Sanyo PLC-XF30 Service Manual

Also see for PLC-XF30: Specifications Owner's manual Schematic diagram Owner's manual

Contents

-23--22-ASS'Y POWERHot circuitAC-INPUTLAMP BALLAST-ON/OFFPFC-ON/OFFCPU IC801andI / OEXPANDERIC1831 PRESSURESENSORTEMP.SENSORCIRCUITSUB POWERLAMP-MONITORLAMPBALLAST unitsLAMPassembliesPFC unitsSystem ControlINTERLOCK SWFUSESW902F901DC outTEMP.SENSORWARNINGTEMP.READYTEMP. SWTHERMAL-Switchesfor LAMP assembliesTEMP. SWRL-12V+BPOWER-FAILPOWER-ON/OFFIIC-SCL & SDAACDC outI / OEXPANDERPOWERCONTROL SWITCHINDICATORSFANON/OFFFANSFANSPOWER-FAILCONTROLLAMPREPLACELAMPTEMP.SENSORRESETSWITCHHAND OPERATED RESETfor CPU SW3801FOR FAN CONTROLIC5801ABNORMAL TEMP. DETECTIC2541FOR FAN CONTROLIC886ABNORMAL TEMP. DETECTPTH901The PTH901 does not existin some particular models.AlwaysSwitched16V /9V /6.25V /-6VIIC-SCL & SDAIIC-SCL & SDARESETTEMP. SENSORPRESSURE SENSOR* NO POWER -1 TroubleshootingPower on/offFan on/offPFC on/offBallast on/offPower swOFFPower swONCooling time after power off.400~600ms(Stability period of PFC.)Timing chartIsn't the lamp coverof a projectorremoved?When it is removed, theprojector cannot beturned on.Is fuse (F901) blown?Fuse may be openedwhen either the LAMPindicator or the READYindicator isn't Illuminated.Check the fuse.For continued safety,replace it with a new fuseof the same typeIs the lamp cover attachedcorrectly? And has not theboss(Inner side of the lampcover) broken?Check the boss and theInterlock switch (SW902).SW902--open: AbnormalityAre the LAMPindicator(red) and READYindicator(green) light?If the LAMP and READYindicators are not illuminat-ed, check the primary cir-cuit and S5V of standbypower supply circuit.Check that the POWERFAIL signal is correct.L : AbnormalityCheck that thePOWER FAIL sig-nals are correct.L : Abnormality Check that theVcc-voltages arecorrect.Check that the POWERON/OFF signal is correct.L : AbnormalityCheck that the Fanon/off signal is cor-rect.L : AbnormalityCheck +B(RL12)voltage for PFCcircuits.Check that the Lamp mon-itor signals are correct.Check that the PFC circuiton/off signals are correct.Check that the IICBus signals for fancontrol are correct.Refer to nextpage but oneCheck that the Lampballast on/off signalsare correct.Occasionally, this CPU maymalfunction and need to bereset.