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in a black and White Signal. The receiver should
Tune
have been operating at least 10 minutes before proceeding
with Pedestal Level Alignment.
STEP
1
Set the Brightness control to mid. positions.
Set the R-Drive, G-Drive and B-Drive controls to mid range.
2
Set the R, G and B Bias controls to minimum (fully CCW)
3
4
Connect oscilloscope to collector of red output transistor ((21001)
Connect a short clip lead between TP402 and TP403.
Adjust the Pedestal control (R436) to make the pedestal level be aligned with the pulse level (A) of the waveform drawn on an
6
oscilloscope.
Adjust the white balance in such manners as in page 4.
7
0
q
0 0
SUB-COLOR
PEDESTAL LEVEL ALIGNMENT
Connect AC
to power supply.
PROCEDURE
J-J-
( A )
Waveform "A"
PEDESTAL LEVEL
0
PEDESTAL
Figure 11. Pedestal Level Alignment
power
plug through the isolation transformer
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Troubleshooting
