Sanyo LCD-22XR7SN Service Manual

Contents

4LOGO 1 ON: display LOGO in no signal or turn onOFF: no LOGO displayADC PRESCALE 02E Software will preset the data according the unit and the data can be adjusted whenneeded.SIF PRESCALE 02E Software will preset the data according the unit and the data can be adjusted whenneeded.BACK LIGHT FF Software will preset the data according the panel and the data can be adjustedwhen needed.ALL COLOR 1 1: white balance of each channel auto offset based on the HDMI white balance0: white balance of each channel adjust the offset base separatelyEEPROM-MEMORAYRECALL> EEPROM Initialization (operate when EEPROM data chaos)3.2 Adjustment for AFT voltage and AGC voltage of IF channel in TV3.2.1 IF AFT adjustmentEnter the factory menu and set IF VCO to 1, or press “INPUT”, “2”, “5”,”8”, “1” to enter VCOadjust mode, adjust L109 to value 2.5V of TP105 (B face), then set IF VCO to 0.3.2.2 IF AGC adjustmentInput 60DB RF signal (184.25MHz for Chinese, 175.25MHz for America) to RF terminal,adjust RP101 to value 3V of TP102 (B face) and there should be no obvious snowy picture.Increase the signal to 90dBV and it should be display normally and no obvious noise.3.3 White balance adjustment3.3.1 white balance adjustment of HDMIa. Input VG-848 signal from HDMI: TIMING854(800* 600/60Hz) and eighth level gray-scalesignal of PAT920. Use color analyzer CA210 to adjust white balance.b. Enter submenu of COLOR TEMP. Select 9300k of color temperaturec. Fixed value of B OFF, adjust R OFF and G OFF, let the color coordinate of the second levelbe 285,293 and the brightness be about 3nit- 6nit. Fixed value of B GAIN, adjust R GAIN and GGAIN, let the color coordinate of seventh level be 285,293. Adjustment R OFF, G OFF, R GAIN andG GAIN repeatedly until the value of the two levels gray-scale be 285, 293.3.3.2 VGA/YPBPR/AV white balance check and correctiona. Input VG-848 signal of VGA: TIMING854(800* 600/60Hz) (PATIERN:CROSS) and autoadjust to full screen, then input PAT948 black/white signal, enter factory menu ADC ADJ, selectAUTOTUNE and wait for OK display. Input PAT920(8 gray levels), check if the white balance isnormal, if not, enter COLOR TEMP menu, set ALL COLOR to 0 and fine adjust according themethod of 3.3.1 c)b. connect VG-848 signal of YPBPR to YPBPR terminal and input TIMING972(1080i/60HZ)100% color bar of PAT976(include black/white bar), Enter submenu of ADC ADJ, SelectAUTOTUNE and wait for OK display. Input PAT920(8 gray levels), check if the white balance isnormal, if not, set ALL COLOR to 0 and fine adjust according the method of 3.3.1 c)c. Input AV signal(PM5518, 8 gray levels, PAL for Chinese and NTSC for America) to VIDEO 1terminal, check if the white balance is normal, if not, set ALL COLOR to 0 and fine adjust accordingthe method of 3.3.1 c)Note: it can’t set back to 1 once ALL COLOR changes to 0.1 hanges to 0.LOGOL ON: dOFF:splayLOLOGOGO din noplayn on3 3 1 te balaancecejadjusstmment of H