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7-2
TUNER ADJUSTMENT TABLE ( ECO5 FM/MW- and FM/MWI/LW - versions with AM-frame aerial )
: Tunedto
| Adjust | Output | Scope/Voltmeter
VARICAP ALIGNMENT
FM
108MHz
87.5 - 108MHz
87.5MHz
8V +0.2V
4.3V +0.5V
MW
1700kHz
8V +0.2V
FM/AM-version, 10kHz grid
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530 - 1700kHz
530kHz
1.1V +0.4V
LW
279kHz
8V +0.2V
153 - 279kHz
153kHz
1.1V +0.4V
MW
.
1602kHz
BV +0.2V
FMMWILW- and FMMWeversion
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9kHz
grid
Bi sence
531kHz
1.1V 40.4V
FM RF
FM
108MHz
108MHz
87.5-108MHz
0 Poort
MAX
87.5MHz
87.5MHz
98MHz, 1mV
>
152kHz +1kHz *)
continuous wave
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i
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a
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Var
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100k:
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wi
connect pin 26 of | Var=3MV)
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:
IC 7101 (AM Osc.)
|
remark 2) 8
symmetric
with short wire to
AM AFC
ground (pin 4)
©
5114
+2mVDC
MW
continuous wave!
<>
0
mM
See
lL
=
mw *)
FM/MW/LW- and FM/MW-version
oe
<B>
1494kHz
( 9kHz grid)
531 - 1602kHz
558kHz
558kHz
Lw
198kHz
198kHz
>
MW
1500kHz
Abwasouts
1500kHz
g a
O R
' FM/AM-version, 10kHz grid
Var as low as
symmetric
530 - 1700kHz
560kHz
possible
560kHz
Use service test program. By selecting the TUNER TEST test frequencies will be stored as preset frequencies automatically.
ECOS5, 020995
if sensitivity of frequency counter is too low adjust to max. channel separation
(input signal: stereo left 90% + 9%, adjust output on right channel to minimum)
2) RC network serves for damping the IF-filter while adjusting the other one.
3) For AM RF adjustments the original frame antenna has to be used !
4) MW has to be aligned before LW.
| Repeat
CS 48 893
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