Chapter 8
Schematics and Waveforms
This chapter contains schematics, waveforms, and
component views for the ZCM-1490 color video
monitor. Where appropriate, test points are desig
nated on the schematics and component views by a
circled number that refers to a corresponding
waveform photograph.
Waveform Explanation
This chapter contains all waveform photographs re
ferred to throughout the manual. Figure 8-1 and the
notes that follow it explain the waveform display win
dow and oscilloscope settings. All waveforms were
taken with the external brightness and contrast con
trols set to their detent position. The fill screen test
with the capital Z was displayed.
riP
I
ill=~
!f1I
I
I."··
i
. . . . . . . .
I
1
"
~
-------1- -
i --- ---: --
F
10
or.
<.U.t.
~
®
Figure 8-1.
I
1
1
1
.......
1
1
1
I
.. .
. ·1
I
1
1
I
:
I
I
I
1
G
1
1
1
I·· .
1
~21
1
1
[22~I~
I
Q)C
CD@@
Oscilloscope Display Information