Troubleshooting - QUAD 99 Instruction Manual

sound quality becomes smoother and more natural.

TROUBLESHOOTING

If you suspect that your amplifier is not operating properly, here are a few
simple checks you should carry out before returning the unit to your dealer.
Before making any checks on system wiring, in particular AMPBUS cables,
please ensure the amplifier is switched off and the volume control set at
minimum.
If you are in any doubt as to the satisfactory operation of your Quad 99
S Y M P T O M
No front panel indication
when power is applied.
The amplifier front panel indicator
glows green but there is no
sound from either speaker.
You are getting the same
channel on both speakers.
The channels are reversed.
There is a large hum or other
unpleasant noise from the loudspeakers.
After playing for a while,
the amplifier switches off.
Every time the amplifier is turned on
the fuse blows or the light flashes red.
POSSIBLE CAUSE
Mains outlet faulty or not switched on.
Mains plug fuse or mains cable faulty.
The IEC plug has not been pushed in firmly enough.
The rear panel fuse has blown.
You have selected the wrong input channel on the
power amplifier.
Loudspeaker cables misconnected or faulty.
There is no source connected to your preamplifier or the
source has finished playing.
AMPBUS connections have been poorly made.
The cable between the amplifier RCA phono input and
the preamplifier is faulty (non Quad 99 systems).
You have selected the wrong input channel on the
power amplifier.
Loudspeaker cables misconnected.
AMPBUS connections have been poorly made.
RCA input cables misconnected (non 99 systems).
Signal cable to the amplifier faulty (non Quad 99
systems).
Faulty source equipment.
Faulty loudspeakers or loudspeaker cable.
Loudspeaker impedance too low and/or amplifier
playing too loudly and overheating.
Refer the matter to your dealer.
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