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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.
Disassembly and Reassembly > EEPROM Data Backup and Write
5-4 EEPROM Data Backup and Write
Perform this work whenever you replace the MAN circuit board on which the EEPROM is mounted. Create a backup �le of the data in EEPROM to be replaced in a PC, and write the backup �le to new EEPROM: Some adjustment items that are performed after replacement can be omitted. Refer to �6-3-2 List of Adjustments Needed After Replacing Major Components� for adjustment items that can be omitted. Information: It may be impossible to back up the data in EEPROM to be replaced, depending on the status of fault: In such a case, replace the MAN circuit board, and then perform �6-4-1 Initial Data Write�.
(1) Preparations
1) Open the LCD monitor. Insert a �ne-tipped �at-bladed screwdriver into the groove in adjustment cover, and remove the cover from L case in the direction of the arrow: Be very careful not to scratch the cover or L case with screwdriver 2) Connect the DVD video camera/recorder, jig/tool and power supply as shown in Fig. 5-4-1. Refer to �6-1-2 List of Jigs and Tools used when Creating Reference Data� for details on jig/tool and power supply in the �gure. 3) Copy the adjustment software to HDD of PC. Refer to �6-1-6 Copying or Deleting Adjustment Software� for copying. 4) Start the adjustment software in order to display the adjustment menu screen on PC display. Refer to �6-2-5 Starting and Terminating Adjustment Software� for how to start the software.
Caution
It is very dangerous to perform any work with the DVD video camera/recorder disassembled, since the DVD video camera/recorder has a laser-emitting block and high-voltage circuits: Do not remove any parts other than the adjustment cover.
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