– 23 –
WAVEFORM
IC301 PIN 19 (GOUT)
1 V/div
10 µs/div
IC301 PIN 23 (V NFB)
1 V/div
5 ms/div
IC301 PIN 24 (VOUT)
0.2 V/div
5 ms/div
IC301 PIN 26/27 (SCL/SDA)
Pin 26
Pin 27
2 V/div
5 ms/div
1
1
2
2
3
3
4
4
IC301 PIN 30 (FBP IN)
2 V/div
20 µs/div
IC301 PIN 32 (H OUT)
1 V/div
20 µs/div
IC301 PIN 47 (IF DET OUT)
1 V/div
20 µs/div
Q912 EMITTER
0.5 V/div
20 µs/div
5
5
6
6
7
7
8
8

MAIN C.B

AC : 220V INPUT : TUNER PAL-COLOR BAR AUDIO 1kHz USER CONTROL : ALL RESET