BLOCK DIAGRAM
Antenna
3IC200
1TU20024Q200IC600Speaker
Video
VR600
Sound Det.
Audio
TunerIF Amp.FM
Amp.
AFT CircuitVolume
AGC CircuitControl
7IC501
5IC300
Tuning
Voltage
Chroma
GeneratorLCD
Circuit
6 IC400
Display
Control
Auto-Tuning
Control
VCC2 (5.0 ? 0.02 V)
VCC7 (28.8 ? 2.9 V)
Power
VCC6 (9.1 ? 0.5 V)
Supply
VEE1 (�20.0 ? 2.0 V)
VEE2 (�8.1 ? 0.8 V)
1 N Color tuner: TU200 TEPU5-02
Selects a desired radio wave and changes it to the video IF signal.
2 N Video IF amp.: Q200 2SC4238
Amplifies the video IF signal output from tuner TU200 by 10 times (20 dB).
3 N Video det./Sound det./FM det./AFT/AGC: IC200 M51348AVP
Eliminates the carrier wave in the video IF signal, and picks up the video signal and the sound IF signal.
Also, the sound signal is picked up from the sound IF signal by FM detection.
4 N Audio amp.: IC600 NJM2070M
Sound amplification.
5 N Chroma circuit: IC300 IR3P90Y
Generates the tricolor (red, green, and blue) from the video signal.
6 N Display control/Auto-tuning control: IC400 LZ93BA5
Controls the display.
7 N Tuning voltage generator: IC501 BA10358F
Generates the tuning voltage with the tuning pulse output from 6.
N 3 N |