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PCS 97 072 GB
VIDE-VO0699 / DRUCK 6
8.
2.1
3.1
Electrical
& mechanical adjustments
General
3.2
¢
All controls in the minimum position unless otherwise
specified.
¢
Test signal: From pattern generator (PM 5544, circle),
applied via capacitor of 4.7nF for DC blocking.
¢
The monitor should be warmed up for about
2 minutes.
Power supply
4.1
Adjustments of the +24V Volt
¢
Connect a DC voltmeter to TP +24V
¢
Switch on the monitor.
¢
Adjust potentiometer 3117 so the voltage reads
24,2 Volt DC (+ 0,2 Volt)
Time base
Frame amplitude
¢
Apply a "Circle" with a pattern generator on Video-
in-VCR and switch to VCR.
¢
Set al controls in the middle position.
¢
Adjust potentiometer 3413 until the vertical size of the
circle is the same size as in horizontal direction.
7110
Picture geometry
¢
Rotate the deflection coil around the neck of the
picture tube until the sides of the picture are in
parallel with the mask.
¢
Adjust the centring magnets until the picture is
symmetrical relative to the mask.
Carrier wave for intercom functions
Carrier wave adjustment
¢
Connect a frequency counter via a capacitor of 1 pF
to the emitter of 7800.
*
Tune the core of the coil 5810, while pressing the talk
button, until the frequency counter measures
6.200.000 Hz + 5 kHz.
3117
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