Simple Troubleshooting; Receiver - JBL JSR-400 Service Manual

Dolby Pro-Logic A/V Receiver
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Symptom
If there is no sound from any of
the speakers, check the following:
If most of the sound comes
from the center-channel
speaker, with little or no
information from the surround
channels, note the following:
If there is no sound from the
surround speakers or it is very
low, check the following:
If there is no sound from the
center speaker, check the
Following:
If you are having trouble
picking up radio stations,
check the following:

SIMPLE TROUBLESHOOTING

Cause and Remedy
+ Make sure the receiver is plugged into an active AC wall outlet.
+ Push "Speakers" button on the receiver.
+ Make sure there is a source – for example, a VCR or television – hooked up to the
VCR or tape/aux input jacks on the receiver.
+ Make sure that the program material is playing.
+ Recheck the hookup connections.
+ Although most of today's televisions are equipped with stereo audio output jacks,
some stereo televisions have poor audio sections and are unable to provide a Dolby
Pro Logic encoded signal. In the unlikely event that you experience this problem,
connecting the audio outputs from your Hi-Fi VCR, laser disc player, DVD player or
satellite receiver directly to one of the inputs on the receiver will provide a proper
audio signal and allow you to enjoy true Dolby Pro Logic surround sound.
+ Check all connections between amplifier and each of the speakers.
+ Raise the surround volume from the remote control.
+ Make sure the TV show or movie you are watching is recorded in Dolby Surround.
+ Make sure Dolby Pro Logic is engaged.
+ Make sure that the processor is in the Pro Logic, or 3 Stereo mode. If it is in
Phantom or Stereo mode, the center speaker will not play.
+ Check the connections between the receiver and the center speaker.
+ Make sure the antenna is hooked up properly.
+ Depending on your distance from the station's transmitter, you may need to install an
FM antenna on the roof or in the attic.
JSR-400
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