HEIDENHAIN TNC 415 (259 9x0) Service Manual - Manual (Page 160)

SERVICE MANUAL TNC 415B/425
Page 155
Issue: 20.08.95
c) Loosen the 4 mounting screws on the logic unit
d) Remove the old logic unit and insert the new logic unit.
21.2.3 Mounting the Logic Unit
The logic unit is mounted in the reverse order that is was dismounted.
a) Insert and secure the logic unit.
b) Engage the connectors.
*
Observe that no connectors are switched!
c) Switch on the main switch.
d) Read in the machine tool data (machine parameters, PLC program, NC programs and tables) that have
been backed up before the exchange.
e) Enter the pre-set values and the supplementary operating modes from the table in section 21.1.4
(before traversing the reference marks).
f) Offset adjustment with code number (see section 18.5).
Exchange is now finished.