3 exchanging the processor board – HEIDENHAIN TNC 415 (259 9x0) Service Manual User Manual
Page 161
SERVICE MANUAL TNC 415B/425
Page 156
Issue: 20.08.95
21.3 Exchanging the Processor Board
21.3.1 Observe the exchange instructions (section 21.1)!
21.3.2 Dismounting the Processor Board
a) Switch off the main switch on the machine tool.
b) Disengage the connectors on the processor board (X21, X22, X23).
c) Undo the lock and open the logic unit.
Undo lock
d) Disengage internal connectors
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