Motorola DCP501 ユーザーズマニュアル

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112 Troubleshooting 
DCP501 User Guide 
 
 Problem 
Possible 
Solution 
There is no sound 
or very little sound 
from the speakers. 
 
Check to make sure that each speaker has been properly connected to the 
speaker output jacks on the rear panel of the DCP501. 
 
Check that the speakers are working by utilizing the Test Tone function as 
described in the “Operation” section. 
 
Verify that the DCP501 has not been placed in MUTE mode. 
 
Check that the volume control on the DCP501 has been adjusted to an 
appropriate listening volume. 
 
Verify that the DCP501 is set to the correct source (CATV, VCR, DVD, Tape, 
etc). 
 
If the front panel displays O V E R L O A D , one of two things has happened: 
If the DCP501 detects the speakers have a short circuit, it shuts down 
the amplifiers. Switch the DCP501 off, remove the short circuit, and turn 
the DCP501 back on. The DCP501 should now work as normal. If 
O V E R L O A D  is still displayed, a short circuit condition remains. 
If the maximum amplifier output power is exceeded, the DCP501 shuts 
down the amplifiers. Turn down the volume a little and switch the 
DCP501 off and then switch the DCP501 back on and the DCP501 
should now work as normal. If O V E R L O A D  is still displayed, turn the 
volume down some more. 
There is no sound 
or very little sound 
from the center 
speaker. 
 
Check that the center speaker has been properly connected to the DCP501. 
 
Check that the speaker is working by utilizing the Test Tone function as 
described in the “Operation” section. 
 
The DCP501 may be set to Stereo mode. Select one of the surround sound 
audio modes (Dolby Digital, Dolby Pro Logic II, dts) and listen for output. 
 
Verify that the CENTER selection in the SPEAKER SETUP menu is not set to 
NONE as defined in the “Operation” section. 
 
Adjust the volume control of the DCP501 to an appropriate level. 
There is no sound 
or very little sound 
from the surround 
speakers. 
 
Check that the surround speakers are properly connected to the DCP501. 
 
Check that the speakers are working by utilizing the Test Tone function as 
described in the “Operation” section. 
 
The DCP501 may be set to Stereo mode. Select one of the surround sound 
audio modes (Dolby Digital, Dolby Pro Logic II, dts) and listen for output. 
 
Verify that the SURROUND selection in the SPEAKER SETUP menu is not set 
to NONE as defined in the “Operation” section. 
 
Adjust the volume control of the DCP501 to an appropriate level. 
AUDIO 
There is no sound 
or very little sound 
from a powered 
subwoofer. 
 
Verify that the subwoofer is properly connected as defined in the “Installation” 
section. 
 
Verify that the SUBWOOFER? setting in the SPEAKER SETUP menu is 
configured as defined in the “Operation” section. 
 
Verify that the subwoofer is properly connected to an AC outlet and powered 
on as applicable. 
 
Verify that the volume/gain control on the subwoofer is adjusted accordingly as 
applicable.