Mono set
Video Signal Processing
The processing circuits listed above are all integrated in the UOC TV processor. The surrounding components are for the
adaptation of the selected application. The I2C bus is for defining and controlling the signals.
RF signal processing
The incoming RF signal goes to the tuner (pos. 1000), where the 45.75 MHz IF signal is developed and amplified. The IF
signals then exits the tuner from pin 11 to pass through the SAW filters (pos. 1002). The shaped signal is then applied to the
IF processor part of the UOC (pos. 7200).
Tuner AGC (Automatic Gain Control) will reduce the tuner gain and thus the tuner output voltage when receiving strong RF
signals. Adjust the AGC takeover point via the Service Alignment Mode (SAM). The tuner AGC starts working when the
video-IF input reaches a certain input level. Adjust this level via the I2C bus. The tuner AGC signal goes to the tuner (pin 1)
via the open collector output (pin 22) of the UOC.
The IC also generates an Automatic Frequency Control (AFC) signal that goes to the tuning system via the I2C bus, to
provide frequency correction when needed. The demodulated composite video signal is available at pin 38 and then buffered
by transistor 7201.
Содержание 7603 series
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Страница 16: ...Schematic notes ...
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Страница 55: ...Circuit Description Block Diagram ...
Страница 56: ...Test point overview Main Panel Test point overview CRT Panel ...
Страница 68: ...Power Supply Figure 1 ...
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Страница 91: ...24M8 7603 ...
Страница 92: ...24M8 7603 ...
Страница 93: ...24M8 7603 ...
Страница 94: ...24M8 7603 ...
Страница 95: ...All Models 7603 Chassis Overview ...
Страница 96: ...All Models 7603 Power Supply Diagram A1 ...
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 ...
Страница 105: ...All Models 7603 Audio Video Source Switching Diagram A10 ...
Страница 106: ...All Models 7603 BTSC NDBX Stereo Decoder Diagram A11 ...
Страница 107: ...All Models 7603 Front I O Control Headphone Diagram A12 ...
Страница 108: ...All Models 7603 Rear I O Cinch Diagram A13 ...
Страница 109: ...All Models 7603 PIP Interface Diagram A16 ...
Страница 110: ...All Models 7603 CRT Panel Diagram B1 ...
Страница 111: ...All Models 7603 Side AV Headphone Panel Diagram C ...
Страница 112: ...All Models 7603 Side AV Headphone Panel Diagram E1 ...
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 ...
Страница 116: ...All Models 7603 PCB Large Signal panel component side ...
Страница 117: ...All Models 7603 PCB Large Signal panel copper side ...
Страница 118: ...All Models 7603 PCB CRT panel component side ...
Страница 119: ...All Models 7603 PCB CRT panel copper side ...
Страница 120: ...All Models 7603 PCB Side AV Panel component side ...
Страница 121: ...All Models 7603 PCB Side AV Headphone Panel component side ...
Страница 122: ...All Models 7603 PCB PIP Panel component side ...
Страница 123: ...All Models 7603 PCB PIP panel copper side ...
Страница 124: ...All Models 7603 PCB Top control round component side ...
Страница 125: ...All Models 7603 PCB Top control round copper side ...
Страница 126: ...All Models 7603 PCB Top control oval component side ...
Страница 127: ...All Models 7603 PCB Top control oval copper side ...
Страница 128: ...MAIN CABINET EXPLODED VIEW ...