Aiwa TV-FA2500, Руководство по обслуживанию

Страница: 31 / 61

– 31 –
Pin No. Pin Name I/O Description
42 D-GND – GND of digital block.
43 SYNC-IN I Input of the synchronous separation circuit.
44 BLK-DET – The terminal to be connected with an Black Det filter.
45 C-IN I Input of chroma signals.
46 Y/C-VCC – VCC of Y/C circuit.
47 IF DET OUT O Composite video signal and SIF signal detected in IF circuit.
48 LOOP-FIL – Loop filter for IF PLL.
49 VCO-GND – GND of VCO and SIF circuit.
50 VCO – The terminal connected with a tank coil for IF VCO.
51 VCO – The terminal connected with a tank coil for IF VCO.
52 VCO-VCC – VCC of IF VCO and SIF.
53 SIF I SIF input.
54 RIPPLE – Connected with cap to stabilize the performance of SIF injection-lock circuit.
55 SIF/H-PIN O Output of 2nd SIF signal. (Not used)
56 FM-DC-NF I The terminal for FM DC negative feedback and AGC filter for L-SECAM.