Panasonic tc-22lh1 technical guide Service Manual
NTSC Video Signal Path
Figure 12
The TC-22LH1 incorporates a single NTSC tuner located, on the B1 board for viewing
television broadcasts as depicted in Figure 12. It is also equipped with two auxiliary
NTSC Video inputs and two NTSC S-Video inputs. These video and audio signals
provide input to the AV switch IC3004 located on the H board. The video output signals
enter the DG board via connector H4/DG1.
Due to the limited capacity of IC3004, switching between the composite video inputs
and the luminance of the S-video inputs is accomplished by IC3000. The video outputs
of IC3004 are buffered and output to the DG board via the connector H4/DG1.
television broadcasts as depicted in Figure 12. It is also equipped with two auxiliary
NTSC Video inputs and two NTSC S-Video inputs. These video and audio signals
provide input to the AV switch IC3004 located on the H board. The video output signals
enter the DG board via connector H4/DG1.
Due to the limited capacity of IC3004, switching between the composite video inputs
and the luminance of the S-video inputs is accomplished by IC3000. The video outputs
of IC3004 are buffered and output to the DG board via the connector H4/DG1.
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