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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.
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Helpd me mont a new carradio when prewius mont was a mess.
KSC-32
FLOW CHART
About voltage write down, Li-ion & Ni-MH is S terminal voltage. Ni-Cd is not equal B+1 voltage. Ni-Cd = (B+1 voltage) � Vf Therefore Ni-Cd voltage must consider Vf of protected reverse connection diode.
START Does T,S contact? No
Yes Power out (57mA, 4S) to return protection circuit inside Li-ion Distinguish battery Li-ion
Distinguish battery Ni-Cd or Ni-MH T < 0°C or T > 40°C Temperature check 0°C < T < 40°C 0°C < T < 40°C Below6.6V Above 6.6V
Ni-Cd or Ni-MH
Stand-by temperature LED : Red
Above 11.3V
Above 8.55V or Below 0.5V
Stand-by temperature LED : Red
T < 0°C or T > 40°C Temperature check 0°C < T < 40°C
0°C < T < 40°C Below 5.5V Passage 90min. or Below 0.5V Above 5.5V Low voltage battey charge : 170mA 90 min. timer start LED : Red Error battery timer stop LED : Red flash Go to START when T contact is off. Above 5.5V 90 min. timer stop Rapid charger 1350mA Above 8.55V or Below 5.5V 180 min. timer start LED : Red Charge current is 100mA±20mA or passage 180 min. Detected full charge Finish charge timer stop LED : Green
Low voltage battey charge : 57mA Above 6.6V 20 min. timer stop Rapid charger 1350mA Ni-Cd 1000mA Ni-MH Voltage range of ��V detected 7.8~10.8V 90 min. timer start Ni-Cd 180 min. timer start Ni-MH LED : Red Detected ��V or Above 10.5V (Ni-Cd) or Above 10.8V (Ni-MH) or Passage 90 min. (Ni-Cd) or Passage 180 min. (Ni-MH) Detected full chatge 90 min. timer stop (Ni-Cd) 180 min. timer stop (Ni-MH) LED Green Ni-Cd Ni-MH 20 min. timer start LED : Red
Passage 20 min.
Below 6.6V
Below 7.8V when Rapid charge start passage 10 min.
Above 8.55V or Below 5.5V
Above 11.3V or Trickle charge : 57mA Below 6.6V 10 hour timer start LED : Green 10 hour passage Trickle charge : Ave. 5mA pulse 10 hour timer start LED : Green Finish charge 10 hour timer stop LED : Green 10 hour passage Above 11.3V or Below 6.6V
Above 11.3V or Below 6.6V
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