Identification Of Controls; Front Panel - NAD T 977 Manual Del Usuario

Seven Channel Power Amplifier T 977
1 2
1 StandbY button
·
Press this button to switch ON the T 977. The Standby LED indicator
will turn from amber to blue.
·
Pressing the STANDBY button again turns the unit back to standby
mode.
IMPORTANT NOTICES
· For the STANDBY button to activate, plug-in the supplied mains power
cord to a mains power source. Before connecting the plug to the mains
powers source, connect firmly first the other end to T 977's AC Mains
input socket.
· The preamplifier or controller connected to the T 977 should be switched
ON first before powering up the T 977.
2 StandbY led
· This indicator will light up amber when the T 977 is at standby
mode.
· When T 977 is powered up from standby mode, this indicator will
illuminate blue.
3 Soft clipping indicator
·
This indicator is illuminated blue if the rear panel SOFT CLIPPING
switch is set to ON position.
· Refer also to the item below about SOFT CLIPPING at the
IDENTIFICATION OF CONTROLS – REAR PANEL.
T977_eng_OM_v04.indd 5
SOFT
CLIPPING CH 1 CH 2 CH 3 CH 4
3 4
4 channel StatuS led
protect mode
If one or more Channel Status LEDs turn red, this indicates that the
protection circuitry of the T 977 had been engaged. Immediately press the
Standby button and then unplug the mains power cord from the mains
power source. Check if all speaker wires are connected correctly and that
none of the wires are damaged, causing a short circuit. Another cause may
be excessive heat build-up inside the amplifier. Make sure there is adequate
ventilation around the amplifier and that none of its ventilation slots, top
or bottom are blocked. After the amplifier has cooled down, it will function
normally again. In case one or more of the Channel Status LEDs remained
illuminated in red despite the checks mentioned above, immediately press
the Standby button and then unplug the mains power cord from the mains
power source. Have the unit inspected by a qualified service technician
before attempting to use it again.

IDENTIFICATION OF CONTROLS

CH 5 CH 6 CH 7
·
These LEDs indicate the status of each of the seven channels of
the T 977. When the T 977 is switched ON from standby mode, the
Channel Status LEDs will initially turn red and then eventually turn
blue.
· When the T 977 goes to standby mode via the front panel Standby
button or via the rear panel trigger source, the Channel Status LEDs
will light up red and then fade out.
· The Channel Status LEDs will turn red when one or more of the
internal seven amplifiers go to protect mode. The other amplifiers
that did not go to protect mode will continue to function as
indicated by their respective illuminated blue LEDs.

front panel

© NAD T 977
5
17/04/2012 9:28am