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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.
ADJUSTMENT
1. AM IF Adjustment IFT101 ........................................................................ 450 kHz 2. AM VT Check Setting: � Test point: TP1 (VT) Check: AM 531 kHz (YZ)/AM 530 kHz (YH) ...... 0.9 ~ 1.4 V AM 1710 kHz ...................................... Less than 8.2 V
L102 L104
5. FM VT Adjustment Settings: � Test point: TP1 (VT) � Adjustment location: L104 Method: Set to FM 87.5 MHz and adjust L104 so that test point becomes 2.3 ± 0.1 V. Check: FM 108.0 MHz (YZ)/FM 108.1 MHz (YH) .......................................... Less than 5.5 V FM 76.0 MHz (YH) ........................... More than 1.0 V
HJ501
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3. AM Tracking Adjustment L112 ............................................................................ 630 kHz TC102 ....................................................................... 1440 kHz 4. FM IF Adjustment TC101 ...................................................................... 10.7 MHz 6. FM Tracking Adjustment L102 ......................................................................... 87.5 MHz 7. VCO Frequency Adjustment SFR101 .......................................................... 19 kHz ± 100Hz
VR151 VOLUME
TC101 TC102
IFT101
S209
SFR101 S212 S211 S202
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PRACTICAL SERVICE FIGURE
TP1 (VT)
<FM SECTION> IHF Sensitivity: (IHF, THD 3%)
L112
Less than 16 dB (87.5 MHz) Less than 15 dB (98.5/108.0 MHz) More than 50 dB (87.5/98.5/108.0 MHz) Less than 2.0% (98.5 MHz) More than 20 dB (98.5 MHz) 10.7 MHz
<AM SECTION> Sensitivity: (S/N 10 dB)
Less than 51 dB (630 kHz) Less than 48 dB (999 kHz) Less than 45 dB
Signal to noise ratio: Distortion: (Input - 54 dB) Stereo separation:
TP2 (VCO)
Signal to noise ratio: (Input - 74 dB)
(1440 kHz) More than 31 dB (603 kHz) More than 33 dB (999/1440 kHz) Less than 4.0% (999 kHz) 450 kHz
Intermediate frequency:
Distortion: (Input - 74 dB) Intermediate frequency:
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