Canton DM 101 Инструкция онлайн [64/72] 536678

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Problem Possible cause Solution

DM system hums. 1. Signal cable from source device to DM system

too long (AUX).

1. Use shorter signal cable.

2. Signal cable is not shielded or shielding has

been damaged (defective).

2. Exchange the signal cable by a shielded one.

3. Ground loop (ripple pickup) generated. 3. A ground loop can be generated when two or more

devices connected via a signal line (cinch) are plugged into

separate sockets (e. g. amplifier and computer). Plug all

safety class I devices (with a safety plug) connected to the

DM system into one multiple outlet stripe.

4. Another piece of equipment on the same

circuit has no interference suppression

(e. g. fridge).

4. Switch off possible sources of interference to test; unplug

the device concerned to see if the humming noise disap-

pears or connect the source of interference to a different

circuit (L1, L2 or L3). (Where necessary take advice from

your electrician) Insert a special “sheath current filter”

(available from specialist retailers) between the amplifier

and the DM system to eliminate the humming. Turn the

power plug round to reduce the so-called hum voltage

(particularly important if the source device is not earthed).

The DM system

switches to the BT

input inadvertently.

This can happen when your mobile device produces

system tones e.g. typing on the keyboard.

1. Deactivate the SEL function (MAN).

2. Deactivate the system tones on your mobile end device.

The DM system

switches on

inadvertently.

This can happen when your mobile device produces

system tones while e.g. typing on the keyboard.

Deactivate the AUT function (OFF).

The BT input cannot

be selected using the

“Input” keys.

The SEL function is activated (AUT). In this case the switching process happens automatically as

soon as the DM system detects an audio signal from the mobile

end device.