ELECTRICAL ADJUSTMENTS
D3-2
2-3: VCO FREERUN
1.
2.
3.
4.
Place the set with Aging Test for more than 10 minutes.
Connect the digital voltmeter between the pin 7 of
CP602 and the pin 1 (GND) of CP602.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select "VIF VCO".
Press the VOL. UP/DOWN button on the remote control
until the digital voltmeter is 2.5
±
0.5V.
(TV SECTION)
Receive the black pattern*. (RF Input)
Using the remote control, set the brightness, contranst,
color and tint to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (13) on the remote control to
select "BRIGHTNESS".
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 INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustment 2~4.
1.
2.
3.
4.
5.
6.
2-8: SUB BRIGHTNESS
2-5: CUT OFF
1.
2.
3.
4.
5.
Adjust the unit to the following settings.
R.DRIVE=64, B.DRIVE=64, R.CUT OFF=128, G.CUT
OFF=128, B.CUT OFF=128, SUB BRIGHT=128, SUB
CONTRAST=96.
Place the set with Aging Test for more than 15 minutes.
Set condition is AV MODE without signal.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (01) on the remote control to
select "CUT OFF".
Adjust the Screen Volume until a dim raster is obtained.
2-4: CONSTANT VOLTAGE
1.
2.
3.
4.
5.
6.
Input DC12V to DC Jack and turn the Power ON.
Connect the digital voltmeter to the F502 and GND.
Set condition is AV MODE without signal.
Adjust the VR501 until the DC voltage is 101
±
0.5V.
Input AC120V to AC cord and remove the DC Jack
cord. Check if the Power is ON before doing the above
procedure.
Adjust the VR502 until the AC voltage is 102
±
0.5V.
2-6: FOCUS
1.
2.
3.
Receive the monoscope pattern.
Turn the Focus Volume fully counterclockwise once.
Adjust the Focus Volume until picture is distinct.
Receive the color bar pattern. (RF Input)
Connect the oscilloscope to TP803.
Using the remote control, set the brightness, contranst,
color and tint to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (16) on the remote control to
select "TINT".
Press the VOL. UP/DOWN button on the remote control
until the section "A" becomes a straight line.
(Refer to Fig. 2-2.)
Receive the color bar pattern. (Audio Video Input)
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~5.
2-9: SUB TINT
1.
2.
3.
4.
5.
6.
7.
Fig. 2-2
"A"
2-7: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1.
2.
3.
4.
5.
6.
7.
Place the set with Aging Test for more than 15 minutes.
Receive the gray scale pattern from the Pattern
Generator.
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 (10) on the remote control to
select "R CUT OFF".
Press the CH. UP/DOWN button on the remote control
to select the "R CUT OFF", "G CUT OFF", "B CUT
OFF", "R DRIVE" or "G DRIVE".
Adjust the VOL. UP/DOWN button on the remote control
to whiten the R CUT OFF, G CUT OFF, B CUT OFF, R
DRIVE, and G DRIVE at each step tone sections equally.
Perform the above adjustments 5 and 6 until the white
color is looked like a white.
*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.
