Panasonic TC-26LX70L Service Manual

Also see for TC26LX70L - 26" LCD TV: Operating instructions

Contents

Panasonic TC-26LX70L Service Manual Manual pdf 24 page image

12.2. White balance adjustmentInstrument Name Remarks1. Remote control2. LCD WB meter (Minolta CA-110 equivalent)3. Communication jig4. Computer for external controlMeasurement distance is 21cmProcedure Remarks1. Enter the White Balance adjustment mode in Check mode, It checked 300cd/m2 or more that measureluminance when white.(Display menu: vivid-basic, LCD-AI: off, backlight: +30)(If it is 300cd/m2 or less, measures again when cold on after 30 minutes.)2. It decide “basic color-1” and “basic color-2” when peak adjustment that to measure luminance and thedegree coordinates of color when white.3. The degree of color is set to a target two other than “basic color-1” (locked 0xff) of R-GAIN, G-GAIN andB-GAIN, when displayed white. If can not set to the degree of target color, The degree of color is set to atarget two other than “basic color-2” (locked 0xff) of two item.color temp. - cooltarget color (x0,y0) =(0.271±0.002, 0.275±0.002)color temp. - normaltarget color (x0,y0) =(0.285±0.002, 0.293±0.002)color temp. - warmltarget color (x0,y0) =(0.314±0.002, 0.324±0.002)basic-color1/2 RED GREEN BLUEAdjust x-axis B-GAIN R-GAIN R-GAINAdjust x-axis B-GAIN R-GAIN R-GAIN* Point of the degree coordinates of color becomes large when R-GAIN and G-GAIN are enlarged. Pointof the degree coordinates of color becomes small when B-GAIN is enlarged.* Case of adjust by remote controller, It chooses from the items of R-GAIN,G-GAIN and B-GAIN by [3]and [4] key on remote controller.And value is changed by volume [+] and [-] key.It will be easy to converge if is adjusted preferentially4. Next, The degree of color is set to a target two other than “basic color : G-CENT” (locked 0x80) of R-CENT and CENT when displayed gray.basic-color GREEN The method of adjustmentAdjust x-axis R-CENT When it is enlarged that point of the degreecoordinates of color becomes large.Adjust y-axis B-CENT When it is enlarged that point of the degreecoordinates of color becomes small.*Case of adjust by remote controller, It chooses from the items of R-CENT, and B-CENT by [3] and [4]key on remote controller.And value is changed by volume [+] and [-] key.5. If It converges on the degree of target color, the data is written to EEPROM.*Case of adjust by remote controller, Long aggressiveness [8] key on remote controller in the state of R-CENT,G-CENT and B-CENT6. Check to the degree coordinates of color when white and gray are inx=0.271±0.003 y=0.275±0.003 (when color temp is cool)x=0.285±0.010 y=0.293±0.010 (when color temp is normal)x=0.314±0.015 y=0.324±0.015 (when color temp is warm)Time to aging is a thing for 20minutes or more.The panel is left for three hoursor more in 20-25 °C.All processes from assembly tocompletion are done in asurrounding environment fromthe room temperature 20 °C to25 °C.Change to the color temp. byremote controller or PC. andAdjustment forthree color.24TC-26LX70L / TC-32LX70L