Silvercrest SPB 5.2 A1 - Manual (Page 12)

SilverCrest SPB 5.2 A1
10 - English
Maintenance/cleaning
Repair work is required if the device has been damaged, for example, if the
device housing is damaged, liquids or objects have got inside the device, or if
the device has been exposed to rain or moisture. Repair work is also required if
the device does not work properly or has been dropped. If you notice any
smoke, unusual noises or smells, disconnect all cable connections immediately
and remove the optional USB mains adapter from the power socket. In these
cases, you must not continue to use the device until it has been checked by a
specialist. All repair work should only be carried out by qualified specialists.
Never open the housing of the device. Clean the device using a clean, dry
cloth and never use abrasive liquids. Do not try to open the housing of the
device, as this will void your guarantee.