Service manual

ELECTRICAL ADJUSTMENTS
D2-4
2-16: SUB BRIGHTNESS
1.
2.
3.
4.
5.
6.
7.
Receive the black pattern*. (RF Input)
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-7 appears on the display.
Press the channel button (1) on the remote control to
select "BRIGHT".
Press the VOL. UP/DOWN button on the remote control
until the screen begin to shine.
Receive the black pattern*. (Audio Video Input)
Press the TV/VCR button on the remote control to set to
the AV mode. Then perform the above adjustments 2~5.
*The Black Pattern means the whole black raster signal.
Select the "RASTER" of the pattern generator, set to
the OFF position for each R, G and B.
1. BRIGHT
2. CONTRAST
3. COLOUR
4. TINT
5. SHARPNESS
6. TEXT CONT
7.
8. 0. RETURN
Fig. 2-7
2-17: SUB CONTRAST
1.
2.
3.
4.
5.
6.
7.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-7 appears on the display.
Press the channel button (2) on the remote control to
select "CONTRAST".
Press the PLAY or STOP button on the remote control
until the contrast step No. becomes "88"
Press the AV button on the remote control to set to the
AV mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-7 appears on the display.
Press the channel button (2) on the remote control to
select "CONTRAST".
Press the PLAY or STOP button on the remote control
until the contrast step No. becomes "96"
2-18: SUB COLOR
1.
2.
3.
4.
5.
6.
7.
8.
9.
Receive the color bar pattern. (RF Input)
Using the remote control, set the brightness, contrast
and color to normal position.
Connect the synchro scope to TP804.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-7 appears on the display.
Press the channel button (3) on the remote control to
select "COLOR".
Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set to 5 scales on the screen of the oscilloscope.
Press the PLAY or STOP button on the remote control
until the red color level is adjusted to 90% of the white
level. (Refer to Fig. 2-8)
Receive the color bar pattern. (Audio Video Input)
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~7.
0%
90%
Fig. 2-8
100%
Red Level
2-19: SUB SHARPNESS
1.
2.
3.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-7 appears on the display.
Press the channel button (5) on the remote control to
select "SHARPNESS".
Check if the step No. of SHARPNESS is "24".
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 1~3.
2-20: TEXT CONTRAST
1.
2.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-7 appears on the display.
Press the channel button (6) on the remote control to
select "TEXT CONT".
Press the PLAY or STOP button on the remote control
until the bar step is set to "0".