3 Operation
3.3 Indicators
Your amplifier has five front panel indicators. First, a power indicator behind the front panel becomes visible when the unit is turned on and has power. A signal indicator for each channel (Figure 3.2 ) flashes when there is output from the amplifier. The IOC (Input/Output Compara- tor) indicators work like sensitive distortion meters and flash when the amplifier causes any distortion of 0.05% or more. The IOC indica- tors typically glow for about one minute after the AC power is turned off.
3.4 Controls
A power switch and detented level controls are located on the front panel. When you power up the amplifier, remember that the unit does not have a
3.5 Fuse Replacement
The AC mains fuse is located on the back panel beside the power cord. This fuse will not blow unless something is wrong. Before replacing
the unit’s fuse, you should be sure to fix the source of the problem. If the problem is not immediately apparent, the unit probably needs to be serviced by a qualified technician.
WARNING: Always unplug the amplifier from the AC mains before removing the fuse.
To replace the fuse, turn off the power switch and disconnect the power plug from the AC mains. Unscrew the fuse holder cap (shown in Figure 3.1, back view) and remove the fuse.
Install appropriate fuse:
100 or 120 volt mains: 2 Amp type 3AG.
North American 200, 220 and 240 volt mains: 1 Amp type 3AG.
European 220 or 240 volt mains: 1 Amp IEC type T, time lag, low breaking capacity.
Then, simply resecure the fuse holder cap and reconnect the AC mains.
IMPORTANT: Never install a fuse that has a higher current rating than the rec- ommended value.
IMPORTANT: The 3AG and IEC fuses are different physical sizes and require dif- ferent holder caps. The 3AG and IEC fuses should not be exchanged even though they are the same value.
.
D Series Power Amplifiers
Figure 3.2
Indicators and Level
Controls
page 12 | Operation Manual |
