Bose PowerShare PS404A User Manual

93
TROUBLESHOOTING
LED Fault Indications - PS404A and PS604A
POWER LED
Solid amber LED indicates an over-temperature fault
Solid red LED indicates a power supply fault
SIGNAL LED
All four LEDs will display solid red if a power supply fault is detected
LIMIT LED
Each LIMIT LED will individually display solid red if there is an EHF fault on that channel
LIMIT LED 1 & 2 will display solid red when the outputs are muted due to an amplier one fault
LIMIT LED 3 & 4 will display solid red when the outputs are muted due to an amplier two fault
All four LEDs will display solid red if there is a power supply fault
LIMIT
SIGNAL
1234
PowerShare
POWER
Problem What to do
No power •Turn on power. Green LED on front panel will be visible when power is on.
•Make sure the power cord is plugged in.
•
Power is on, but no
sound
•Make sure the input source is turned on.
•Verify that there is an input signal from the source.
•Check the cable connections from the source to the amplifier.
•Make sure the OUTPUT ATTENUATION controls are not turned down to mute.
• If a CC-1 zone controller is connected to the ControlCenter connector on the rear panel, make sure
the volume control on the zone controller is turned up.
• If a contact closure is connected to the MUTE connector on the rear panel, check the switch to
ensure the mute function has not been triggered.
•Make sure that loudspeaker taps are set correctly.
•Check that the amplifier has adequate ventilation. Improper ventilation could cause the amplifier
to go into thermal protection mode and no audio will be heard.
• Ensure that the output wiring is correct. A short circuit will cause the amplifier to go into
protection mode and no audio will be heard.
Power is on, but
sound is low
•Verify that the audio input source output is turned up to a nominal level.
•Check the cable connections from the source to the amplifier.
•Make sure the OUTPUT ATTENUATION controls are not turned down too low.
• If a CC-1 zone controller is connected to the ControlCenter connector on the rear panel, make sure
the volume control on the user interface is turned up.
•Make sure that loudspeaker taps are set correctly.
Sound is distorted •Verify that the SIGNAL LED on the front-panel is not red, indicating clipping. If it is red, reduce
the source output level, or increase the amplifier sensitivity to 12 dBu.
• If the input source signal is clean, verify that the loudspeakers are not overdriven or damaged.
Check the loudspeaker tap setting.
Unnatural sound •Verify that the proper EQ preset is selected for the loudspeakers being used.

Bose PowerShare PS404A Specifications

General

Purpose	-
On/off switch	Yes
Product color	Black
Connectivity technology	Wired
Audio output channels	4.0 channels
Peak power per channel	400 W
Signal-to-Noise Ratio (SNR)	100 dB
Total Harmonic Distortion (THD)	0.04 %
Ethernet LAN (RJ-45) ports	1
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	14 W

Weight and Dimensions

Depth	414 mm
Width	483 mm
Height	44 mm
Weight	6400 g