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Thanks you very much for this "hard to find" service manual.
Will help a lot in repairing this tuner.
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I have this hi-fi system for a long time and I need to repair some things. Founding this manual will be very helpfull :)
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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.
SPECIFICATIONS
3-beam laser Semiconductor laser 4-times oversampling digital filter + 1-bit DAC 20 - 20,000 Hz PHONES / LINE OUT jack (stereo mini-jack) 524AHR: DIGITAL OUT jack (optical) Maximum output: 523AHR,524AHR: 12 mW +12 mW (16 ohms at 1 kHz) 522AEZ: 10 mW +10 mW (16 ohms at 1 kHz) 500 mV (47 k ohms at 1 kHz) Power supply: DC 3 V using two LR6 (size AA) alkaline batteries 522AEZ,524AHR: DC 2.4 V using supplied rechargeable batteries 523AHR: DC 2.4 V using commercially available (Ni-Cd 1.2 V 700 mAh) rechargeable batteries AC house current using the supplied AC adaptor Maximum outside: 128 (W) x 25.8 (H) x 129.5 (D) mm dimensions (excluding projecting parts and controls) Weight: Approx. 206 g excluding batteries AC adaptor AC-D603: Rated voltage: 522AEZ: AC 230 V, 50 Hz 523AHR,524AHR: AC 115/230 V switchable, 50/60 Hz Tracking system: Laser pickup: D/A conversion: Frequency response: Output: Supplied headphones HP-M062 <522AEZ> Type: In-ear type Impedance: 16 ohms Sensitivity: 103 dB/mW Recommended commercially available headphones <522AEZ> Type: In-ear type / Vertical type / Headband type Impedance: 16 - 32 ohms Sensitivity: 96-105 dB/mW
� Design and specifications are subject to change without notice.
�2�
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