Daewoo DVT-14/20H1(T)D User Manual

 1) Set a Pattern Generator with RF level 62 6 2 dBuV, 210.25 MHz.
 2) Connect a OSCILLOSCOPE PROBE to P101 ( TUNER AGC INPUT ).
 3) Adjust AGC UP/DOWN KEY the voltage drop about 1V DC over below  it's maximum voltage.

 

1) Apply a COLOR BAR PATTERN SIGNAL.
 2) Press the "SCREEN" KEY .
3) Connect a OSCILLOSCOPE PROBE to P901 ( CRT CATHODE R,G,B )

 4) Adjust the screen volume on FBT such that the highest black level voltage 120V6 5Vdc . 

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Another methode

 

1) Press "AV Key" in condition of AV no signal.

 

2) Press the "SCREEN" KEY .

 

3) Connect a OSCILLOSCOPE PROBE to P901 ( CRT CATHODE R,G,B )
4) Adjust the screen volume on FBT such that the highest black level voltage  140 V6 5Vdc .

 

1) Apply a COLOR BAR PATTERN SIGNAL.
 2) Adjust the R,G,B UP/DOWN KEY of the other color which did not appear on the screen to obtain WHITE.

 1) Apply a RETMA PATTERN SIGNAL.
 2) Adjust the FOCUS VOLUME on FBT to obtain optimal resolution.

5.1  S-CORRECTION
 1) Apply a CROSSHATCH PATTERN SIGNAL.
 2) Adjust the S-CORR UP/DOWN KEY obtain  the same distance between horizontal lines.
5.2  VERTICAL SLOPE
 1) Apply a RETMA PATTERN SIGNAL.
 2) Pressing the V-SLOPE +/-  KEY,the  lower half of the screen is blanked.
 3) Adjust the border line of blanked picture coincident with the center marks of the  pattern 
     using the V-SLOPE +/- KEY.
5.3 VERTICAL CENTER
 1) Apply a RETMA PATTERN SIGNAL.
 2) Adjust the center line of pattern coincident   with the mechanical center marks of the 
     CRT using the V-CENTER  +/- KEY.
5.4 VERTICAL SIZE

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  The V-CENTER adjustment has to be  done in advance.

 1) Apply a RETMA PATTERN SIGNAL.
 2) Adjust the upperside of the pattern coincident    with the mechanical center marks of 
     the CRT using the V-SIZE  +/- KEY.