Sanyo PLC-SW30 Service Manual

Also see for plc sw30 - SVGA LCD Projector: Owner's manual Specifications Service manual Service manual Owner's manual

-5-● Lamp cover switchThe lamp cover switch (SW8801) cuts off the drive signal to thelamp circuit when the lamp cover is removed or no close com-pletely. After opening the lamp cover for replacing the lamp ass’y,place the lamp cover correctly otherwise the projector can notturn on.● Thermal switchThere is the thermal switch (SW902) inside of the projector toprevent the internal temperature rising abnormally. When theinternal temperature reaches near 100˚C, turn off the AC mainpower supply automatically.The thermal switch is not reset to normal automatically even if theinternal temperature becomes normal. Reset the thermal switchfollowing procedure.Check the resistance between terminals of thermal switch byusing the tester. If it has high impedance, thermal switch may bein operative.How to reset the thermal switch1. Remove the cabinet top following to “MechanicalDisassemblies”.2. Press the reset button on the thermal switch with a sharp-pointed tool.CAUTION:Before press the reset button, make sure that the AC cord mustbe disconnected from the AC outlet.■ Circuit ProtectionsThis projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro-jector, it will automatically turn off by operating one of the following protection circuits.● FuseA fuse is located inside of the projector. When the POWER indica-tor is not lightning, the fuse may be opened. Check the fuse as fol-lowing steps.The fuse should be used with the following type;How to replace the fuse1. Remove the cabinet top following to “MechanicalDisassemblies”.2. Remove the cover on the Filter Board.3. Remove fuse from fuse holder.To install the fuse, take reversed step in the above.Fuse Part No.: 423 022 2102TYPE T4.0AH 250V FUSELITTEL FUSE INC. TYPE 215004FuseFilter BoardThermal SwitchLamp CoverLamp Cover Switch