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6-2
Troubleshooting and Maintenance
JBL
TROUBLESHOOTING
Note:
• The SDP-40 does not support MPEG input types.
• Some DVD players will produce audio artifacts
when switching audio formats.
THE UNIT DOES NOT POWER ON.
1. Attempt to power the unit on with both (standby) buttons,
the one on the front panel, and the one on the remote control.
2. Check the line cord to ensure a good connection between the
electrical outlet and the AC input connector. Make sure the
rear panel power switch is set to on. (See pages 2-4 and 2-7
for rear panel illustrations.)
THE REMOTE CONTROL DOESN’T WORK.
1. Make sure the front panel IR Receiver window is not
obstructed (see pages 2-2 and 2-6 for illustrations). The
remote control must be in line-of-sight with this receiver for
proper operation. If the unit is placed inside a glass cabinet,
smoked glass will reduce the range of the remote control.
2. Make certain the batteries are inserted correctly with the
proper polarity. Are the batteries low on power? When the
they are, the remote control will enter a low-voltage condition
that prevents it from operating the unit. Operation will be
restored when new batteries are installed.
THE UNIT IS ON, BUT THERE IS NO AUDIO.
1. Make sure the full mute setting is not activated. The
message “FULL MUTE ON” will appear in the top-left
corner of the on-screen and front panel displays when the full
mute setting is activated. Press the Mute button or adjust the
volume level to deactivate the full mute setting.
2. Increase the volume level to make sure it is set to an
audible level.
3. Check the STATUS menu to ensure a signal is coming into the
unit. (Press SHIFT, then STAT on the remote control to access
the STATUS menu.)
4. Make sure the associated power amplifier(s) are powered on.
THE UNIT IS ON, BUT THERE IS NO VIDEO.
1. Check the video cables, particularly the S-video cables, to
ensure good connections.
2. Check the VIDEO IN and COMPONENT IN parameters on the
INPUT SETUP menu (see pages 3-8 and 3-9). Make sure the
appropriate connector is assigned to the selected input.
DIALOG SOUNDS MUFFLED.
1. If the system does not include a center channel, make sure the
CENTER parameter on the CUSTOM SETUP menu is set to
NONE (see page 3-20).