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Perfect copy of the service manual. you can enlarge every page, and it comes up
with all details.
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It´s very very nice manual with all, what i need. Original in good quality. Very fast business. Very much thanks...
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Purchased the manual that I was looking for at a great price and could download it easily.. Great service experience and for future purchases I plan to use the site.
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Exactly what was needed to assess the product - excellent value and great service
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A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
9. TECHNICAL DESCRIPTION
The Peak Detector (explanation about Front L CH) 1) First stage of QG01 <NJM4558DD> (on PG01) functions for comparator. 2) The input signal voltage at JE01 <INPUT Front L> (on PE01) is sent to the 3 pin of QG01 by way of CG01 (on PG01) and RG01 (on PG01), part of Speaker Output voltage is sent to the 2 pin of QG01 by way of RN55 (on PT01), CG05 (on PG01) and RG06 (on PG01). 3) The 2 pin voltage is same to the 3 pin until about 1.5V input voltage at JE01. Therefor the 1 pin of QG01 output voltage is 0V. 4) When input voltage at JE01 is more than 1.5V, Speaker Output voltage reaches at clipping level and the 2 pin voltage is different from the 3 pin. 5) Then some voltage appears at the 1 pin of QG01. 6) Negative voltage is taken out by DG01 (on PG01) and DG02 (on PG01), then QG02 <2SA608SP/ETC> (on PG01) becomes ON and PEAK LED turns on. Notice: The PEAK LED turns on little in usual operation, This turns on when input voltage at JE01 becomes 1.5V over and Speaker Output voltage is more than 36V.
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