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File name FB795C_4.pdf

ADJUSTMENT GENERAL INFORMATION All adjustment are thoroughly checked and corrected when the monitor leaves the factory, but sometimes several adjustments may be required. Adjustment should be following procedure and after warming up for a minimum of 30 minutes. · Alignment appliances and tools. - IBM compatible PC. - Programmable Signal Generator. (eg. VG-819 made by Astrodesign Co.or equivalent) - EPROM or EEPROM with saved each mode data. - Alignment Adaptor and Software. - Digital Voltmeter. - White Balance Meter. - Luminance Meter. - High-voltage Meter. AUTOMATIC AND MANUAL DEGAUSSING The degaussing coil is mounted around the CDT so that automatic degaussing when turn on the monitor. But a monitor is moved or faced in a different direction, become poor color purity cause of CDT magnetized, then press (DEGAUSSING) on the OSD menu. 4. Adjustment for Factory Mode (Preset Mode). 1) Display cross hatch pattern at Mode 2. 2) Run alignment program for Flatron 795FT(plus), FB795C on the IBM compatible PC. 3) EEPROM ALL CLEAR Y(Yes) command. 4) DIST. ADJ. 5) COMMAND PRESET STARTY(Yes) command. 6) Adjust tilt as arrow keys to be the best condition. 7) DIST. ADJ. BALANCE command. 8) Adjust balance of pin balance, key balance, V S Linearity, V C Linearity, Top corner correction and Bottom corner correction as arrow keys to be the best condition. 9) DIST. ADJ. FOS. ADJ command. 10) Adjust H-SIZE as arrow keys to 310±2mm. 11) Adjust H-POSITION as arrow keys to center of the screen. 12) Adjust V-SIZE as arrow keys to 230±1mm. 13) Adjust V-POSITION as arrow keys to center of the screen. 14) Adjust S-PCC (Side-Pincushion) as arrow keys to be the best condition. 15) Adjust TRAPEZOID as arrow keys to be the best condition. 16) Adjust TILT as arrow keys to be the best condition 17) Display from Mode 1) to Mode 12). 18) PRESET EXIT Y (Yes) command. 5. Adjustment for White Balance and Luminance. 1) Set the White Balance Meter. 2) Press the (DEGAUSSING) on the OSD menu for demagnetization of the CDT. 3) Display color 0,0 pattern at Mode 8. 4) Set Brightness and Contrast to max position. 5) COLOR ADJ. BIAS ADJ. command of the alignment program. 6) Check whether blue color or not at R-BIAS and GBIAS to min position and B-BIAS to 130 (decimal) position at Sub-Bright Max. If it's not blue color, the monitor must repair. ADJUSTMENT PROCEDURE & METHOD - Install the cable for adjustment such as Figure 1and run the alignment program on the DOS for IBM compatible PC. 1. Adjustment for B+ Voltage. 1) Display cross hatch pattern at Mode 2. 2) Adjust C913 (+) voltage to 190±0.2V with VR901. 2. Adjustment for High-Voltage. 1) Display cross hatch pattern at Mode 2. 2) Adjust CDT Anode voltage to 26±0.2kV with VR701. 3. Adjustment for Horizontal Raster Center. 1) Display cross hatch pattern at Mode 2. 2) Adjust the raster should be center of the screen with SW701. - 17 - 7) Adjust Screen control on the FBT to 0.15±0.02FL of the raster luminance. 8) Adjust R-BIAS and G-B