lever is center position)
cT401
Se
AM ANT
1500kHz
Connect to FM antenna
pet
ed es
ogee tied
98MHz
Connect VTVM
or scope to
Adjust that output can
7252
1405
[ T404
7402
Output level of SG.
with 400Hz)
SURDUE ASmmInal OF Ser.
pe obtained:
fSeondev]—Weremmryh
Santry) = tprumaty)
toss
500k
SooKH?
1s00KHE
cook
26 dB (IHF)
ASEkHz
465KH2
OUTPUT
MUTING
LEVEL
AD.
[any
re) r=) @-—_
mer] FM METER ADJ.
(input 2848)
Connect to FM antenna
terminal through FM
98MHz
F
dummy antenna.
(100% Mod.
98MHz
Connect VTVM
or scope to
Adjust so that output can
Output level of SG.
with 400Hz)
output terminal of set.
be obtained.
40dB (IHF)
NO ADJ.
T602
49kHz
WAVE
REC OUT
Q
SEPARATION
ADJ.
TP6O1
8) (19kH2
Output)
.
NO ADJ.
7601
|
112.59
|
19kH2 TRAP
ToSG
|
750
| To Tuner
Oo
(SG imp. 752)
|
LEVEL ADJ.
PHASE ADJ.
a
vr6o1
va6o2 |
[_vreos |
viet
K
LeveL ADs
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