File name p16_p20.pdf16 109B2 GS3 CM25 Electrical Instructions
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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 R3587 so that the
"high- voltage voltmeter" reads 26.5 KV +/- 0.5 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 - Remove the "high-voltage voltmeter" from the picture tube.
are selected from the "service test software" package, see - Turn on the power again.
user 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 C2152 + 190.0V +/- 1.0VDC.
640 x 350 37.9 kHz/85 Hz 1152 x 870 68.7 kHz/75 Hz SOURCE ACROSS C2154 + 79.0V +/- 1.0VDC.
640 x 400 31.5 kHz/70 Hz 1152 x 900 71.8 kHz/76 Hz SOURCE ACROSS C2156 - 6.3V +/- 0.3VDC.
640 x 480 31.5 kHz/60 Hz 1280 x 960 60.0 kHz/60 Hz SOURCE ACROSS C2160 + 13.5V +/- 0.5VDC.
640 x 480 37.9 kHz/72 Hz 1280 x 960 85.9 kHz/85 Hz
SOURCE ACROSS C2157 - 13.5V +/- 0.5VDC.
640 x 480 37.5 kHz/75 Hz 1280 x 1024 63.9 kHz/60Hz
640 x 480 43.3 kHz/85 Hz 1280 x 1024 79.9 kHz/75 Hz
640 x 480 50.6 kHz/100 Hz 1280 x 1024 91.1 kHz/85 Hz 4. General conditions for alignment
720 x 400 31.5 kHz/70 Hz 1600 x 1200 75.0 kHz/60 Hz
720 x 400 37.9 kHz/85 Hz 1600 x 1200 81.3 kHz/65 Hz 4.1 During all alignments, supply a distortion free AC mains
800 x 600 37.9 kHz/60 Hz 1600 x 1200 87.5 kHz/70 Hz voltage to set via an isolating transformer with low internal
800 x 600 48.1 kHz/72 Hz 1600 x 1200 93.8 kHz/75 Hz impedance.
800 x 600 46.9 kHz/75 Hz 1792 x 1344 83.6 kHz/60 Hz 4.2 Align in pre-warmed condition, at least 30 minutes warm-
800 x 600 53.7 kHz/85 Hz 1856 x 1392 86.3 kHz/60 Hz
up with nominal picture brightness.
800 x 600 63.9 kHz/100 Hz 1920 x 1440 90.0 kHz/60 Hz
4.3 Purity, geometry and subsequent alignments should be
832 x 624 49.7 kHz/75 Hz
1024 x 768 48.4 kHz/60 Hz |