Continued from preceding page.
Pin No.
Pin
LA75676V-S
Function
Outputs a video signal that includes the SIF carrier. A
resistor must be inserted between pin 10 and ground
10
Composit video output to acquire adequate drive capability.
R ≥ 560 Ω
Equivalent circuit
2kΩ
10
15pF
A13275
VCO tank circuit for video detection
11
VCO tank
See the separately provided coil specifications for
12
details on the tank circuit. This VCO is a vector
synthesis VCO circuit.
11
12
A13276
AFT output
This circuit includes a function that controls the AFT
voltage so that it naturally goes to the center voltage
13
AFT output
during weak field reception.
A 120 kΩ bleeder resistor is built in. Note that the
sensitivity can be lowered by attaching an external
resistor.
120kΩ
1kΩ 13
120kΩ
A13277
RF AGC output
This output controls the tuner RF AGC. The internal
14
RF AGC output
circuit includes both a 30 kΩ pull-up resistor and a
100 Ω protective resistor. Determine the value of the
to tuner
external bleeder resistor to match the specifications of
the tuner.
14
A13278
Continued on next page.
No. 6277-9/13