AIWA TV-C143KER
Service Manual

IC, TA1275AZ Pin No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Pin Name
Y OUT MODE SW R-Y OUT R-Y BLACK CONTROL B-Y OUT B-Y BLACK CONTROL S-ID FILTER EXT R-Y IN 5V VCC EXT B-Y IN GND Fo-ADJ FILTER C IN BELL-ADJ FILTER Y IN BELL CONTROL S.C.P. IN 5V VCC 4.43MHz CW IN ID SW SECAM ID I/O

I/O
O O O I O I I I I I I I I I I I I I/O The output pin for Y signal.

Description

The pin for controlling the Y processing mode: to Vcc: 5.5MHz trap ; open: 5.5MHz trap + D.L ; to GND: DL. (not used) The output pin for demodulated R-Y signal. The pin for controlling the black offset level. (not used) The output pin for demodulated B-Y signal. The pin for controlling the black offset level. (not used) The pin for connecting the SECAM ident filter capacitor. The input pin for external R-Y signal. (not used) The Vcc pin for Y/C processing block. The input pin for external B-Y signal. (not used) The Gnd pin. The pin for connecting a capacitor for automatic adjusting circuit. The chroma signal input pin. The pin for connecting a capacitor for the bell filter fo, 4.286MHz. The Y signal input pin. The pin for selecting the bell filter fo. fo + 70KHz: open ; fo + 35KHz : 20k to GND ; fo: to GND.(Connected to Pin 18) The pin to input the sand castle pulse, SCP. Vcc pin for logic block. The pin for input 4.43MHz of carrier wave for self adjustment circuit. The switch pin for selecting the ID detection mode. (Connected to Pin 18) H + V: connected to Vcc ; Auto search: opened ; H: connected to GND. The interface pin to the main processor.

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