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FOR UNITS 155, 175 & 195:
Procedure:
1) Before replacing the board (A3), make sure that the unit is switched off (“Power” LED
- red - is Off).
2) Disconnect completely all wires and connectors from the board.
3) Remove the PCB from the spacers
4) Take out from the old board the EEPROM and possible wire jumpers.
5) Plug the EEPROM (and possible jumpers) on the specific socket of the new board. Respect position of the
EEPROM on its socket. Be careful when handling the EEPROM, as its pins can be easily bent.
EEPROM alarm LED
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