Sanyo PLC-EF31 Service Manual
Also see for PLC-EF31: Owner's manualService manual
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Contents
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-57-The cautions in schematic diagrams! 1. Safety significant partsProduct safety should be considered when a component replace-ment is made in any area of the projector. Components indicatedby mark ( ) in the parts list and the schematic diagram desig-nate components in which safety can be of special significance. Itis, therefore, particularly recommended that the replacement of theparts must be made by exactly the same parts. 2. The cautions in collation of parts.DO NOT REPLACE OR ORDER RESISTOR AND CAPACITORPARTS FOLLOWING THE SPECIFICATIONS SHOWN IN THESCHEMATIC DIAGRAMS.Always check for the correct specifications in the parts list, espe-cially for critical component marked ( ). Special attentionmust be given to critical components. Specification of capacitorand resistors will be shown with coded symbols, reading codesymbols following the chart and notes. Some capacitor and resis-tors will be shown directly with values and no other information.Detailed information on each capacitor and resistor will be shownin the list. 3. Reading of parts.Read resistor codes as follows:1. All resistance values are indicated in ohms:K=1,000.M=1,000,000.2. Wattage, material and tolerance codes can see it on the chart ofnext page.Read capacitor codes as follows:1. For capacitors identified with ,values less than 1 are expressed in uF,values more than 1 are in pF.2. For capacitors (electrolytic) identified with ,values are expressed in uF.3. Rated voltage, material and tolerance codes can see it on thechart of next page. 4. Risk of electric shockHOT CIRCUIT IS IDENTIFIED WITH THE LINE ( ) INTHE SCHEMATIC DIAGRAM.The signal circuit and control circuit of this projector are insulated(COLD) from AC line by the insulation transformer inside the pro-jector. But, assembly power, assembly PFC, assembly lamp bal-last and assembly lamp are not insulated from AC line, and thoseare "HOT." An insulation transformer should be connected in thepower line between the projector and the AC line before the serviceof hot circuit is performed on the projector. |
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