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I have this hi-fi system for a long time and I need to repair some things. Founding this manual will be very helpfull :)
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It is pretty good. The schematics were covered all components, the manual also provide the parts list . It's useful for the trouble shooting.
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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.
Pin No. 43 44 45 46 47 48 49 50 51
Pin Name XVDD XOUT XIN XVSS SBSY EFLG PW SFSY SBCK
I/O � O I � O O O O I Crystal oscillator power supply pin.
Description
Pin to which external 16.9344 MHz crystal oscillator is connected. Crystal oscillator GND pin. Be sure to connect to 0V. Subcode block sync signal output pin. C1, C2, single and dual correction monitoring pin. Subcode P, Q, R, S, T, U and W output pin. Subcode frame sync signal output pin. Falls down when subcode enters standby. Subcode read clock input pin. Schmidt input. (Be sure to connected to 0V when not in use.)
52 53 54 55 56 57 58 59 60 61 62 63 64
FSX WRQ RWC SQOUT COIN
___________
O O I O I I I O O O I I
Pin outputting the 7.35 kHz sync signal which is generated by dividing frequency of crystal oscillator. Subcode Q output standby output pin. Read/write control input pin. Schmidt input. Subcode Q output pin. Command input pin from microprocessor. Command input read clock or subcode read input clock from SQOUT pin LC78622 reset input pin. Set this pin to L once when the main power is turned on. Test signal output pin. Use this pin as open (normally L output). 16.9344 MHz output pin. 4.2336 MHz output pin. Test signal input pin with built-in pull-down resistor. Be sure to connect to 0V. Chip select signal input pin with built-in pull-down resistor. Be sure to connect to 0V while it is not controlling.
CQCK
________
RES TST11 16M 4.2M TEST5
______
CS TEST1
I
Test signal input pin without built-in pull-down resistor. Be sure to connect to 0V.
Note: The same potential must be applied to the respective power supply terminals. (VDD, VVDD, LVDD, RVDD, XVDD)
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