Trouble Shooting - Studiomaster Professional DPA 2000 Owner's Manual

Trouble Shooting

Key to LED symbols:
GLOWING BLINKING
1) Indication:
Condition: Normal operation
Possible Reason:
The amplifier is in normal operation
2) Indication:
Condition: No power to the amplifier
Possible Reason:
The amplifier power switch may be off. The amplifier may not be plugged into the power receptacle. Confirm that the
AC outlet works by plugging in another device. If too many amplifier are used on one outlet, the building's circuit
breaker may trip and shut off power. An overload in bridge mode may cause tripping of main switch on front panel.
An amplifier which keeps shutting off may have a serious internal fault. Turn it off, remove AC power cord and get the
amplifier serviced by a qualified technician.
3) Indication:
Condition: Low output
Possible Reason:
Check if the level of the input signal is too low. Check the signal source is operating and the input cable is intact. The
channel volume control setting is not at desired level. Similar conditions may occur in PARALLEL and BRIDGE
mode.
4) Indication:
Condition: No Sound
Possible Reason:
The amplifier goes in Protect mode due to excessive input signal, speaker impedance mismatch or output short circuit.
Check the speaker impedance and speaker wiring for stray strands or breaks in the insulation. Reduce the volume
control, for desired output.
The amplifier might also go in Protect mode because of overloading or poor ventilation resulting into the rise in
temperature either of output devices or power transformer. Switch off the amplifier to cool down. Check if the fan is
working, proper ventilation is provided and output connections are as recommended. Similar conditions may occur in
PARALLEL and BRIDGE mode.
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OFF
PROTECT
CLIP
SIGNAL
POWER
PROTECT
CLIP
SIGNAL
POWER
PROTECT
CLIP
SIGNAL
POWER
PROTECT
CLIP
SIGNAL
POWER