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GALANZ WP800AP20
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of GALANZ WP800AP20 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 19 (click to view)
micro switch has broken, and the timer should be replaced by a new one. If all the above examination shows normal ,then check whether the terminal pÅug of the magnetron and the capacitor have loosened, if it is loosened, pinch it tightly with a pliers. 5.2.5 EXAMINE THE STARTING AND THE 8A FUSE OF THE MICROWAVE OVEN.

Puli out the power pÅug, take off the cabinet, discharge the capacitor, measure the resistance value of the primary winding and the secondary winding of the transformer with an avometer (FIG.5 - 10 and FIG.5 - 9). The resistance value of the primary winding should be about 2.2 ohms, the secondary winding should be about 130 ohms. Otherwise, it indicates the transformer has broken, and should be replaced by a new one. If the transformer is normal, then the high voltage capacitor Fig. 5-8 should be checked. Puli out the connecting pÅug of the capacitor, and measure it with R*1 grade of an avometer, the two rods of the avometer connect the two polarity of the capacitor. When they just connected, the reading of the avometer should be zero, then increases to nine megaohm slowly. Change the rod to different polarity, the reading repeat secondary winding from zero to nine megaohm (FIG.5 - 11), it means the capacitor is normal. If the indicator of the avometer can't point out from zero to nine megaohms, it indicates the high voltage capacitor has broken, and should be replaced by a new one. If it is normal between the two pole of the capacitor, then the insulation between the capacitor pole and the cabinet should be measured with RxlOK grade of an avometer. The resistance value should be "°°" (FIG.5 - 12). If it is short circuited or have a number reading, it indicates that the capacitor has been punctured or electricity leaked, and should be replaced by a same model, same capacity one.
transformer primary winding

Fig. 5-9

Fig. 5-10

Fig. 5-12

If the resistance value of the capacitor's two pole arÄ "°°" , the capacitor is normal. Then check the earth of the magnetron's two filaments to see whether they arÄ short circuited (FIG.5 - 13). If they arÄ short - circuited and the filament strikes the shell of the magnetron, it indicates the magnetron magnetron has broken, and should be replaced by a new, same model one. If the magnetron is also normal, then test the pilot switch. Puli out the two plugs of the switch. Measure it with the R*1 grade of avometer, the two rod connect the pÅug of the switch, the resistance value should be"°°" (FIG.5 - 8). Then press down the pilot switch with a screwdriver, if the reading of the avometer pointed to zero, it indicates the pilot switch has broken, and should replace it with a new, same

18

Fig. 5-13

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