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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.
IC DESCRIPTION
IC, TMP47C443LDM-1B45(EL) Pin No.
1 2 3 4 5 6 7 8 9 10 11 12 ~ 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Pin Name
XOUT XIN RESET EJECT SW BUZR TEST HOLD NC L.V.STOP MAIN IN REMOTE IN NC POWER ON GND PHOTO OUT LOAD CTL MOT ON MOT DIR BRAKE MOT HI MOT CH NC P-SNSR C-SW AUTO SW F/R CTRL MUTE WAKE UP VDD
I/O
O I I I O I I � I I I � O � O O O O O O I � I I I O O I � Connected to 4MHz crystal oscillator. Input reset signal. Input EJECT SW."H": OFF, "L": ON. Output buzzer sound.
Description
Input test mode. "H": Test ON. (Connected to GND). Input HOLD SW. "H": OFF, "L": ON. Connected to GND. Input reducing voltage detection. "L": Mecha STOP. Input key from main unit (A/D). Input key from remote controller (A/D). Not connected. Output power for audio circuit. "L": ON. Connected to GND. Microcomputer detection P-SNSR level output pin. Output for voltage supply checking. "L": Check. Output motor activation. "L": ON. Output motor rotating direction. "L": Counterclockwise. Output motor brake. "L": ON. Output motor hi-speed activation. "L": ON. Input motor activation detection. Connected to GND. Input sensor waveform. Input cassette tape detection. "H": Not exist, "L": Exist. (Connected to GND). Input AUTO SW. "H": AUTO operation, "L": NO AUTO operation. Output FWD, REV control. "L": REV. Output muting. "L":ON. Input micro-computer OSC ON. Power supply (+3V).
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