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Sony KD-55A8F Service Manual
Also see for BRAVIA KD-55A8F: Setup guide
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(Supplementaryinformation)Check Enable pinvoltageIs voltage >3V?1.2 No Power U-Com FailureorEnable sourcenoSTARTyesChange LDO ICCheck Vcc voltageC4xxx or C6xxIs voltage >3V?Check +3.3V_DDC_OUTDDCON (IC403)or+3.3V_STBY (G* board)noyesIC Ref Voltage supplyIC602 +1.05V_M2_STBYIC603 +1.05V_M2_A_1IC605 +1.05V_M2_ST_ETIC606 +1.05V_M2_A_2IC607 VCC3IO_EMMC(1.8V)IC4004 +1.8V_BE1.3 No Power DDCON/LDOBM2A Board ModelPlease refer page-19 for Ref number.yes22 22LDOs check |
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