Main Board Component Location; Main Board Waveforms - Zenith ZVM-131 Service Manual

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aln Board Component Location
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Connector 0, Pin 2
Vertical Sync
(RGB input)
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Conn?ctor D, Pin 3
Horozonlal Sync
(RGB [npul)
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Conn ector E, Pin 6
RED Signal
(RGB input)
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Connector 3 03, Pin 4
APL Signal
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Zero
Zero
Ref. DC
0.5V/DIV.
2msec/DIV.
Ref. DC
O.2VIDIV.
10usecfDIV.
Zero
Ref. DC
2V IDIV
10J,lseciDIV.
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Zero
Ref. DC
2VIDIV.
1 OJ,lsec.,DIV.
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ector 303 p.
60VPP'
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Conne ctor 3G3, Pin 2
Base Drive
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Connect .. or 3G3, Pin 5
Video Output
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Connector 2A5, Pin
4
HED Signal
(RGS signal)
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. Figure 17
Main Board Waveforms
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Ref. DC
2VIDIV
10J,lseciDIV.
Zero
Ref. DC
O.fVIDIV.
fOJ,lsec/DIV
ZJlL.Q
Ref. DC
20VIDfV.
2msec/DIV.
-ZJlL.Q
Ref. DC
2V IDrV.
10useclDrV.
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Page 40
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Connec
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Conneclo
140 volls r 303, Pin 6
peak 10 peak
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Zero
Ref. DC
50V/DIV
fOJ,lseclI)IV.
Zero
Ref. DC
50VIDIV.
10J,lsecfDIV,
Servicing