Troubleshooting - Bose PACKLITE A1 Manual

Troubleshooting

Problem
Power LED is not
lit; the amplifier
does not seem to
operate.
Power LED is
RED, not BLUE.
Signal LED is
flashing RED.
No audio, signal
LED is GREEN.
No audio, signal
LED not lit.
A hum or buzz can
be heard from the
loudspeaker.
What to do
• Be sure power switch is ON.
• Make sure the power cord is fully inserted into the unit and an AC outlet.
• Be sure the AC outlet is live. Try operating a lamp or other equipment
from the same AC outlet or test the outlet using an AC outlet tester.
• Amplifier is in the Protect mode:
– Thermal overload: Lower the level of the input signal. Be sure the
amplifier is on a hard, flat surface to aid in heat dissipation.
– Output is short-circuited: Check output connections/wires.
– Driving too many speakers in parallel: Make sure you connected no more
than two B1 bass modules to one A1 amplifier.
– Impedance is too low: Make sure you connected only one 4-ohm or up to
two 8-ohm speakers of other brands.
– Input level is too high: Lower the level of the input signal.
• The red light should no longer illuminate when a fault condition is
removed. In the case of thermal overload, the amplifier
may have to cool for a few minutes.
• The input signal is near limit. Lower the input level so the red
light flashes only occasionally, at peak volumes.
• Speaker not connected properly. Check that output connections
are correct and connectors are fully seated.
• Power not connected. Check the power LED. It will shine BLUE when
power is connected and the unit is turned on.
• No signal going into the amplifier. Check input connections and input
level.
• Replace input cable.
• If you are using a ¼" TS (unbalanced) cable, use a ¼" TRS cable
(supplied with the A1 amplifier) between the source device and the A1
amplifier.
• Plug the power cord of the PS1 or source device into the same AC
(mains) power circuit as the A1.
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