SWITCHING POWER SUPPLY CIRCUITRY (ALS-600SPS)
Line Voltage
The input AC line voltage for the ALS-600SPS can be changed by moving jumpers
located at the front of the unit under the current and voltage meter. The ALS-600SPS is
factory wired for 120 VAC operation unless otherwise indicated.
Warning: Never unplug the power cable from the amplifier while the power supply
is connected to the power line. AC power line voltage is present on the
power cable connector pins.
Warning: Never remove the cover of the power supply while it is connected to the
power line.
Refer to the picture (shown in factory wired 120V position ) for the proper location of the
jumpers. The 120V position (A5 to A6 and A2 to A1) will allow the power supply to
work from 90-135 VAC. The 240V position (A5 to A4 and A2 to A3) will allow the
power supply to work from 185-260 VAC. To change the power supply from 120V to
240V, unplug the connector from A6 and install it on A4 then unplug the connector
from A1 and install it on A3.
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