Question about Pioneer DEH-P2900MP CD Receiver /AM/FM/MP3/ CD Player

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FM tuner sound fluctuates when car is moving

HI, i am facing a problem with fm tuner, the mp3 is working fine.... the problem is when the car is stationary the fm sound is crystal clear....as soon as i accelerate and the car moves the fm sound goes up and down(fluctuates). This does not happen with the mp3 sound. kindly help.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 108 Answers

SOURCE: no sound

you simply have a speaker shorting in your car. Either an old speaker with a bad voice coil (short) or a speaker who's contact(s) are touching metal. This type of short or grounding will cause the internal audio amplifier to shut off to protect the radio's output circuit. To diagnose which speaker is the culprit, you'll need to disconnect all speaker leads from the radio and one by one re-connect them until the output shuts down again. The safe way to check is with a voltmeter. If you connect one side of your voltmeter to ground and test each speaker wire lead for continuity, you'll hear an audible "beep" whe you find the grounded wire/contact. A professional car audio shop can diagnose this for you if you're still having difficulty. Hope this information was helpful.

Posted on Sep 28, 2008

  • 124 Answers

SOURCE: SETTING CLOCK FOR PIONEER Deh p49001b' CD AM/FM/

shut it off then hold the function button

Posted on Dec 27, 2008

  • 341 Answers

SOURCE: I have a DEH-P7900BT. It was working very well for

I would check both of the power wires for the unit. There is a yellow one and a red one. The yellow one always has power regardless of the position of the ignition switch. The red one only gets power when the ignition switch is in the on position. Also does this only happen when the vehicle is in motion or does it happen just sitting and listening to the stereo? It also could possibly be the ground wire not getting a good connection. Make sure the ground wire is tightly connected to something that is metal. Good luck.

Posted on Jul 18, 2009

raklein62
  • 360 Answers

SOURCE: There is no sound comming from My deh-27mp (on

Sounds like you blew both channels out. It is possible that you have a battery problem, and not sourcing enough voltage or current to operate the device. If service Tech say's he can't find nothing wrong then recheck your battery connection, and have Auto Zone check your alternator. Hope this helps!

Posted on Oct 21, 2009

  • 8 Answers

SOURCE: HOW DO YOU SET THE

See instructions below:
----------------------
Initial Settings
Adjusting initial settings
Using the initial settings, you can customize
various system settings to achieve optimal performance
from this unit.

1 Press SOURCE and hold until the unit
turns off.
2 Press FUNCTION and hold until function
name appears in the display.
3 Press FUNCTION repeatedly to switch
between the following settings:
CALENDAR (date and clock)—
WARNING TONE (warning tone)—AUX1 (auxiliary
input1)—AUX2 (auxiliary input2)—
DIMMER (dimmer)—S/W CONTROL (rear
output and subwoofer controller)—
DEMONSTRATION (feature demo)—
EVER-SCROLL (ever scroll)
Use the following instructions to operate each
particular setting.
# To cancel initial settings, press BAND.
# You can also cancel initial settings by holding
down FUNCTION until the unit turns off.

Setting the date and clock
Use these instructions to set the clock.
1 Press FUNCTION to select clock.
2 Press c or d to select the segment you
wish to set.
Day—Month—Year—Hour—Minute
As you select segments of the clock display
the segment selected will blink.

3 Press a or b to set the date and clock.
Pressing a will increase the value of the selected
segment. Pressing b will decrease the
value of the selected segment.
-----------------------
http://www.pioneerelectronics.com/pio/pe/images/portal/cit_11221/415128381DEHP4900IBOperationManual0216.pdf

Posted on Aug 20, 2010

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