-79-Troubleshootingdetection of Power failureProjector provides a protection circuit to prevent the secondary failure when the power failure, fans failure or tem-perature failure occurs on the projector. The power failure detection lines "PF_3.3V_AD", "PF_3.3V_KS", etc. areconnected to the main power supplies. When the failure occurs, IC301 receives an error infor-mation through IC501, IC4801 and then outputs the signal "LAMP_DC_ON" from pin 3.The signal "LAMP_DC_ON" is supplied to power supply circuit to control the power supply operation.Error information tablePower failure detection systemIc Pin Signal Name connection Lines error Information Failure AreaIC501XC3S50A11 PF_3.3V_AD D3.3V_AD AD, 3.3V 3.3V AD on Main156 PF_3.3V_KS 3.3V_KS KS, 3.3V 3.3V Keystone on Main157 PF_.5V_KS .5V_KS KS, .5V .5V Keystone on Main57 PF_1.8V_KS 1.8V_KS KS< 1.8V 1.8V Keystone on Main15 PF_3.3V_GAM 3.3V_GAM GAMMA, 3.3V 3.3V Gamma on Main151 PF_.5V_GAM .5V_GAM GAMMA, .5V .5V Gamma on Main51 PF_1.8V_GAM 1.8V_GAM GAMMA, 1.8V 1.8V Gamma on Main55 PF_5VS1 S5VI DVI, 5V 5V DVI on Main191 PF_3.3VS1 S3.3VSI DVI, 3.3V 3.3V DVI on Main56 PF_1.VS1 S1.VSI DVI, 1.V 1.V DVI on Main59 PF_S3.3V S3.3V MAIN. S3.3V S3.3V on Main150 PF_15.5V_GAM 15.5V_GAM GAMMA, 15.5V 15.5V Gamma on Main16 PF_5V_PJ PJNET&3.3V PJNET, 5V 5V Network Box37 PF_9V_LNS 9V_LNS LENS, 9V 9V Lens Drive15 PF_15V_LNS 15V_LNS LENS, 15V 15V Lens Drive36 PF_6V_MAIN 6V MAIN, 6V 6V on Main35 PF_1V 1V AUSIO SW, 1V 1V Audio SW34 PF_1V_FILTER 1V FILTER FILTER, 1V 1V Filter Motor Drive3 PF_S-6V_AV S-6V AV, S-6V S-6V on Main/AV1 PF_FN904 FN904 Power & Fan Lock FN904 13V FN904 Power & Fan Lock11 PF_FN90 FN90 Power & Fan Lock FN90 13V FN90 Power & Fan Lock147 PF_FN901 FN901 Power & Fan Lock FN901 13V FN901 Power & Fan Lock7 PF_FN905 FN905 Power & Fan Lock FN905 13V FN905 Power & Fan Lock6 PF_FN906 FN906, FN907, FN908 Power & FanLock FN906&7&8 13V FN906, FN907, FN908 Power & FanLock81 PF_FN903 FN903 Power & Fan Lock FN903 13V FN903 Power & Fan Lock183 PF_FN909 FN909, FN910, FN911 Power & FanLock FN909&10&11 13V FN909, FN910, FN911 Power & FanLock185 PF_1V_AMP 1V_AMP ADUIO AMP, 1V 1V Audio Amp.IC4801TE778361 PF_S1.V_FRT FPGA 1.V SWFPGA, 1.V 1.V SW FPGA6 PF_S5V_MAIN S5V MAIN, S5V S5V on Main63 PF_5V_MAIN 5V MAIN, 5V 5V Main64 P_FAIL_LAN 3.3V LAN LAN, 3.3V 3.3V LANIC301PW39343 FILTER_DET Filter Cartridge Detection FILTER, DET Filter Cartridge Detection388 FILTER_COUNT Filter Motor MOTOR, TIMEOUT Filter MotorIC501-- FPGASW CONGIG FPGA Config FPGASW, ERROR SWFPGA Config Error16,168SHUTTER_POSI1SHUTTER_POSI Shutter Operation SHUTTER, ERROR Shutter Operation Error
