7. Errors and error remedying
53
Transferring all settings
a
b
(a)
New controller board
(b)
Old controller board
Procedure:
1. Remove the data memory module from the new (already
installed) CU electronics board (a) and place it aside.
2. Remove the data memory module from the old CU electron-
ics board (b) and insert it in the memory socket of the new
CU electronics board (a).
3. Switch on power supply. The new board runs with the "old"
settings.
When the system and product data memory module is replaced, the date and time infor-
mation will
not
be adopted (because this information is saved in the battery-powered
memory):
7.4.2 Replacing the IO electronics board
1. Disconnect voltage supply
and external circuits and open the cover at the electronics housing.
2. Remove the used connectors and remove the fastening screws (1), (3) and (4).
3. Remove the CU electronics board (2).
4. Remove the IO electronics board (5).
5. Install the new IO electronics board (5) and the other components in reverse order!
7.4.3 Replacing the display board
1. Disconnect voltage supply and external circuits and open the cover at the electronics housing.
2. Remove the used connectors and remove the fastening screws (6).
3. Take out the display board (7).
4. Install the new board in reverse order!