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BLOCK DIAGRAM
Antenna
@ Ic200
Video
Sound } Det.
FM
AFT Circuit
AGC Circuit
Speaker
@ TU
Volume
Control
@
10400
Tuning
Voltage
Generator
®
1C300
Chroma
.
Circuit
©
D
Driver
tt
Driver
OSC
Display
Control
A/D Converter
Auto-tuning
Control
1C800,1C801
Display
Voltage.
Generator
Control
(2) - Video IF Amp. Q200 28C4238
Amplifies the video IF signal output from the tuner TU by 10 times (20dB).
()- Video, Sound, FM, AFT Det., AGC 1C200 M51348FP
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) - Audio Amp. IC600 TA7368F
Sound amplification.
() - Chroma Circuit 1C300 M51403FP
Generates the tricolor of red, green and blue from the video signal.
(@)- OSC, A/D Converter IC700 MSM6348GS-K
Converts the color signal into digital signal.
Also generates the clock pulse for the display, and controls the display.
@) —
Tuning Voltage Generator IC400 MSC1169MS-K
Generates the tuning voltage from the tuning pulse (TU) output of 6).
(8) —
Display Voltage Generator |C800 BA10358F, IC801
MSM6362MS-K
Generates the display voltages VO ~ V4 from VEE1 and VCC7 outputs of the power supply.
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