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Block Diagrams
9. Block Diagrams
9-1 C15A Video Block Diagram
9-1-1 Notes
The TV�s 1st and 2nd tuners (and VCR module) are �multi-system.� compatible: IC201 (TDA8842/8841) is the video, chroma, and deflection (VCD) IC .
9-1-1(A) TAPE PLAYBACK (REGARDLESS OF ORIGINAL RECORDING SYSTEM)
If the output PB signal of micom pin 6 is high, the PB signal outputs from module deck 2, passes through IC 702 pins 2 and 3 and out to another VCR . The output signal of IC701 pin 1 (pin 15) outputs from IC201 pin 17 .
9-1-1(B) VIEWING NORMAL CHANNEL WHILE RECORDING A SCRAMBLED CHANNEL:
The output CVBS (Composite Video Signal) of the 2nd IF outputs to IC702pin 3 when the micom�s pin 7 V/T/H (VCR tuner high) is high . The decoded signal goes to IC701 pin 2, where it is fed to IC 701 pin 4 (high output of micom�s� pin 8� AV/Tuner), and out to VCR pin 4 (module deck) for recording.
9-1-1(C) VIEWING A SCRAMBLED CHANNEL WHILE RECORDING AN UNSCRAMBLED CHANNEL.
The output CVBS of the 2nd IF is fed from IC701 pin 5 to IC701 pin 4 (low output of micom pin 8�AV/tuner). Then it goes to the module deck pin 4 for recording. The scrambled signal (CVBS) is fed to IC702 pin 1 through the 1st IF, and then to IC702 pin 3 (micom�s pin 7, V/T/H registers low). Then it goes to the decoder input. The descrambled signal goes to IC701 pins 2 and 15 (PH high output of micom�s pin 6), and then to IC201 pin 17, where it outputs as RGB.
9-1-1(D) SYNCHRONOUS RECORDING:
The viewer sees the signal from the 1st tuner , while the signal from the second tuner is recorded. Audio processing for the French system type is shown in the table.
Samsung Electronics
9-1
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