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AVH-X1500DVD/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 (CN1952) via a buffer circuit.
CN1952
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 GNDV (stylus) being the reference. Set the trigger mode to “TV trigger” and
the trigger line to “150 line”.
No.
Check point 1 (stylus)
Specification value
Reference waveform
1
COMPOSITE
1000 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
Side A
Fig 11.3: VIDEO signal check point
IC1501
DVD_LSI
Video
DAC
section
COMPOSITE
GNDV2
Содержание AVH-X1500DVD/XNEW5
Страница 12: ...AVH X1500DVD XNUC 12 1 2 3 4 1 2 3 4 C D F A B E UW5 Type Backup current 5 mA or less ...
Страница 13: ...AVH X1500DVD XNUC 13 5 6 7 8 5 6 7 8 C D F A B E UW5 Type ...
Страница 25: ...AVH X1500DVD XNUC 25 5 6 7 8 5 6 7 8 C D F A B E ...
Страница 103: ...AVH X1500DVD XNUC 103 5 6 7 8 5 6 7 8 C D F A B E ...
Страница 104: ...AVH X1500DVD XNUC 104 1 2 3 4 1 2 3 4 C D F A B E 9 2 EXTERIOR 1 D E A A B B C C ID EW5 UW5 RI EW5 UW5 RI D D ...
Страница 106: ...AVH X1500DVD XNUC 106 1 2 3 4 1 2 3 4 C D F A B E 9 3 EXTERIOR 2 A B A A UC RC RD RI ID EW5 UW5 1 2 UC RC RD RI ID ...
Страница 110: ...AVH X1500DVD XNUC 110 1 2 3 4 1 2 3 4 C D F A B E 9 5 DVD MECHANISM MODULE 2 A GEM1045 B GEM1038 C GEM1024 C C C B A ...
Страница 111: ...AVH X1500DVD XNUC 111 5 6 7 8 5 6 7 8 C D F A B E ...