Derived Voltages
The voltages supplied by the secondary windings of T5520 are:
•
'MainAux' for the audio circuit (voltage depends on set execution, see table below),
•
3.3 V and 3.9 V for the microprocessor and
•
'MainSupply' for the horizontal output (voltage depends on set execution, see table below).
Other supply voltages are provided by the LOT. It su50 V (only for large screen sets), +13 V, +8 V, +5 V and a +200
V source for the video drive. The secondary voltages of the LOT are monitored by the 'EHTinformation' lines. These lines
are fed to the video processor part of the UOC IC 7200
on pins 11 and 34.
This circuit will shut 'off' the horizontal drive in case of over- voltage or excessive beam current.
Figure 3
Содержание 7603 series
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Страница 97: ...All Models 7603 Line Deflection Diagram A2 ...
Страница 98: ...All Models 7603 Frame Deflection Diagram A3 ...
Страница 99: ...All Models 7603 Tuner IF Diagram A4 ...
Страница 100: ...All Models 7603 Video IF And Sound IF Diagram A5 ...
Страница 101: ...All Models 7603 Synchronization Diagram A6 ...
Страница 102: ...All Models 7603 Control Diagram A7 ...
Страница 103: ...All Models 7603 Audio Amplifier Diagram A8 ...
Страница 104: ...All Models 7603 BTSC Stereo SAP Decoder Diagram A9 ...
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Страница 113: ...All Models 7603 PIP Panel Diagram P ...
Страница 114: ...All Models 7603 Top Control Panel Diagram T ...
Страница 115: ...All Models 7603 SCAVEM Diagram B2 ...
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Страница 124: ...All Models 7603 PCB Top control round component side ...
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Страница 128: ...MAIN CABINET EXPLODED VIEW ...