Checks and repairs on electrical components
26
Replacing the circuit board
WARNING
Risk of injury from electric shock caused by inexpert work on
the electrical equipment.
Disconnect the mains plug from the socket.
Have work on electrical equipment carried out only by
specialist personnel who are qualified for these tasks.
To replace the circuit board, proceed as follows:
Move the unit into the repair position for the electric control, see from
page 24.
Release all cable connections on the defective circuit board.
Release the screwed connection (A) of the defective circuit board with a
crosstip screwdriver.
Remove the defective circuit board from its housing.
Place a functioning circuit board into the housing.
Fix the circuit board with a crosstip screwdriver.
Reinstall all cable connections on the circuit board according to the
applicable wiring diagram, see appropriate spare parts list.
Mount the cover of the electric control.
