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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.
The cellular phone and Bluetooth cannot be connected.
Check enter in a set screen of the telephone
NG
Check the power of IC901 (Bluetooth module)
NG
Confirm to IC901 (Bluetooth module) IC502 (the power of 3.3V)
OK Confirm to IC901 (Bluetooth module) the circuit of Q101,102,104,105,106,107,108
OK
Check how to connect by inquiry from the cellular phone
NG
OK
Check the link of Bluettoth steady or the BT mark on
Confirm to IC901 (Bluetooth module) the circuit of Q101,102,104,105,106,107,108 ANT902 (Bluetooth module) Confirm to IC901 (Bluetooth module) the circuit of ANT902 (Bluetooth module)
NG
OK Confirm to connect Bluetooth with the cellular phone again
The receiving talk voice doesn't go out of the speaker.
Check connect it with the cellular phone
NG
Confirm to IC901 (Bluetooth module)
OK Check the sound of CD or radio OK
Check the call sound come to send it by telephone
Confirm to NG IC402 (DSP), IC501 (AMP), IC503 (Power AMP), J502 (Connector)
OK
Check the power of IC901 (Bluetooth module)
OK
NG
Confirm to the circuit of IC502 (the power of 3.3V) Confirm to the circuit of IC502 (the power of 3.3V) Confirm to the circuit of IC101 (CODEC) IC901 (Bluetooth module)
OK Check the power of IC101 (CODEC) OK Check the waveform of 9pin of IC101 OK
Check the waveform of 43pin of IC402(DSP)
NG
NG
NG
Confirm to the circuit of IC402 (DSP)
OK Confirm to the output of J502
-7-
PN-3000P PP-3000M
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