AVSL 172.018 QA2400 - Manual (Page 3)

No user serviceable parts inside, refer all servicing issues to qualified service personnel.
Clean case with a lint-free dry or slightly damp cloth, keep ventilation grille and fans clear of debris.

Check mains for correct voltage as indicated near to the IEC mains inlet on the rear panel. Connect to mains
supply using the IEC cable provided.

Connect the outputs A+B to speakers via speaker connectors, jack or binding posts, ensuring that the minimum
impedance is no lower than 4 Ω per channel
 When using 8Ω speakers, connect the speakers in pairs to each other and then connect one of each pair to an
amplifier channel output.

Connect the mixer or audio source to either the combo or RCA input sockets

With channel A+B levels down, switch the power on.

Gradually increase channel levels and check for sound from speakers.

If there is no sound, turn down channel levels, switch off and disconnect mains and check connections – if front
panel PROTECT LEDs are lit, refer to qualified service personnel.
NO OUTPUT -
Check mains power is on and fuse is OK
Check leads and connections
Check PROTECT LEDs are not lit
Check speakers are working on another amplifier
DISTORTED OUTPUT -
Reduce the input signal level. Ensure that the amplifier output level is within the maximum rating of the
connected speakers and gradually increase the input signal, ensuring that the signal is clean and free from
distortion.
If protect mode is active, refer to qualified service personnel