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K6 K8 K10 K20 | SERVICE MANUAL

Remove the amplier cover by unscrewing all nine screws

(four in the front, two in the centre and three in the rear)

using a Phillips PH 0 screwdriver. (Fig. 2)

2. Opening the ampliﬁer cover:

Disconnect the amplier from the mains. If the amplier

has been connected to the mains in the last minutes,

please proceed with attention as the internal capacitors

bank could be charged and harmful!

Remove the side support steel bars, unscrewing the four

largest screws with a Phillips PH1 screwdriver. Then re-

move the three screws in the centre using a smaller Phil-

lips PH 0. (Fig. 1)

3. Discharging the Capacitors Bank:

Before proceeding in operating inside the amplier it

is necessary to check if the power rails are completely

discharged: the LEDs in (Fig. 3) should be off, this should

happen about 15 minutes after the amplier has been

switched off and disconnected from the mains.

(Fig. 1)

(Fig. 2)

(Fig. 3)

(Fig. 4)

If the LEDs are still on discharge the capacitors bank

by connecting a lamp of at least 40 W/230V to the

connectors highlighted in (Fig. 4).

powersoft K Series User Manual

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