Adjustment; Signal Generator - Sharp Sa-200H Serviceanleitung

THE INSTRUCTION OF FREQUENCY ADJUSTMENT (SA-200H/HB)
In orderto complywith Pfg.Nr.478/1981,please fix the low endof dial frequency (87.5MHz) a ndthe highendof dial fre-
quency(108.0MHz) on FM band,by adjusting oscillation coil (L3)andoscillation trimmer(TC3),respectively, asillustratedin
Figure 12-2.
MW IF/RF ALIGNMENT
• Set the band selector switch at MW position.

SIGNAL GENERATOR

TEST
STEP
STAGE
CONNECTION
Refer to
Figure 6—1.
1 (Reduce the in-
put as low as
possible.)
2 Same as step 1.
Band
coverage
3 Same as step 1.
4
Same as step I.
Track i ng
5 Same as step I.
6 Repeat steps 2, 3, 4 and 5 until no further
LW RF ALIGNMENT
e Set the band selector switch at LW position.
TEST SIGNAL
STEP
STAGE
CONNECTION
Refer to
Figure 6—1.
(Reduce the in-
put as low as
Band possible)
coverage
2
Same as step I.
3 Same as step 1 .
Tracking
4 Same as step 1.
5 Repeat Steps 2, 3 and 4 until no further improvement can be made.

ADJUSTMENT

DIAL POINTER
SETTING
FREQUENCY
455kHz
Low end
(400Hz, 30%,
of dial.
AM modulated)
SUK... 465kHz
513kHz
Low
(400Hz, 30%,
of dial
AM modulated)
1650kHz
High end
(400Hz, 30%,
of dial.
AM modulated)
600kHz
(400 Hz, 30%,
600kHz.
AM modulated)
1400kHz
(400Hz, 30%,
1400k Hz.
AM modulated)
improvement can be made.
GENERATOR
DIAL POI NTER
SETTING
FREQUENCY
144kHz
Low
(400Hz, 30%
of dial.
AM modulated)
380kHz
High end
(400 Hz, 30%,
of dial.
AM modu lated)
170kHz
(400 Hz, 30%,
170kHZ
AM modulated)
340kHz
(400Hz, 30%,
340kHz
(AM modulated)
AM Signalgenerator Loop antenna
AM
Bar
o
Figure 6—
1 AM
OF TUNER CIRCUIT
METER
ADJUSTMENT
CONNECTION
Refer to
IF Transformer
Figure 6—1. T60.
Same as step I.
end
Oscillation
L64.
Same as step I. Oscillation
tr immer
AM
Same as step I. bar antenna
coil
Antenna
Same as step I.
tr im mer
METER
ADJUSTMENT
CONNECTION
end Refer to
Oscillation
Figure 6—1.
coil
Oscillation
Same as step I .
trimmer
AM
antenna
Same as step I .
L61. (LW)
LW antenna
Same as step 1.
trimmer
TC61.
tenna TP70
Set
1-60, 61
Ground
ALIGNMENT
REMAR
Turn the core of T60
waveform is maximal
in Fig. 9—3.
Repeat this twice or three times
to obtain best result.
coil
Adjust for maximal
Same as step 2.
TC63.
Same as step 2.
1.60. (MW)
Same as step 2.
TC60.
REMARKS
Adjust for maximal
1.65.
Same as step I .
Repeat this twice
TC64.
to obtain best result.
bar
coil Same as step i.
Same as step 1
Repeat this twice or three times
to obtain best result.
Oscilloscope
o
KS
until IF
as shown
output.
output
or three times