Remove The Control Pcb And The Charger - Kärcher BR 45/40 Service Manual

9.4.6 Remove the control PCB and the charger


Remove rear appliance cover.
1 Charger
2 Control board

Remove all connector plugs from the control PCB
and the charger.

Remove the entire sheet metal plate from the ap-
pliance.

Replace the control PCB or the charger.
Installation in reverse order
Note
If you cannot clearly determine whether the electron-
ics are defective in case of a malfunction, the battery
should be separated from the appliance for about 10
seconds.
This is necessary for the energy cells (capacitors),
which will support the processor voltage for a while,
to be able to drain completely in case of problems.
Switching off the key switch does not guarantee that
the supply voltage of the controller has been discon-
nected.
If the appliance works smoothly after that, the elec-
tronics are functioning and do not need to be re-
placed.
This problem can occur, e.g., if there has been an
electrostatic discharge.
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English 5.906-269.0 Rev. 00 (03/11)