User manual SANYO VMC8619P SERVICE MANUAL

[. . . ] Replacement parts having special safety-related characteristics are identified in this manual, and in the schematic diagrams, by the symbol !These components have values that are of special significance to product safety. Should any component (identified by the symbol ) need to be replaced, use only the part designated in the parts List. Do not deviate from the specified resistance, wattage, and voltage ratings. [. . . ] Supply power to the set and measuring instruments and allow to warm up for at least 30 minutes. NOTE Be sure to use a non-metallic driver for adjusting there VRs. A metallic driver can cause damage by shorting. Color analyzer Adjustment mode Over scan mode ADJUSTMENT ITEM CHECK B+ VOLTAGE TIMING PATTERN PATTERN GENERATOR MONOSCOPE PATTERN SETTING VR LOCATION ADJUSTMENT PROCEDURE TEST POINT : D901(-) DIGITAL VOLT METER VALUE 38. 0 ± 0. 5 VDC. HOLD DOWN VOLTAGE SETTING PATTERN GENERATOR MONOSCOPE PATTERN BRIGHT VR and CONTRAST VR TO MAX. VR503 TEST POINT : ZD501(-) DIGITAL VOLT METER VALUE 8. 35 ± 0. 1 VDC. FOCUS ADJUSTMENT PATTERN GENERATOR MONOSCOPE PATTERN BRIGHT VR and CONTRAST VR TO 75%. SHARPNESS VR TO MAX. FTB FOCUS VR1 and VR2 Adjusting FBT Focus VR1, 2 make focus resolution of reach over 800TV lines, four corners must be aiso clear. HORIZONTAL PHASE ADJUSTMENT PATTERN GENERATOR MONOSCOPE PATTERN BRIGHT VR , CONTRAST VR and SHARPNESS VR TO MAX. FACTRY PRESETTING VR401 Adjusting VR401 horizontal phase make right and left of picture to <=1%. HORIZONTAL SIZE ADJUSTMENT VERTICAL LINEARY ADJUSTMENT PATTERN GENERATOR MONOSCOPE PATTERN VR306 Adjusting VR306 make signal side of picture of scale at 1. 5 ± 0. 5 position. PATTERN GENERATOR MONOSCOPE PATTERN BRIGHT VR , CONTRAST VR and SHARPNESS VR TO MAX. BRIGHT VR , CONTRAST VR and SHARPNESS VR TO MAX. FACTRY PRESETTING VR302 Adjusting vertical linear control VR302 for equal spacing of lines between center extreme of scan [(Max-Min)/Average]<=10%. VERTICAL CENTER ADJUSTMENT PATTERN GENERATOR MONOSCOPE PATTERN VR303 Adjusting vertical center control VR303 to <=1%. VERTICAL SIZE ADJUSTMENT PATTERN GENERATOR MONOSCOPE PATTERN VR301 Adjusting vertical size control VR301 make signal side of scale is 1 ± 0. 3 position. ­6­ ADJUSTMENT ITEM WHITE BALANCE ADJUSTMENT AT VMC-8618 TIMING PATTERN PATTERN GENERATOR NO SIGNAL SETTING BRIGHT VR , CONTRAST VR and SHARPNESS VR TO MAX. VR LOCATION VR801, VR803, VR805, FBT FOCUS VR ADJUSTMENT PROCEDURE Adjust VR805 G-Bias to center. Adjust FBT screen VR make luminance without video to 1. 0 ~ 1. 5 FL. Adjust VR801 make X value is 0. 281 ± 0. 015. Adjust VR803 make Y value is 0. 298 ± 0. 015. PATTERN GENERATOR FULL WHITE VR804, VR802, Adjust VR501 make luminance with video BRIGHT VR , VR501 signal to 38 ~ 42 FL. CONTRAST VR Adjust VR804 make X value is 0. 281 ± and SHARPNESS 0. 015. Adjust VR802 make Y value is 0. 298 ± 0. 015. BRIGHT VR , CONTRAST VR and SHARPNESS VR TO MAX. VR801, VR803, VR805, FBT FOCUS VR Adjust VR805 G-Bias to center. Adjust FBT screen VR make luminance without video to 1. 0 ~ 1. 5 FL. Adjust VR801 make X value is 0. 313 ± 0. 015. Adjust VR803 make Y value is 0. 329 ± 0. 015. WHITE BALANCE ADJUSTMENT AT VMC-8619P PATTERN GENERATOR NO SIGNAL PATTERN GENERATOR FULL WHITE VR804, VR802, Adjust VR501 make luminance with video BRIGHT VR , VR501 signal to 38 ~ 42 FL. CONTRAST VR Adjust VR804 make X value is 0. 313 ± and SHARPNESS 0. 015. Adjust VR802 make Y value is 0. 329 ± 0. 015. FBT SCREEN BRIGHT VR , VR CONTRAST VR and SHARPNESS VR TO MAX. VR501 BRIGHT VR , CONTRAST VR and SHARPNESS VR TO MAX. [. . . ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]