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technote.008
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1997-04-16
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1KB
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36 lines
Technical Note: TN008
Date: 17 April 1986
Re: STM UHF Modulator Adjustment
The UHF TV output may not appear central on some TV sets, slight
modulator adjustment should correct inconsistent positioning.
Proceed as follows:-
1. Only Qualified service personnel should attempt to carry
out the following procedure on the 520STFM and 1040STFM
as mains voltage exists within these models.
2. Remove plastic cover and R.F. shield
3. Remove modulator shield
4. Apply power and adjust the plastic cross head screw on
the modulator PCB until the display is central.
5. Replace shields and all screws.
As well as producing a modulated output, the STM also provides an
un-modulated composite colour output on pin 2 of its 13-pin Din
socket which connects to pin 20 of the Atari Scart Connector.
-END-