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A complete and very usefull service manual with all details.
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Text excerpt from page 8 (click to view)
3.
DATA TRANSFER
JD-3000 can transfer customers data to other JD-3000 with memory protection only when replacing the LCD or the outer case.
1) Turn the power switch off and set up wiring condition as follows.
P1
P1
P2 P3
P2 P3
P1 OO VDD OO P2 O TR
P3
VDD
VDD
DISPLAY 2) Press the reset button of the customer's machine. 3) Press the reset button of the slave machine. 4) Short the TR pad of the customer's machine. 5) Short the TR pad of the slave machine. 6) Press the "CAPA" button of the customer's machine. 7) Press the "SET" button of the slave machine. 8) Press the "SET" button of the customer's machine. 9) Several minutes later "END" will appear on the display of both machine. V "NG" will appear on the display when data transfer fails. RESET? RESET? RECEIVE RECEIVE TRANSMIT No Display No Display
