Superb rendition. Drawings (schematics) complete and unabridged. I do a great deal of vintage audio restoration. Documentation is essential for successful repairs. I have found sources over the years that offer good documentation, but rarely all that is necessary. Owner's Manuals has filled that void with complete and legible documentation. They have narrowed my "favorites" to a more manageable collection. This Denon manual in particular contained the latest revisions level, and offered alterations favorable to updating the item. The Illustrated Parts Breakdown (IPB) was well enough detailed to simplify part symbols and physical locations. You will not be disappointed!
very fast detailed and accurate hope to do business again
Text excerpt from page 10 (click to view)
5. To check the 3 Pin I/F After pressing � 7 � button, the following menu appears on the LCD.
PX-653 TEST Program Ver.2.21
7....RS-232C I/F Set the H/T on the I/O box. Select the I/F switch to 3 pin SIF. Press � Enter � key. This test is executed o n c e . In case you want to check this continuously, select aging test at test mode menu.
Set the H/T(DT-9000) , I/O box (DT-9060I/O) and loop back connector as follows;
Loop back connector
6. AGING TEST This test can be check the RS232C I/F and 3 pin I/F. When you select the aging test at test mode menu, you can check the I/F continualy. Each preparation is same for individual test.