70GS-66E
" When the volume down button is pressed the top and bottom scanning increases and the
centre scanning decreases.
" Press the stand-by button on the remote control to store.
Vertical Shift
Adjust the Vertical Shift so that the picture is centred.
The effect of this adjustment is shown in figure 13.
" When the volume up button is pressed, the picture moves up.
" When the volume down button is pressed, the picture moves down.
" Press the stand-by button on the remote control to store.
Fig.13
Extreme Corner Correction
Adjust the Extreme Corner Correction so that the picture is centred.
The effect of this adjustment is shown in figure 14.
" When the volume up button is pressed, side pincushion changes from pincushion to
barrel shape.
" When the volume down button is pressed, side pincushion changes from barrel shape to
pincushion.
Fig.14
" Press the stand-by button on the remote control to store.
Colour Adjustments2.4 Position colorimeter in the centre of screen.
2.5 Adjust brightness and contrast to obtain a lumi-
The following adjustments should only be carried out whennance of H20 NITS.
the CRT or IC1801 are replaced.2.6 Operate in Service Mode and select location RED
CUT OFF, GREEN CUT OFF and BLUE CUT
OFF, to obtain colour coordinates:
G2 and Cut Off Adjustments
1. Follow the procedure below to set the G2
1.1 Tune the set to the output of a signal generatorTo increase press volume-up button and to decrease press
(cross hatch pattern).volume down button.
1.2 In the user menu, set contrast to 80/100 and
brightness to 40/100.RED CUT OFF alter ?X? coordinate.
1.3 Connect the oscilloscope to the red cathode andGREEN CUT OFF alter ?Y? coordinate.
adjust G2 to read 135V on the sensor pulse asBLUE CUT OFF alter ?X? and ?Y? coordinate.
in the drawing:
135 VChanging NVM Data
To change the data contained within the Non Volatile
Memory, it is necessary to first select the page the data is
stored in, then the position and finally to change the data
CH1 gnditself. The procedure below outlines this process.
1. While on ALTER NVM PAGE, use the volume up/down
NOTE:buttons to change this data (data is shown in hexadecimal
Oscilloscope should be adjusted for vertical TV field triggerformat).
and synchronized with video signal.2. Press the channel up button and ALTER NVM POSITION
appears, use the volume up/down buttons to change this
data (data is shown in hexadecimal format).
2. Follow the procedure below to set the Cut Off.3. Press the channel up button and ALTER NVM VALUE
2.1 Adjust G2.appears, use the volume up/down buttons to change this
2.2 Tune a white pattern.data (data is shown in hexadecimal format).
2.3 Adjust colour to minimum.
X=0.290 ? 0.015 Y=0.300 ? 0.015
8 |
ACEC
SHARP
