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 11 (click to view)
1-2. Installing HKCF-700 in CNU-700
1-2. Installing HKCF-700 in CNU-700
Confirmation of ROM version Be sure to check that the ROMs version for IC4 and IC5 on the AT-89/89A board in CNU-700 are V2.10 and higher. If ROM replacement is required, contact your local Sony Sales Office/Service Center.
1-2-2. Replacing PC Board/Harness
Parts required The following are supplied with the unit.
Description IF-624 Board RS-422 Harness (30P-30P) CNU-700 Harness (12P-15P) (with HKCF panel attached) PC Board Spacer Q�ty 1 1 1 1
1-2-1. Modifying AT-89 Board
If you install the HKCF-700 in the CNU-700 with the following serial number, modifying the AT-89 board is necessary prior to installation. Proceed as follows. Applicable Serial No. CNU-700 (UC) 10001 through 15080 CNU-700 (J) 30001 through 35015 CNU-700 (CE) 40001 through 45040 * It is unnecessary to modify the CNU-700 with the following serial number. CNU-700 (UC) 15081 and higher CNU-700 (J) 35016 and higher CNU-700 (CE) 45041 and higher Preparation Remove the front panel of the CNU-700 and pull the AT-89 board out of the third slot from the top. (Refer to Section 1-2-2, Steps 9 and 10.) Parts required The following are not supplied with the unit. Get them ready.
Description Board Connector (30P) P/N 1-561-772-00 Q�ty 2
1. Remove the two screws (PWH3 x 6) to remove the command connector assembly. 2. Remove the six screws (B3 x 5) to remove the rear panel. 3. Remove the two screws (PWH3 x 6) to remove the blank panel from the rear panel.
CNU-700 Command connecter assembly Rear panel B3 x 5 PWH3 x 6
PWH3 x 6
B3 x 5 Blank panel PWH3 x 6
Solder two board connectors (30P) at the traces of CN1 (D-3) and CN2 (F-3) respectively on the AT-89 board.
