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Diagnostic Software Descriptions and Troubleshooting
5.4
Mono PCB Digital Part
5.4.1
Picture Test
The picture test is performed by putting a predefined picture
(colour bar) on the display (nucleus VideoColDencOn) and
asking the user for confirmation. The display will show the
following message:
Figure 5-17
By pressing PLAY the user confirms the test, pressing PAUSE
will indicate the picture was invisible or incorrect. Pressing
NEXT will proceed to the next test
5.4.2
Sound 1 & SCART DVD Test
The first soundtest is performed by starting a pink noise sound
that needs confirmation from the user (nucleus
AudioPinkNoiseOn); the display will show the following
message very shortly:
Figure 5-18
After starting up sound 1, SCART loop-trough will be
simultaneously active during this test. SCART loop-through will
be measured with the aid of an external video source.
When entering the SCART loop-through, the local display
indicates:
Figure 5-19
On the TV screen a colour bar (generated by nucleus
VideoColDencOn) is visual and the internally generated
pinknoise is audible. By pressing PLAY the user confirms the
test, pressing PAUSE will indicate the sound was inaudible or
incorrect. Pressing NEXT will proceed to the next test; if the
user presses NEXT without pressing PLAY or PAUSE first, the
result of this test will be TRUE (sound ok). By pressing the
NEXT button there will be switched over to the external source,
this must become now visible on the TV screen (using the
SCART). The local display indicates:
Figure 5-20
5.4.3
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SACD 900
The internally generated colour bar is still available on the
CVBS and Y/C outputs. And the pinknoise-signal is still
available on the cinch audio outputs. By pressing the NEXT
button, the internal generated colour bar becomes visual again.
The test can be left by pressing the NEXT key for more than
one second.
Sound 2 Test
The second soundtest is performed by producing a sine sound
(nucleus AudioSineOn). The signal can be stopped by pressing
the STOP-key. The display will show the following message:
Figure 5-21
After the audio signal has been stopped, by pressing PLAY the
user confirms the test, pressing PAUSE will indicate that
something went wrong. Pressing NEXT will proceed to the
next; if the user presses NEXT without pressing PLAY or
PAUSE first, the result of this test will be TRUE (sound ok).
5.
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