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5
ALIGNMENT INSTRUCTIONS
1. MAIN TUNER AGC
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.
2. SCREEN
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 120V
6
5Vdc .
∗
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 V
6
5Vdc .
3. WHITE BALANCE
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.
4. FOCUS
1) Apply a RETMA PATTERN SIGNAL.
2) Adjust the FOCUS VOLUME on FBT to obtain optimal resolution.
5. GEOMETRY
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
∗
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.