V. FREQUENCY CHECK
1.Select video 1 with no signal input.
2.Set the conditions for a standard setting.
3.Connect the frequency counter to
4.Check that V. Frequency shows 60 ± 4 Hz.
SUB CONTRAST ADJUSTMENT (RDRV)
1.Input a
2.Set the red color on (1).
3.Set in Service Adjustment Mode.
4.Select the item DCOL level to 0.
5.Set the conditions as follows:
PICTURE: MAX
COLOR: MIN
BRIGHT: | CENTER |
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R ON: | ON | (1) |
G ON: | OFF | (0) |
B ON: | OFF | (0) |
Mode | Display | 1: ON | ||
Item | ||||
0: OFF | ||||
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SERVICE | RON | 26 |
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6. Connect an oscilloscope probe to CN301 pin 2 (Red Out) and ground .
7.Select RDRV with 1 and 4 .
8.Adjust the value of RDRV with 3 and 6 for 1.50 ± 0.05 Vpp.
White
1.50 ± 0.05 Vpp
Black
9.Reset the item DCOL to 1.
10.Press MUTING then ENTER to save into the memory.
11.Return the following back to normal after adjustment.
PICTURE: | MAX |
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COLOR: | CENTER |
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BRIGHT: | CENTER |
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R ON: | ON | (1) |
G ON: | OFF | (1) |
B ON: | OFF | (1) |
DISPLAY POSITION ADJUSTMENT (DISP)
1.Input a
2.Set to Service Adjustment Mode.
3.Select DISP with 1 and 4 .
4.Adjust values of DISP with 3 and 6 to adjust characters to the center.
5.Write to memory by pressing MUTING then ENTER .
6.Check to see if the text is displayed on the screen.
Mode | Display | Item | |
Item | Data | ||
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SERVICE | DISP | 15 |
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SUB BRIGHT ADJUSTMENT (SBRT)
1.Input a crosshatch signal.
2.Set to Service Adjustment Mode.
3.Set the PICTURE and BRIGHTNESS to minimum.
4.Select the SBRT item with 1 and 4 .
5.Adjust the values of SBRT with 3 and 6 to obtain a faintly visible crosshatch.
6.Press MUTING then ENTER to save into the memory.
SUB HUE, SUB COLOR ADJUSTMENT (SHUE, SCOL)
1.Input a
2.Set to Service Adjustment Mode.
3.Connect a probe to TP47B
4.Measure white V1 and blue V4.
4.1) Increase SCOL Register +1 setp.
V1 | V2 | V3 | V4 |
STANDARD
V4 - V1 = ± 0.2Vpp V3 - V2 = ± 0.2Vpp
5. Press MUTING then ENTER to save into the memory.
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