HEIDENHAIN TNC 407 (243 020) Service Manual - Manual (Page 127)

SERVICE MANUAL TNC
Issue: 01
107
19.9 Exchanging EPROMs
19.9.1 MOS Protection
For the exchange of EPROMs MOS-protection is indispensable, as otherwise
the EPROMs could be destroyed by static charge. Moreover, all data should be
e.g. drawing punch
and insertion tool
backed up (see section 15.1).
Observe the mark on the EPROMs (do not turn them by 180”); be sure not
to damage any components during the exchange. Use an appropriate tool.
After the software exchange, the logic unit must be marked with the new
NC-software number (see section 14.1). The offset adjustment with code
number should be performed as well (see section 16.5).
19.9.1 EPROM Designation
Basic Location No. (e.g.
Processor Board TNC 415
CLP Board TNC 415
Index (software version)
Processor Board TNC 407
PLC-EPROM