It's great to be able to obtain a precious technical information for a real old equipment. The one I got helps me a lot in the area of wiring diagram to repair my antique. PDF gave me clear enough information to find out thr details. Thanks for giving me the oppotunity to be able to access to almost vanished informations.
great manual readable & easy to downlaod to be recommanded
Text excerpt from page 21 (click to view)
8. TO SAVE THE DATA TO OTHER UNIT
It is commonly necessary to save all data stored in the customer's unit before repairing it. For this purpose, you can transfer the data of the JD-6500 or C-320 unit to another unit using the following procedure. (1) To reset the receiving unit Please reset the unit used to receive the data from the customer's unit according to the method mentioned in section 3. (2) To connect transmission unit with receiving unit Please remove the covers of battery compartments from both the transmission unit and the receiving unit, and connect one with another as shown in the figures below:
