ViewSonic VA712B Service Manual - Page 29

5. Adjustment Procedure 5.1 ADJUSTMENT CONDITIONS AND PRECAUTIONS 1. Approximately 30 minutes should be allowed for warm up before proceeding. 2. Adjustments should be undertaken only on those necessary elements since most of them have been carefully preset at the factory. 3. ESD protection is needed before adjustment. 5.2 MAIN ADJUSTMENTS NO. FUNCTIONS 1. White Balance 2. Geometry DESIGNATION Function Key Function Key 5.3 ALIGNMENT PROCEDURES Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment. 1. Adjust of White Balance 1.)How to do the Chroma-7120 MEM .Channel setting AReference to Chroma 7120 user guide BUse " SC" key and " NEXT" key to modify xyY value and use "ID" key to modify the TEXT description Following is the procedure to do white-balance adjust 2.)Setting the color temp. You want AMEM.CHANNEL9 ( 9300 color): 9300 color temp. parameter is Wx = 0.283 0.02;Wy = 0.298 0.02; Y > 190 cd/m2 , BMEM.CHANNEL10 ( 6500 color): 6500 color temp. parameter is Wx = 0.3130.02;Wy = 0.329 0.02; Y > 260 cd/m2, CMEM.CHANNEL 11 ( 5400 color): 5400 color temp. parameter is Wx = 0.3350.02;Wy = 0.350 0.02; Y > 210 cd/m2, DMEM.CHANNEL 12 ( 5000 color): 5000 color temp. parameter is Wx = 0.3460.02;Wy = 0.359 0.02; Y > 210 cd/m2 ViewSonic Corporation Confidential - Do Not Copy VA712-2_ VA712b-2 26