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AVIC-X930BT/XNUC
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Check 11: Is the video circuit OK?
<Outline> Composite signal and component signal are output from DVD-LSI (IC1501), and are output from the
HOST I/F (CN1901) via a buffer circuit.
CN1901
HOST I/F
Composite
COMPOSITE
Fig 11.1: Video circuit
<Checking method> Playback DVD-REF-A1 TITLE2 CHAPTER5 (WHITE 100%), and monitor COMPOSITE signal with
an oscilloscope with GNDV1 (stylus) being the reference. Set the trigger mode to “TV trigger” and
the trigger line to “150 line”.
IC1501
DVD_LSI
Video
DAC
section
NO.
Check point 1 (stylus)
Specification value
Reference waveform
1
COMPOSITE
1 000 mVpp ± 5 %
Waveform 6
In case of NG, check the applicable line, the periphery of the major components in the drawing above, soldering of the
peripheral components and defective components.
PEAK
COMPOSITE signal
Reference
value
Color burst
Pedestal level
BOTTOM
Horizontal sync signal
Fig 11.2: Waveform for the case of composite white 100% output
Summary of Contents for AVIC-F930BT
Page 27: ...AVIC X930BT XNUC 27 5 6 7 8 5 6 7 8 C D F A B E ...
Page 80: ...AVIC X930BT XNUC 80 1 2 3 4 1 2 3 4 C D F A B E Side A SCLOCK SDATA D CP_RESET D DGND2 ...
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