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Very fast service, best quality of the service manual and the schematics
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This service manual of the old video cassette recorder VT-LC50EM is very good readable even the tiniest numbers (i.e. IC-pins). The circuits are very clear. Many details of the schematic are very good described but in GERMAN language. Many schematic details - but complete at all. Common background information of several details are enclosed and physical knowledge of the TFT liquid crystal display for example. The manual lacks PCB drawings. If you understand german I would recommend this manual for you.
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Hi, this is a very clear manual, nice copy, not quite up to the standard of the very best available but better than many others. I think the price was especially fair for a hard to find manual and I would certainly use this manual seller again. Recommended.
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This schema available for me in good condition. I would highly recommend.
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Thanks for this "hard to find" service manual.
I apreciate the good quality of scanning and the pages scanned in A3 format.
KRC-669/669G
COMPONENTS DESCRIPTION
Ref. No. Q5 Detection Q6 Q51 Q52 Q53 Q54 Q151 P-CON Detection Main Motor SW q Main Motor SW w Sub Motor AVR MSTC SW DSI Driver panel is taken off. When the panel is attached, the base goes �L�, turning the Tr ON to supply 5V to the panel. Q152 Q201 Q350 Q351 Q352 Panel 5V SW When panel is taken off, panel 5Vcut off. Noise buffer Pre Mute SW Pre Mute SW Pre Mute SW Drives the Pre Mute sw (Q351~354) when the base is �L�. Mutes the Rear Lch when the base is �H�. Mutes the Rear Rch when the base is �H�. �L� when FM/AM signal does not exist. �H� when P-CON output is short-circuit. Outputs 14V when the base is �L�. Q51 turns ON when the base is �H�. Output 3.6V when the base of Q4 is �L�. ON when the base is �H�. DSI lights when the base is �L�. DSI turns off when the base is �H�. DSI turns on and off when Application / Function Power-Antenna Operation / Condition / Compatibility �H� when P-ANT output is short-circuit (P.ANT OFF).
� SWITCH UNIT (X16-2500-21)
Ref. No. IC1 IC2 Q1,4 Application / Function LCD Driver Remote Control IC REMO ON SW Drives LCD Controls the unit The power supply of IC2 is turned on when base level goes �L�. Operation / Condition / Compatibility
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