HEIDENHAIN TNC 415 (259 9x0) Service Manual - Manual (Page 174)

SERVICE MANUAL TNC 415B/425
Page 169
Issue: 20.08.95
21.8 Exchanging the EPROMs
21.8.1 MOS Protection
To exchange the EPROMs MOS protection is indispensable, as otherwise
the EPROMs could be destroyed by static charge.
Observe the mark on the EPROMs (do not turn them by 180°); be sure not
to damage any components during the exchanged. Use an appropriate tool.
After the software exchange the logic unit must be marked with the new
NC-software number (see sections 5.1 and 5.2).
e.g. IC drawing punch
and insertion tool
21.8.2 EPROM Designation
Id.No. Location No. (e.g. IC-P1)
Index (software version)
PROCESSOR Board Id.No. 268 553 01
IC-P10
IC-P3
IC-P1
IC-P4
IC-P2 IC-P6 IC-P5
IC-P7
IC-P8
PLC
RUN-IN
Note:
With the current software version
IC-P3 / IC-P4 are not inserted.
RUN-IN: Internal test program
(does not have to be exchanged
together with the software)
CLP Board Id.No. 275 711 -- CLP Board Id.No. 268 927 --
Id.No. 275 705 --
IC-P9
software enable module
(option)
IC-S
BOOT
Id.No. 265 401 --
IC-S
Software-Freigabe-Modul
(Option) BOOT
IC-P9
IC-S IC-P9
software enable module
(option)