ELECTRICAL ADJUSTMENTS
D3-2
2-4: CONSTANT VOLTAGE
(TV SECTION)
Receive the monoscope 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 (13) on the remote control to
select "BRIGHTNESS".
Press the VOL. UP/DOWN button on the remote control
until the white 10% starting to be visible.
Receive the monoscope pattern. (Audio Video Input)
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~4.
1.
2.
3.
4.
5.
6.
2-8: SUB BRIGHTNESS
1.
2.
3.
4.
5.
6.
Input DC12V to DC Jack and turn the Power ON.
Connect the digital voltmeter between the FH503 or
FH504 and the GND.
Set condition is AV MODE without signal.
Adjust the VR501 until the DC voltage is 134 ± 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 DC voltage is 135 ± 0.5V.
2-3: RF AGC
1.
2.
3.
4.
Receive a 63dB monoscope pattern.
Connect the digital voltmeter between the pin 5 of
CP602 and the pin 1 (GND) of CP602.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (02) on the remote control to
select "RF DELAY".
Press the VOL. UP/DOWN button on the remote control
until the digital voltmeter is 2.65 ± 0.05V.
2-5: CUT OFF
1.
2.
3.
4.
5.
Adjust the unit to the following settings.
R.DRIVE=64, B.DRIVE=64, R.BIAS=128, G.BIAS=128,
B.BIAS=128, SUB BRIGHT=128, SUB CONTRAST=100.
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.
2-9: HORIZONTAL PHASE
1.
2.
3.
Receive the monoscope pattern.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (05) on the remote control to
select "H PHASE".
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on right
and left becomes minimum.
2-10: VERTICAL SHIFT
1.
2.
3.
4.
5.
Receive the center cross signal 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 (07) on the remote control to
select "V SHIFT".
Check if the step No. V SHIFT is "0".
Adjust the VR402 until the horizontal line becomes fit to
the notch of the shadown mask.
2-11: VERTICAL SIZE
1.
2.
3.
4.
Receive the center cross signal from the Pattern
Generator.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (06) on the remote control to
select "V SIZE".
Press the VOL. UP/DOWN button on the remote control
until the rectangle on the center of the screen becomes
square.
Receive a broadcast and check if the pictrue is mormal.
2-12: SUB CONTRAST
1.
2.
3.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (14) on the remote control to
select "CONTRAST".
Press the VOL. UP/DOWN button on the remote
control until the contrast step No. becomes "100".
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 1, 2.
2-7: FOCUS
1.
2.
3.
Receive the monoscope pattern.
Turn the Focus Volume fully counterclockwise once.
Adjust the Focus Volume until picture is distinct.
2-6: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1.
2.
3.
4.
5.
6.
7.
8.
Place the set with Aging Test for more than 15 minutes.
Receive the white 100% signal 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.BIAS".
Using the VOL. UP/DOWN button on the remote control,
adjust the R.BIAS.
Press the CH. UP/DOWN button on the remote control to
select the "R.DRIVE", "B.DRIVE", "G.BIAS" or "B.BIAS".
Using the VOL. UP/DOWN button on the remote control,
adjust the R.DRIVE, B.DRIVE, G.BIAS or B.BIAS.
Perform the above adjustments 6 and 7 until the white
color is looked like a white.
Содержание MVT2137
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