Description
Sanyo VTC-5350 Betacord (Betamax) VCR service manual (video circuit documentation).
- Video circuit block diagrams (Fig. 1-1 / 1-2): VP-1 pre-amp (LA7007) – head A/B equalizer amps, RF amp/switching, D.O.C. (Schmidt trigger, peak detector, limiter), Rec-Y / chroma level adjustments
- VD-1 luminance process (LA7005 / LA7000): AGC, FM modulate/demodulate, pre-/de-emphasis, noise cancel, Y/C mix, aperture/phase compensators, white/dark clip, sync separator, half-H shift, RF modulator / VIDEO OUT / test signal generator; SECAM detector and PAL/SECAM LED drive
- VD-2 chrominance process block diagrams (PAL APC REC and PAL AFC REC/PB modes) with CX-136A / CX-832 / CX-150 / MB14300 paths, 4.43 MHz BPF, 1H delay, ACC/ACK/carrier-balance/pilot-burst adjustments, and PAL/SECAM REC/PB switching
Pages: 35 · File size: 89.86 MB
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