Crown Audio FM1000A - Manual (Page 21)

3–5 Operation
3.2.2 DC Power Switch
The main on/off power switch located on the front panel of the power supply
controls high voltage output. (The control circuit activates this voltage.)
Illustration 3–5 DC Power Switch
Illustration 3–6 Interlock Switch
Interlock Switch
®
Power
I
O
Power Switch
W WARNING ARNING
Lethal voltages are still present on the AC Input Board !
So, handle with care.
3.2.3 Interlock Switch
This switch is located on the fan mounting bracket in the power supply. When the
top cover of the power supply is removed, the Interlock Switch interrupts the
power supply control circuit disabling the high and low voltage supplies.