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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.
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This schema available for me in good condition. I would highly recommend.
3. TUNER ADJUSTMENT 3-1. AGC Adjustment
(3) Using a DC power supply, add DC3.0V ± DC0.2V of voltage to the IC301 Pin10 (TP14). (4) Make adjustments with L203 so that the waveform�s center section (a section in the figure below) of the ALIGNMENT SCOPE becomes 45.75 MHz ± 50 kHz. (1) Receive a NTSC signal of RF INPUT under the following conditions. Input level: 58 dBµ Modulation percentage: 87.5% Received channel : US TV 10ch (fp = 193.25MHz) (2) Adjust SFR201 so the voltage at the TU101 Pin1 (TP15 or JW101) is 6.8V ± 0.2VDC. (Simple Adjustment Method) (1) Using the LEADER LCG-401 (65dBµ), receive the color bar signal on channel 2. (2) With SFR201, make adjustments so that the voltage of TU101 pin1 becomes 3.6VDC. (3) Receive a television broadcast, and verify that the screen is clear.
45.15
46.35
a
47.75MHz
3-2.
VCO Adjustment
(5) Remove the capacitor.
( Rough Adjustment ) (1) Make connections as they appear below.
3-3.
AC POWER SUPPLY TU 101 Pin ! (TP2, IF)
10 TP14
AFT Adjustment
(1) Connect the resistance of 1 k� between the TU101 Pin11 and the GND.
TU 101 11 TP2 1k�
ATT
IC301 44 TP12
LSW � 480 VIF
ALIGNMENT SCOPE
(2)
Connect between Pin52 and GND of IC301 with capacitor.
(2) Input the following signal conditions to the TU101 Pin11. (AM/FM SSG) CARRIER 45.75 MHz LEVEL 100 dBµ MOD OFF (3) Make adjustments with L206 so that the voltage of the IC301 Pin47 (TP16) is DC4.5V ± DC0.2V. (4) Remove resistance (1 k�). ( Simple Adjustment Method )
IC301 52 + CAP, 10/50 + C207 0.47/50
(1) Using the pattern generator LCG-401, receive the signal for channel 2. (2) Adjust L206 so that the voltage at IC301 Pin47 (TP16) becomes 4.5V ± 0.3VDC. (3) Receive each television broadcasts and vertify that the picture is clear.
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