17
Repair
Replacing the EEPROM
All configuration data and the resident data base are stored on the EEPROM. Additionally these data are transferred
automatically to the EEPROM after each configuration.
If the display module needs to be exchanged, the EEPROM storage can be removed from the defect module and
can be inserted into the new module.
Switch off the mains voltage at the front-door station.
►
Open the front-door station.
►
Disconnect the display module from the mains voltage and pull
out all connecting plugs.
►
Deinstall the defect display module from the front panel.
►
Remove the EEPROM
(1)
.
►
Install the new display module into the front panel.
►
Plug the EEPROM on the pins of the new display modules.
Ensure the correct installation of the EEPROM into the dis-
play module. The component side
(2)
of the EEPROM must
be visible (fig. 34).
►
Connect the display module again.
►
Switch on the mains voltage. The data is transferred automatically
to the new EEPROM.
If the data transfer should be incorrect, press all 3 smart keys
simultaneously until the device restarts (after around 10
sec.).
Fig. 32: Deinstalling the EEPROM
1
2