HEIDENHAIN TNC 407 (243 020) Service Manual User Manual
Page 116
SERVICE MANUAL TNC
Issue:
01.09.1995
Page 96
Loosen/remove the fixing
Remove
knurled screw
Loosen fixing sc
Loosen
fixing screws
Remove
knurled screw
Lift out the processor board; exchange the EPROMs, if required (see section 19.9).
Insert the new board.
19.3.3 Mounting the Processor Board
The processor board is mounted in the reverse order that is was dismounted
a) Insert and secure the processor board.
Engage the connectors.
Observe that no connectors
switched!
Close the logic unit and close the lock.
Switch on the main switch.
Read in the machine tool data that have been backed up before the exchange
(machine parameters, PLC program, NC programs and tables).
Enter preset values and supplementary operating modes from the tables in
(before ref. mark traverse).
Offset adjustment with code number (see section 16.5).
Exchange is now finished
NOTE:
Send and store the boards only in the
original packaging that protects them from acquiring
static charge. Never use conventional plastics to wrap the boards in.