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-81-IC301SYSTEMCONTROL&SCANCONVERTERIC5201FPGALAMPLP900ACSW902THERMALFUSEPOWERA901LAMPBALLASTCHO_RXDFILTER_DETSCIWINDS_SENSQ331CHO_TXDPW_MASTER_SDIPW_MASTER_SDOPW_MASTER_SCKLAMP_DC_ONIC1853INVERTERIC1816TEMPSENSOR BIC3903IC3902IC1692TEMPSENSOR AS901WINDSENSORIC1814TEMPSENSOR CIC9885SUB-CPUIC7801DACFANCONTROLLAMPCOVER SW.1 23215425119114224134335468201129295 1 45 1 413K8RK6RCN1CN2K6BRL602 K6AK8KK8BK8EK8GK8S359107POWER-ON:HNetwork Standby: HEco Standby: LPOWER-ON:HError: LError: LMAINSW1891K8CFILTER SW.31LB_SWSCI_SWVDCON_GCPU_G511 42 2POWER_SWLOWPOWERSUPPLYPOWERSUPPLYSB_5VS16VS6VS-6VS3.3VPW_SDA0/SCL0_S5VPW_SDA0/SCL0F601FUSEFAN LOCKP.FAILCOOLINGFANSNo powerCheck that the Power on/off signals are correct.- POWER_SW H: Network Standby / L: Eco Standby/H:Normal standby- LAMP_DC_ON H: Power-onThe ON(G)/STANDBY(R) and LAMP indicators do not lightIf the ON(G)/STANDBY(R) and LAMP indicators are not lighting,check the Fuse (F601) and Thermal fuse (SW902) in the primarycircuit and SB_5V of standby power supply circuit.- Fuse opens when the primary circuit has a error.- Thermal fuse opens when surrounding temperature of lampreaches around 113ºC.The LAMP indicator lights redIf the LB_SW signal is not supplied to the Lamp Ballast, the projectorcannot be turned on. Check the follows;- Check the lamp cover and the lamp cover switch .lamp cover switch--open: Abnormality- Check the signals LB_SW, CHO_TXD, CHO_RXD output fromIC9885.LAMP indicator lights and other indicators blinkIf the LAMP indicator is lighting and other indicators are blink-ing, the projector detects an abnormal inside the projector.Check following points;- Check the secondary power supply. Error on the low powervoltage- Check the fan operation. Error on the fan.- Check the filter cartridge detecting switch (SW1891).SW1891 open: Error- Check the signal FILTER_DET supplied to IC301.FILTER_DET Low: ErrorCheck that IIC Bussignals are correct.Check that POWER FAIL sig-nals are correct.L : AbnormalityTroubleshooting
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