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.
