HEIDENHAIN TNC 407 (243 020) Service Manual - Manual (Page 119)

31-O
SERVICE MANUAL TNC
Issue:
01.09.1995
Page 99
19.5
19.5.1
19.5.2
Exchanging the PLC and Graphics Board of
MOS-Protection and Labelling of the Cables
(see
section 19.1
Dismounting the PLC and Graphics Board
Switch off the main switch at the machine tool.
Loosen the connectors at the PLC and graphics board (X41
(Pin layout: see section
LE 407: Undo lock and open logic unit
LE 415: Remove knurled screws
Undo lock of TNC 415
Remove knurled screws of
TNC 407 and lift out the
6074
PLC and graphics board
Disengage internal connectors
connector
is disengaged automatically)