Philips CMQ405 - annexe 1 Manual page 10

To keep the warranty valid, never try to repair
the system yourself.
If you encounter problems when using this
apparatus, check the following points before
requesting service. If the problem remains
unsolved, go to the Philips web site
(www.philips.com/welcome). When you
contact Philips, ensure that the apparatus
is nearby and the model number and serial
number are available.
The connected car audio is not turned on.
The fuse is blown. Replace the fuse with
a new one.
The input level is not set correctly(see
"Adjust input level").
The speaker terminals are short circuited.
Check the speaker connections.
The amplifier is overheated. Cool down
the amplifier before use.
The amplifier is overloaded.
The input level is not set correctly (see
"Adjust input level").
The thermal protector is activated.
Reduce the volume.
The ventilation outlet is blocked. Remove
any obstructions from the outlet.
The power connecting wires are installed
too close to the RCA pin cords.
The ground wire is not securely
connected to a metal point of the car.
Negative speaker wires touch the car
chassis.
Place the amplifier in a well ventilated
location.
Use speakers with suitable impedance:
2-8 ohm (stereo), 4-8 ohm (bridged).
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