Audionideo Sync Board Waveforms - Zenith ZVM-131 Service Manual

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Ref. DC
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Video 75 ohm
Input Connector
fComposrte signal
from the computer)
Connector D. Pin 3
Vertical Sync
(Composite input)
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Connector D. Pin 3
HorIzontal" Sync
('Composite input)
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Connector E. PIn f
RED Signar
(Composite Input)
Page 32
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W1
11
O.1VIDIV.
2mseclDIV.
Zero
Ref. DC
1V/DIV.
2msec/DIV.
Zero
Ref. DC
1V/DIV.
fOj.lsec/DIV.
Zero
Ref. DC
fV /DIV.
10j.lsec/DIV.
Connector E. Pin
RED Signal
eRGB input)
Zero
~DC
1 V IDIV.
10Msec1DIV.
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0=.....-
-t-+t+-t+-t+-~~++++I-
...... Z'ero
Connector D. Pin 5
Vertical Sync
fRGB input from computer)
Ref. DC
2VIDIV.
2mseclDW
~~~r+~##~~-~
Ref. DC
Figure 11
Connector D. Pin 6
Horizontal Sync
(RGB input)
2V IDIV •.
10usec/DIV.
AudioNideo Sync Board Waveforms
Servicing