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AG-520VDH
level A is 175 VDC±5 VDC.
8. Turn the SCREEN CONTROL on the Flyback Transformer
clockwise carefully and stop at the point where red or blue
is first observed.
9. In EVR adjustment mode, select the two colors not
observed in step 8 from the following control functions (R
CUT-OFF, G CUT-OFF, B CUT-OFF) and adjust so that the
horizontal line becomes white.
For example, if the horizontal line appeared red in step 8,
select and adjust the B CUT-OFF and G CUT-OFF (See
Note).
10. Supply a White Pattern Signal to the Video Input Jack.
11. Press DISPLAY key on the remote control again to return
for full frame scan.
12. Select G DRIVE and B DRIVE in EVR adjustment mode
and adjust so that the entire screen is white.
13. Confirm that the screen is tracking the White Pattern
properly. If NG, repeat the above steps 8, 9 and 12 until the
screen is properly tracking the White Pattern.
14. Select SUB BRIGHT in EVR adjustment mode and adjust
correctly.
Note:
Before pressing DISPLAY key on the remote control for
collapse scan, select the desired control function and move
the shaded area to the value.
Fig. E7-2
7.3.12. SUB BRIGHTNESS ADJUSTMENT
Note:
Perform this adjustment in a darkened room.
Purpose :
To set the optimum brightness level.
Symptom of
The picture is too white or too black.
Misadjustment :
Test Point :
----------
Adjustment :
SUB BRIGHT (EVR),
Specification :
Refer to descriptions below.
Input :
----------
Mode :
STOP
1. Do not input any signal to the unit.
2. Set INPUT SELECT item to LINE in SET UP TV menu to
display black screen.
3. Select SUB BRIGHT in EVR adjustment mode, and adjust
so that the black screen starts to turn gray (lighting only).
34
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