HEIDENHAIN TNC 415 (259 9x0) Service Manual User Manual
Page 162
SERVICE MANUAL TNC 415B/425
Page 157
Issue: 20.08.95
e) Loosen/remove fixing screws
Remove
knurled screw
Loosen
fixing screws
Remove
knurled screw
Loosen
fixing screws
f) Lift out the processor board; exchange the EPROMs, if required
(see section 21.8). Insert the new board.
21.3.3 Mounting the Processor Board
The processor board is mounted in the reverse order that is was dismounted.
a) Insert and secure the processor board.
b) Engage the connectors.
*
Observe that no connectors are switched!
c) Close the logic unit and the lock.
d) Switch on the main switch.
e) Read in the machine data (machine parameters, PLC program, NC programs and tables) that have been
backed up before the exchange.
f) Enter the pre-set values and the supplementary operating modes from the table in section 21.1.4
(before traversing the reference marks).
g) Offset adjustment with code number (see section 18.5).
Exchange is now finished.
*
Warning!
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.