Parasound
®
Z Custom
™
Zpre3
Owner’s
Manual
Page 13
Troubleshooting
When the unit turns on the volume always jumps to the same setting
- The “Turn On Volume” feature has been activated. See page 12 on instructions on how
to turn off this feature. This can only be done using the remote control.
There is no sound from input 4
- Input 4 is shared with the front panel Aux Input. When a plug is inserted into the front panel
Aux jack the rear panel Input 4 is disconnected. To use both the Input 4 and the Aux Input
you must unplug the front panel Aux cable when not using it.
When I use the Bypass Input the sound is very loud and cannot be turned down
-
The Bypass input should never be connected directly to a source component (CD, DVD, Tape deck,
etc.). The source connected must have its own volume control and that will be used to adjust the
volume level. See page 7 for more information.
The sound is distorted and weak
-
Make sure the gain of the power amp is not set too low.
-
Are you trying to use P 5 with a turntable? Make sure you have set the phono selector switch to
the correct cartridge type. Is the turntable's tracking force adjusted correctly for its cartridge?
-
Make sure the stereo power amp’s stereo/mono switch is set to stereo.
I can hear a hum or buzzing noise from my speakers
- Cable TV is the most common source of hum or buzzing noise in a system. If you have a cable TV box
connected to your audio system temporarily remove the incoming cable signal from the Cable TV box. If
the hum goes away the problem is with the cable TV ground. You will need a cable TV ground Loop
Isolator which is an inexpensive device that attaches between your incoming cable and the Cable TV box.
- Light dimmers can cause noise in your audio system. Try turning lights that are controlled by dimmers all
the way off. If the hum goes away the problem is electrical noise the dimmers introduce into your home’s
AC power.
- Ground loops are also a common cause of hum and buzzing noise. Finding a ground loop is a process of
elimination. Unplug your source components one at a time. When the hum goes away you’ve identified
the source of the ground loop. You might be able to stop the hum by attaching a wire from the chassis of
the offending component to the chassis or ground screw of your preamplifier.
