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"
XV-110ZM.
Adjustment method
Obtain minimum
peak
—- peak
|
value of waveform
by turning
R1547 and R1440.
Adjustment position
Adjustment condition
. The same as in white balance .
2. Connect CH2 of socilloscope to pin
(8) of B connector (B-OUT).
3. Reverse waveform of CH1, and add
CH1 and CH2 (ADD mode).
4. After
step
white
balance
adjustment Red and Blue, you may
—
have to performed
fine using
controls R1440 and R1547.
White balance adjustment
(Blue)
-] R1547:
Blue Drive
[]R1440:
Blue Bias
Inside sensor board
Connect
Q3005
base to GND,and
force DC fan to rotate at a high speed.
Connect a digital voltmeter to fan
supply terminal voltage position (I1).
If Q3005 base is connected to GND
high fan speed is obtained and low
speed if itis connected to Vcc + 12V.
Fan switching voltage
setting control
(R3039)
Set the voltage of (11) within
13V+0.1V
using
control
of
R3039.
1. Receive
"PAL
COLOUR
BAR"
signal.
2. Connect an ascilloscope as shown
below.
PAL chroma adjustment
[1 R803:
1H-delay amp.
control
LI T802:
1H-delay phase
control
L1T801:
CW phase control
To oscilloscope
_ Press the $2112 Video STANDARD
|
switch (Reset).
T802
Adjust the colour control so that
the colour
difference
signal
becomes 2.5Vp-p. See the above
figure.
. Receive "SECAM
COLOUR
BAR"
signal.
2. Connect the oscilloscope between
TP931 and GND.
Bell filter adjustment:
(7931)
R and Bto be at the same amplitude
W
W
RB
RB
Adjust T931 so that the red and
blue outputs
have the same
amplitude.
15
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