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[Focus Circuit]
8.
Lens Focus
Measuring
instrument
EXT trigger
Measurement
range
Input signal
input terminal | VIDEO IN terminal
[Focus Circuit]
9. Electrostati
Measuring
instrument
Test point
EXT trigger
Measurement
range
Input signal
Input terminal | VIDEO IN terminal
Symptom when
Adjustment purpose
The best resolution of the picture.
Blurred picture.
incorrectly adjusted
VIDEO signal
(monoscope)
ic Focus
Symptom when
* This adjustment must follow adjustment 9 (Electrostatic Focus).
* Perform this adjustment for RED, GREEN and BLUE monochrome pictures.
1. Supply a VIDEO signal (monoscope).
2. Produce a monochrome picture.
1). Press the "MENU" button on a remote hand unit.
2). Press the buttons "2", "3", "5", "Q" and press the button specified in the
table below to select each color.
3. Adjust the position of lens, for the best picture resolution.
Note: Attach a white paper to the screen center. During the adjustment, observe
the picture on the screen from inside for easier adjustment.
4. Display the original picture. (Press. "MENU" twice)
Monochrome
Remote Hand
Picture
Unit Button
eee [eee Ta
eee
GREEN
BLUE
Adjustment purpose _ For best resolution of the picture.
Out of focus picture.
incorrectly adjusted
VIDEO signal
(monoscope)
Focus Pack
(FOCUS control)
FRONT VIEW
* This adjustment must follow adjustment 10 (Sub Cont).
* If you replace the CRT, this adjustment must follow adjustment 8 (Lens Focus).
* Perform this adjustment respectively for RED, GREEN and BLUE monochrome
pictures.
1. Supply a VIDEO signal (monoscope).
2. Press the "A/V RESET" button in the control panel to reset the all VIDEO
FUNCTIONS.
3. Produce a monochrome picture.
1). Press the "MENU" button on a remote hand unit.
2). Press the buttons "2", "3", "5", "9" and press the button specified in the
table below to select each color.
4. Adjust the FOCUS control on the focus pack so the sharpness of the upper
area of the screen is optimum.
5. Display the original picture. (Press "MENU" twice)
Picture
Unit Button
—25-
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