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-65-TroubleshootingSW901IC301SYSTEMCONTROL&SCANCONVERTERIC4801I/OEXPANDERLAMPLP900ACSW902THERMALPROTECTORA902POWERA901LAMPBALLASTQ1861CHO_RXDFILTER_DETCHO_TXDPW_MASTER_SDIPW_MASTER_SDOPW_MASTER_SCKLAMP_DC_ONIC1853INVERTER IC1854IC1816TEMPSENSOR BIC886PRESSSENSORIC1692TEMPSENSOR AIC1814TEMPSENSOR CIC9885SUB-MICONIC7801DACFANCONTROLLAMPCOVER SW.1 24123268154251151441343281161129295 1 45 1 431K8RK6RCJ1CJ2K6BRL601K6AA K6AK8KK8BK8EK8AK8S35879POWER-ON:HNetwork Standby: HEco Standby: LPOWER-ON:HError: LError: LMAINSW1891FILTER SW.31LAMP_SWINPF_FAN10 POWER_SWLOWPOWERSUPPLYPOWERSUPPLYSB_5VS16VS6VS-6VS3.3VPRESS_SENSPW_SDA0/SCL0PW_SDA0/SCL0F601FUSEPF_FANP.FAILCOOLINGFANSThe LAMP indicator lights and LAMP REPLACE indicator isflashingIf the LAMP_SWIN signal is not supplied to the Lamp Ballast, theprojector cannot be turned on. Check the follows;- Check the lamp cover and the lamp cover switch (SW901).SW901--open: Abnormality- Check the signals LAMP_SWIN, CHO_TXD, CHO_RXD output fromIC9885.The POWER and LAMP indicators do not lightIf the POWER and LAMP indicators are not lighting, check theFuse (F601) and Thermal switch (SW902) in the primary circuitand SB_5V of standby power supply circuit.- Fuse opens when the primary circuit has a error.- Thermal switch opens when surrounding temperature of lampreaches around 115ºC.Check that IIC Bussignals are correct.No PowerCheck that POWER FAIL sig-nals are correct.L : AbnormalityLAMP 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 the Power on/off signals are correct.- POWER_SW H: Network Standby / L: Eco Standby- LAMP_DC_ON H: Power-on |
