Revox B261 Serviceanleitung Seite 42

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8261 SA
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4/1
ALIGNMENT INSTRUCTIO}IS
8261
TUNER
Required test equipment (for all adjustments)
- Digital
voltmeter
- FM
standard-signal
generator
- Stereo modulator
- Generator 30 Hz ...
200 kHz, Ri 50
ohms
- AF voltmeter
(up to 200
kHz)
- Frequency counter
- Oscilloscope with externally triggerable
probe 10:1
- RF
voltmeter
Programming
the required receiving
frequencies
Twelve station selector
keys should be
programmed
for the
following receiving
frequencies before starting with the
adjustments:
- Station key
1
- Station key
2
- Station key
3
- Station key
4
- Station key
5
- Station key
11
- Station key
12
- Station key
13
- Station key
14
- Station key
15
- Station key
16
- Station key
17
The fol-Iowing instructions refer to these statj-on selector
keys.
4.I
POWER
SUPPLY
I.126.720
4.I.1 Adjusting the +33 V supply voltage
Required test equipment
:
- Digital voltmeter
Switch tuner on and measure the voltage against ground on the
card edge connector (or on the corresponding printed
conductor
of the master board):
+33 V +0.5 V Adjustable on
R24
with an insulated
screwdriver
87.5
MHz
90.0
MHz
98.0
MHz
106.0
MHz
108.0
MHz
91
.9
MHz
97.925
MHz
97.95
MHz
98.0
tqllz
98.05
MHz
98.075
MHz
98.1
MHz
Pin I