Pin protect tv panasonic model TC-5188SF ic

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micom MN1873284TG1,ic chroma M52770ASP :

D590 heater
D581 ABL
Q581 ABL
Q580 +24v
pin protect utama pin 36 ic M52770ASP normal
terukur 0V
analisa protect :
D590 protect heater,akan protect jika tegangan
di katoda D590 21.1V drop karena yoke konslet/
flyback setengah konslet/elco C590 4.7uf/50V
kering
D581 protect ABL akan protect jika katoda
D581 tegangan kurang dari 8.7V
Q580 akan protect jika tegangan VCC 24V ic
vertikal drop disebabkan ic vertikal short,elco
C508 470uf/35V kering,flyback setengah
konslet,R502 2.2 ohm putus
out acmatic :
90V
14V
30V
ic vertikal LA7840 :
1. Gnd
2. Out vertikal 9.8v
3. 24v
4. 4.2v non inverting input
5. 4.2V input vertikal
6. VCC in 24V
7. 2V
flyback TLF4N052 pin out :
1. ABL
2. Heater
3. Gnd heater
4. GND
5. +185V
6. Heater
7. +24V
8. N.C
9. B+90V
10 . Colector
ic STRF6554 :
1. 2v
2. 0V
3. 270V
4. 17.2V
5. GND
opto :
1. 14V
2. 12.8V
3. 6.1v
4. 19.5V
ic SE90 :
1. 90V
2. 12V
3. GND

Location:

Berbagi :