Sanyo PLC-XF20 Service Manual

Also see for XF20 - PLC XGA LCD Projector: Owner's manual Specifications Instruction manual

Contents

-5-Cover topInterlockswitch❏ The lamp circuit of this projector is not isolat-ed from AC line, and it is HOT circuit.❏ The Interlock switch (SW902) cuts off thelamp circuit from AC line when cover-top isopened.❏ Electric shock protection - Interlock switch (SW902)AC INPUT FuseF901 Main swSW901LF901Interlock SWSW902Ass'yPowerP.F.C.1/2P.F.C.3/4Lamp 1Lamp 2Lamp 3Lamp 4❏ Optical protection - Temperature monitorFN905ForG-panelForB-panelForR-panelForLamp1ForLamp2ForLamp3ForLamp4SW903~906Bottom of the optical unitMainIC5801 Temp. sensors locationFront sideTemp. Sensor(outside air)IC2541Temp. Sensor(periphery of B-Panel )SW90490*CSW903100*CSW906100*CSW905100*CAbnormal temperature detect. SENSOR-IC2541If a temperature of periphery of B-LCD panelreaches to 46~48*C the projector will beturned off and warning temperature indicatoris flashing.Thermal switch (SW903~906)If a temperature on the periphery of lampreaches 90*C or 100*C, the projector willbe turned off.SW904 90*CSW903/905/906 100*CFan control SENSOR-IC5801Fan drive-voltages control.Refer to trouble shooting "Abnormal temperature."