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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.
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Helpd me mont a new carradio when prewius mont was a mess.
SECTION 4 MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened swab : playback head pinch roller capstan rubber belt 2. Demagnetize the playback head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage (2.5 V) unless otherwise noted. Torque Measurement Mode FWD FWD back tension REV REV back tension FF, REW CQ-102RC CQ-102C Torque Meter Meter Reading 20 � 42 g � cm (0.28 � 0.58 oz � inch) less than 2 g � cm (less than 0.03 oz � inch) 20 � 42 g � cm (0.28 � 0.58 oz � inch) less than 2 g � cm (less than 0.03 oz � inch) more than 50 g � cm (more than 0.69 oz � inch)
SECTION 5 ELECTRICAL ADJUSTMENTS
PRECAUTION
� Supplied voltage : 2.5 V � Switches and control position TAPE SELECT switch : NORMAL SOUND switch : NORMAL VOL control : maximum AVLS switch : NORMAL DOLBY NR switch : OFF (FS595) HOLD switch : OFF Test Tape Type WS-48A Signal 3 kHz, 0 dB Used for Tape Speed Adjustment
Tape Speed Adjustment Procedure :
test tape WS-48A (3 kHz, 0 dB) set frequency counter 16 �
CQ-201B
2 jack
1. Playback WS-48A (tape center part) in the REV state and adjust RV601 so that the frequency counter reading becomes 2,970 � 3,000 Hz. 2. Playback WS-48A (tape center part) in the FWD state. Check that frequency counter reading is within ± 1.5% of the reading of step 1. Adjustment Location :
RV601
� 11 �
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