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HtllJtNllAlN
DR JOHANNES
HEIDENHAN
GmbH
D-8225
Traunreut
'Tel.
108669)
31-O
SERVICE MANUAL TNC 151/155
Kundendienst
Page 47
Section
3.3
Software
Exchange
Caution:
When exchanging
the software
observe
the MOS
protection
procedures!
o The cover of the Control
can be removed after
unscrewing
the 5 cross-head
mounting
screws
(top side).
o To exchange the program,
the following
boards
- Main Processor
Board
- CLP Processor/Graphics
Board
have to be removed from the assembled Control.
Thereto,
lift
the board ejector
keys and press
outwards,
pull
out board from above and lay onto
MOS
protection
mat.
6 Push screwdriver
blade
carefully
between EPROM and socket,
timove
EPROM with
extraction
tool
and place
onto MOS
protection
mat.
0 Insert
EPROM into
appropriate
socket using insertion
tool.
Igortant:
- When exchanging
EPROMs, observe
the position
number (second to last
digit
of the programmed
EPROM Id. NO.
- The EPROM package index must point
in the same
direction
as the ICs on the board.
- Visually
check if
the EPROMs are contacting
their
respective
sockets
after
an exchange.
- After
the software
exchange has been concluded,
the Id.-Nos.
c )f
the NC and PI.C software
have to be changed.
The description
plate
for
the software
numbers is found on the rear of the
control
under
the type-plate.
Control
Id.Na.
\
NC Software
No. -
PLC
Software
No. -
-SAM
memory of the Memory Board is unbuffered
during
the EPROM (software)
exchange.
The machine parameters
and
any stored
user-program
are therefore
erased!
For continued
operation,
the
machine parameters
have to be
re-entered
into
memory.
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