Pioneer AVH-P3200BTXNUC Service Manual page 55

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Check 11: Is the video circuit OK?
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<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.
IC1501
DVD_LSI
Composite
Video
DAC
section
<Checking method> Playback DVD-REF-A1 TITLE2 CHAPTER5 (WHITE 100%), and monitor COMPOSITE signal with
Check point 1 (stylus)
NO.
1 COMPOSITE
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.
TE
L 13942296513
COMPOSITE signal
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Fig 11.1: Video circuit
an oscilloscope with GNDV1 (stylus) being the reference. Set the trigger mode to "TV trigger" and
the trigger line to "150 line".
Specification value
1 000 mVpp ± 5 %
Color burst
Pedestal level
Horizontal sync signal
Fig 11.2: Waveform for the case of composite white 100% output
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2 9
8
COMPOSITE
Reference waveform
Waveform 6
PEAK
Q Q
3 6 7 1 3 1 5
Reference
value
BOTTOM
co
.
AVH-P3200BT/XNUC
7
8
9 4 2 8
CN1901
HOST I/F
0 5 8 2 9 9 4 2 8
m
8
9 9
A
B
C
9 9
D
E
F
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