15. Cleaning and maintenance
Always observe the following safety instructions before cleaning or servicing the amplifier:
Live components may be exposed when the housing is opened or components are removed.
The device must be disconnected from all power supplies before carrying out any servicing or repair work.
Capacitors inside the device may still carry a voltage when they have been disconnected from the power
supply.
Repair work must only be done by qualified technicians who are familiar with the potential hazards and the
relevant regulations.
a) Cleaning
Never use aggressive detergents, rubbing alcohol or other chemical solutions, as these may damage the
housing or prevent the product from functioning properly.
• Always disconnect the product from the power supply before cleaning it.
• Use a dry, lint-free cloth to clean the product.
b) Changing the fuse
If you need to replace the fuse, only use fuses of the specified type and rated current (see "Technical data" for details).
Never attempt to bridge or repair the fuse holder.
1. Unplug the mains plug from the mains socket and disconnect the power cord from the power connector (15).
2. Carefully remove the fuse holder and the defective fuse from the power connector (15) using a suitable screw-
driver.
3. Remove the defective fuse and replace it with a new fuse of the specified type.
4. Carefully push the fuse holder with the new fuse back into its position in the power connector (15).
5. Once you have installed the new fuse, reconnect the device to the mains.
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