10.2 Replacing the CPU board
NOTE:
Before carrying out the following operations, disconnect the equipment
from the line.
1.
Remove the plastic timer cover loosening the two sealing screws
placed on the top part. Pull the cover to release the locking pins.
To make the operation easier, disconnect all wires between wall plate
and cover. The flat cable connecting the CPU board and the Driver
board has to be removed from the connector on the CPU board.
2.
Remove the failed CPU board and replace it with the new one.
NOTE:
If the system is equipped with the wireless X-ray button, remove from the
failed CPU board the A6 Radio board (Figure 6-17) complete of cable X7
and exagonal spacer support and assemble it on the new CPU board as
described in paragraph 6.4.3.2, steps 3 and following.
3.
Connect all the connections cables between wall plate and cover;
close the timer again.
4.
Switch the system on and enter the setup procedure (chapter 8).
Check all configuration parameters.
NOTE:
It is possible to save the stored customized table, removing the EEPROM
from the old CPU to the new one.
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