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GENERAL
ALIGNMENT
INSTRUCTION
AM
IF/RF ALIGNMENT
@
Set the signal generator to produce a signal of 400Hz, 30%,
AM modulated.
@ Set
the
Function
Selector
Switch
(SW501)
to
"AM"
position.
TEST | FRE- | DIAL |ADJUST-
STAGE|QUEN. |SETT-|
MENT | REMARKS
IF (As shown in Figure 10-1, make connection of instruments.)
Adjust for
best "IF"
curve
(HR/HS)| High
455kHz|end of;
11
(ER)
dial
T2
|
ex dual
|
AM
IF
RF (As shown in Figure 10-2, make connection of instruments.)
=|
| Low
510kHz/jend of
L2
Band
dial
cover-
Adjust for
maximum
output
1
kHz
TC1
Repeat steps 2,3,4 and 5 until no further improvement
can be made.
THE
INSTRUCTION
OF
FREQUENCY
ADJUSTMENT
(QT-19HR/HS Only)
In order to comply with FTZ rule: Nr. 478/1981, please fix
the low end of dial frequency (87.5MHz) and the high end of
dial frequency
(108MHz)
on FM band, by adjusting oscilla-
tion coils (L103) and oscillation trimmer (TC 103), respectively.
FM 'F/RF ALIGNMENT
@ Set
the
Function
Selector
Switch
(SW201)
to
'FM'
Position.
@
Set
the
signal
generator
to produce
a signal of 400Hz,
100%, FM modulated.
FRE-
| DIAL | AD-
QUEN-/|
SET- | JUST-
CY
| TING ; MENT
al
IF (As shown in Figure 10-3, make connection of instruments.)
|
107 | Hish |
Adjust for best
FM
IF
MHz
end of | 1101
"ITE" curve as
diat
shown in Fig.10-4.
+
Adjust for best
FM
ae
-
T102
"S" curve as
shown in Fig.10-5.
Repeat steps 1 and 2 until no further improvement
can be made.
RF (As shown in Figure 10-6, make connection of instruments.)
STEP | BAND
REMARKS
|
if
Low
|
FM
end of | £103
Band
]
dial
High
end of | TC103
Adjust for
dial
maximum
output
88
MHz
| -t92
|
108
EM
MHz
Repeat steps 4, 5, 6 and 7 until no further improvement
can be made.
iTC101
oscitcoscore "'F" curve
SWEEP
AM
GENERATOA
TEST LOOP
BAR ANTENNA
)
=
at
aa C)
2
|
about] |
10cm
GROUND
Figure 10—1
ELECTRONIC
SIGNAL
An
VOLTMETER
GENERATOR
TEST
LOOP
BAR ANTENNA
SPEAKER
JACK
Figure 10—2
10.7MHz
OSCILLOSCOPE
FM
SWEEP
GENERATOR
1C102
Spin or ia pin
+
Figure 10—3
VV
10. 7MHz
10 7MHz
Figure 10-4
Figure 10-5
ELECTRONIC
VOLTMETER
FM SIGNAL
GENERATOR
HEADPHONES
GND
Figure 10—6
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