Panasonic TX-32LX1X Service Manual

Also see for TC-26LX1H: Operating instructions

Contents

Panasonic TX-32LX1X Service Manual Manual pdf 21 page image

9 Adjustment method9.1. Video Signal Level Adjustment9.1.1. RF videoInstrument Name Connect to RemarksRemote controllerInternal signal (100% composite picture color bar)RF input1. Receive composite picture color bar (100% PAL) by RF signal input.(Aspect mode : wide, Viewing mode: standard, LCD AI: OFF)2. Go to "Auto Y Gain" under Service 1 and make automatic adjustment of video signal level by the blue key. When Service 1 appears, presetting takes place automatically as shown below. Sharpness: 0 AI: OFF Comb filter : On3. Press STR key to write the value of adjustment results to EEPROM.4. Check that the automatic adjustment of video signal level has completed normally. When the adjustment is completed normally, the "Auto Y Gain" color turns black.9.1.2. RF AGC adjustment (Auto adjustment)1. Receive RF signal, and enter the Service 1, RF AGC adjustment mode.2. The adjustment will be finished automatically if blue key is pressed on the remote controller. (The character colour will be blackif finished.)3. Change the input signal strength and check the RF AGC Reference value is as follows. Signal strength: 63dB = about 130 to 140 Signal strength: 93dB = about 60 to 70 Signal strength: 33dB = about 190 to 2009.2. WB AdjustmentInstrument Name Connect to Remarks1. Remote controller2. LCD WB meter (Minolta CS-1000 equivalent)3. Communication jig4. Computer for external controlAdjustment terminal Correlation can be also takenby CA-110 or equivalent Basically perform checking using the production software and make automatic adjustment using external computer. Let the panel stand for more than 3 hours at 20 °C to 25 °C. Basically perform assemble to completion in the ambient environment of room temperature 20 °C to 25 °C.1. Enter into WB adjustment in the plant adjustment mode and measure the WHITE brightness data to check that it is higher than400 cd /m 2 .(When it is below 400 cd /m 2, make re-measurement in 30 minutes after cold-on.)2. For the Excel calculation sheet, use "LX1 series, calculation software".3. Using the jig, measure the brightness and chromaticity coordinates of single colors, white, red, green and blue, at the maximumbrightness (using basic data) and calculate the gamma data corrected at the maximum brightness using Excel calculation sheeton the external computer.4. Write the values calculated in 3 above in the gamma data part in EEPROM.EEPROM Adr: 0C58h ~ 0C5Bh, 0C5Ch ~ C5Fh ...R (color temperature Normal)0C08h ~ 0C0Bh, 0C0Ch ~ 0C0Fh ...G (color temperature Normal)0C30h ~ 0C33h, 0C34h ~ 0C37h ...B (color temperature Normal)Note:For T.T., P.P. and M.P., record the brightness and chromaticity coordinates for white, red, green and blue.5. Reflect the data in 4 above and select gray and measure the brightness and chromaticity coordinate at that time and calculatethe gamma data (color temperature, normal) and cool and warm color temperatures, corrected at half-tone, using the externalcomputer.21TX-32LX1X / TX-32LX1M / TX-32LX1A / TX-32LX1T / TC-32LX1H / TC-32LX1DJ / TX-26LX1X / TX-26LX1M / TX-26LX1A / TX-26LX1T / TC-26LX1H