Troubleshooting - Sony MEX-BT3950U Operating Instructions Manual

Power amplifier section
Output: Speaker outputs
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W × 4 (at 4 ohms)
General
Outputs:
Audio outputs terminal (front/rear)
Subwoofer output terminal (mono)
Power antenna (aerial) relay control terminal
Power amplifier control terminal
Inputs:
Telephone ATT control terminal
Remote controller input terminal
Antenna (aerial) input terminal
MIC input terminal
AUX input jack (stereo mini jack)
USB signal input connector
Power requirements: 12 V DC car battery
(negative ground (earth))
Dimensions: Approx. 178 × 50 × 179 mm
× 2 × 7
1 1
(7 / / in) (w/h/d)
8 8
Mounting dimensions: Approx. 182 × 53 × 162 mm
× 2 × 6
1 1 1
(7 / / / in) (w/h/d)
4 8 2
Mass: Approx. 1.2 kg (2 lb 11 oz)
Supplied accessories:
Card remote commander: RM-X176
Parts for installation and connections (1 set)
Optional accessories/equipment:
USB connection cable for iPod: RC-100IP
External microphone: XA-MC10
Your dealer may not handle some of the above listed
accessories. Please ask the dealer for detailed
information.
Design and specifications are subject to change
without notice.

Troubleshooting

The following checklist will help you remedy
problems you may encounter with your unit.
Before going through the checklist below, check the
connection and operating procedures.
If the problem is not solved, visit the following
support site.
Support site
Customers in Latin America:
http://esupport.sony.com/ES/LA/
Customers in Pan Asia:
http://www.sony-asia.com/section/support
http://www.sony-asia.com/caraudio/
General
No power is being supplied to the unit.
• Check the connection or fuse.
• If the unit is turned off and the display disappears, it
cannot be operated with the remote commander.
t Turn on the unit.
The power antenna (aerial) does not extend.
The power antenna (aerial) does not have a relay box.
No sound.
• The ATT function is activated, or the Telephone ATT
function (when the interface cable of a car telephone
is connected to the ATT lead) is activated.
• The position of the fader control "FADER" is not set
for a 2-speaker system.
• The Bluetooth audio device is in pause.
t Cancel pause.
No beep sound.
• The beep sound is canceled (page 29).
• An optional power amplifier is connected and you are
not using the built-in amplifier.
The contents of the memory have been erased.
• The RESET button has been pressed.
t Store again into the memory.
• The power supply lead or battery has been
disconnected or it is not connected properly.
Stored stations and correct time are erased.
The fuse has blown.
Makes noise when the position of the ignition
is switched.
The leads are not matched correctly with the car's
accessory power connector.
During playback or reception, demonstration
mode starts.
If no operation is performed for 5 minutes with
"DEMO-ON" set, demonstration mode starts.
t Set "DEMO-OFF" (page 29).
continue to next page t
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