File name p13~15.pdfElectrical Adjustments 109P2 GS3 CM25 13
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0. General - Connect a "high-voltage voltmeter" between the high-
voltage connection of the picture tube and earth.
When carry-out the electrical settings in many cases a video - Turn on the power.
signal must be applied to the monitor. A computer with : - Set the EHT trimming potentiometer 3698 so that the "high-
voltage voltmeter" reads 25.0 kV +/- 0.2 kV .
- ATI GPT-1600 (4822 397 10065), Mach 64 (up to 107kHz)
- Turn off the power.
are used as the video signal source. The signal patterns are - Remove the "high-voltage voltmeter" from the picture tube.
selected from the "service test software" package, see user - Turn on the power again.
guide 4822 727 21046 (GPT-1600). 3. Monitor the following auxiliary voltages.
0.1 This monitor has 35 factory-preset modes as below SOURCE ACROSS C2362 + 8.0V +/- 0.5VDC.
. SOURCE ACROSS C2143 + 5.0V +/- 0.5VDC.
31.469 KHz/70.087 Hz, 640 X 350 81.250 KHz/65.000 Hz, 1600 X 1200
31.469 KHz/59.941 Hz, 640 X 480 83.640 KHz/59.999 Hz, 1792 X 1344 SOURCE ACROSS C2362 +12.0V+/- 0.5VDC.
31.468 KHz/70.084 Hz, 720 X 400 85.938 KHz/85.002 Hz, 1280 X 960 SOURCE ACROSS C2134 +15.0V +/- 1.0VDC.
37.5 KHz/75 Hz, 640 X 480 86.333 KHz/59.995 Hz, 1856X 1392 SOURCE ACROSS C2137 - 15.5V +/- 1.0VDC.
37.861 KHz/72.810 Hz, 640 X 480 87.500 KHz/70.000 Hz, 1600 X 1200 SOURCE ACROSS D6148"+" 6.3 V+/- 0.5VDC.
37.861 KHz/85.081 Hz, 640 X 350 90.000 KHz/60.000 Hz, 1920 X 1440
37.879 KHz/60.317 Hz, 800 X 600 91.146 KHz/85.024 Hz, 1280 X 1024 SOURCE ACROSS C2131 + 210.0V +/-1.5VDC.
37.927 KHz/85.039 Hz, 720 X 400 93.750 KHz/75.000Hz, 1600 X 1200 SOURCE ACROSS C2133 + 82.7 V +/-2.0VDC.
43.269 KHz/85.008 Hz, 640 X 480 106.250KHz/85.00 Hz, 1600 X 1200
46.875 KHz/75.000 Hz, 800 X 600 106.270KHz/74.997Hz, 1792 X 1344
48.077 KHz/72.188 Hz, 800 X 600
48.363 KHz/60.004Hz, 1024X 768 4. General conditions for alignment
49.722 KHz/74.546Hz, 832 X 624 4.1 During all alignments, supply a distortion free AC mains
50.628 KHz/100.10 Hz, 640 X 480
53.674 KHz/85.061 Hz, 800 X 600 voltage to set via an isolating transformer with low internal
56.476 KHz/70.069 Hz,1024X 768 |