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Ottima qualità grafica e completo nelle notizie. Costo abbastanza contenuto.
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Great and quick support. The maual was exactly what I was looking for and my problem
solved. Many thanks.
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Very good service Within one day i received a pdf of the users manual and electric circuits so I was able to measure the different voltages in the printed circuit and find out the fault Payment was also reliable and easy.Without the manual i could not have repaired.So thanks to "Search for a manual"
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you are doing great job guys.....my father ask me to find out the schematics of Sony KV25R1D to sort out the problem ..(he was electrical technician, and excperianced with TV and simillar stuff). finally he found the cause and change all necessary parts....now he has got working old dog..and is very happy!!... thank you all.. NB..he also saved the repair cost.
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Perfect. Received my manual within 24 hours. Clear scan of the manual I needed. No problem.
4-9. VPP sensor circuit
Protection circuit
To prevent the circuit breakage, the protection circuit watches the voltage level of VCC, VDD and VPP. When the each voltage level is more than following condition, this circuit cuts the voltage. VCC,VDD: In case these voltages are become over voltage, this circuit outputs �SCR� signal(High signal) and burn out the fuse. In case the VPP voltage is more than 15 V or less than 13.9 V, the �VPP.S� level is inverted and CPU cut the �VPP.ON� signal.
VPP:
Detection voltage level (Unit: V) VCC >= +6.5 V VDD >= +6.5 V +13.9 V =< VPP <=15.0 V
4-10. Power supply circuit for display
VC VP GND
This circuit is making the power for display tube. Voltage level: -VN VF1 - VF2 Est. -31.2 V Est. AC4.85 V
� 11 �
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