HEIDENHAIN TNC 306 Service Manual - Manual (Page 101)

SERVICE MANUAL TNC 306/360
Page 94
HEIDENHAIN Service
19.3 Exchanging the PROCESSOR BOARD
19.3.1 MOS-Protection, Software, Data Backup and
Labelling of the Cables (see section 19.1)
19.3.2 Dismounting the PROCESSOR BOARD
a) Switch off the main switch at the machine tool.
b) Loosen the connectors at the PROCESSOR BOARD (X1 to X12).
(if required, loosen also the screw terminals at the PLC I/O board)
Pin layout: see section 6
c) Undo the locks and open the LOGIC UNIT
d) Disengage internal connectors