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WILLIAMS DEFENDER THEORY EARLY
Type: 
(PDF)
(PDF)Size
3.2 MB
3.2 MB
Page
38
38
Category
OTHER
SERVICE MANUAL
OTHER
SERVICE MANUAL
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WILLIAMS DEFENDER THEORY EARLY
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Sziasztok!
FANUC cnc főorsó frekvencia váltót nem lehet bekapcsolni A motorról visszament a nagyfesz. Ehhez kerem a segitsegeteket.
FANUC cnc főorsó frekvencia váltót nem lehet bekapcsolni A motorról visszament a nagyfesz. Ehhez kerem a segitsegeteket.
Nézelődtem a neten de nem sok mindent találtam róla,kipróbálni nem próbáltam,mert nincs uhf antennám,szerintem olyan mindig tv lehet ,csak nem dvbt-s,szerintem.Ki mit mond?
Sziasztok!
A fent nevezett készülék hibája a következő:áram alá helyezés után stby led piros,bekapcsolás után kijelzőn "ON" felirat jelenik meg és itt meg is ragad,a kép fekete,se osd,se hang,tehát semmi csak a nagy sötétség.
Ezek után jöhet a tételes vizsgálat(tápfeszek....)gondoltam.Nos itt minden rendben volt,tehát semmilyen szemmel látható vagy mérhető hiba nem észlelhető.Ezek után szoftver hibára gyanakodtam és bejött.Az RS232 csatlakozón a hozzá való szoftvert feltöltve, majd újraindítva a készülék hibátlanul működik.Remélem hasznos lesz majd valakinek ez a leírás is. Üdv.
Working on a speed charge battery maintainer for small engines battery. Heat sink had (2) S2025R T0-220 type components on it. Seems they are an SCR and I have 57 ohms on 1 and 3 pin, so seem they are short. Cant get these anymore but installed S4025R which seems to be better replacement. Before replacing, heat sink seemed to be really hot after replacng on on
board 10 amp automotive slot type fuse, so seemed these SCR were bad, getting hot woth no load.
Standby LED not lighting with new SCR's installed. Old ones did not have heat sink compound on them, so I used some to better transfer heat. I saw the input of the 7805 1 amp
regulator IC has short, so removed it, and its not shorted, but the feed to it comes from the IC chip on board, a EM78P41 BWD20J. Data sheet for EM78P41 is online. They have pin 16 going to pin 1 of the 7805 regulator. Actual reading on pin 16 to ground is 2.5 ohms. I suspect this IC is shorted output. Is there chance to replace IC or is this repair finished?
board 10 amp automotive slot type fuse, so seemed these SCR were bad, getting hot woth no load.
Standby LED not lighting with new SCR's installed. Old ones did not have heat sink compound on them, so I used some to better transfer heat. I saw the input of the 7805 1 amp
regulator IC has short, so removed it, and its not shorted, but the feed to it comes from the IC chip on board, a EM78P41 BWD20J. Data sheet for EM78P41 is online. They have pin 16 going to pin 1 of the 7805 regulator. Actual reading on pin 16 to ground is 2.5 ohms. I suspect this IC is shorted output. Is there chance to replace IC or is this repair finished?
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