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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.
WIRING MANAGEMENT DRAWING
NOTE: For general servicing, it is necessary to eliminate pinching of any wire during reassembly. After servicing any electrical component or electrical enclosure, the unit should be reassembled and checked for dielectric breakdown or current leakage.
POWER CORD REPLACEMENT
Removal
1. Refer to Handle Removal / Installation Section, page 16. 2. With handle removed from body disassemble handle by removing fourteen (14) screws. Refer to Handle Exploded View (page 10). 3. Remove handle release button and spring.
BLACK (SWITCH) BLACK (SWITCH) CABLE TIE
4. Remove damaged cord.
Installation
1. Replace damaged cord. carefully routing power cord as illustrated in (Fig. 11). 2. Reinstall handle as outlined in the handle installation section. 3. Replace the cord stopper, the two (2) cord stopper screws and the wire connectors. NOTE: Never reuse a cord stopper. Always install a new cord stopper whenever the old one is removed.
Power Cord
(Fig. 11)
Note: Powercord should extend 75mm beyond the cord stopper and routed towards sidewall as shown. The three (3) groups of wire should be tied along with the switch wires with a cable tie.
Handle
BLACK (POWER) WHITE (POWER) CORD STOPPER BLACK (JUMPER) WHITE (JUMPER)
NOTE: For general servicing, it is necessary to eliminate pinching of any wire during reassembly. After servicing any electrical component or electrical enclosure, the unit should be reassembled and checked for dielectric breakdown or current leakage.
ON / OFF SWITCH REPLACEMENT
Removal
1. Remove the dust cover to expose the electrical connections of the ON/OFF switch. 2. Remove the insulated black wire lead from switch. Note the location of the insulated lead when removing from switch. 3. Remove uninsulated black wire from switch.
WHITE (LIGHT)
Retaining Tabs Black (Insulated) Black
(Fig. 12)
YELLOW (LIGHT)
4. Remove the ON/OFF switch, (for ON/OFF switch replacement) by depressing the switch retaining tabs while pushing up out of the dust compartment at the same time.
WHITE (MOTOR)
Installation
1. When re-connecting lead wires to ON/OFF switch make sure the insulated lead is reconnected to its original location as shown in Fig.12.
GRAY (MOTOR/FUSE)
-4-
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