Question about Dual XD-7500 CD Player

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Car head unit cdplayer/radio

I connected my xd7500 head unit and i have a problem. When i go to turn it on (pwr button) i get nothing. But when i press the eject button it will open up and recieve cd's. How do i get it so i have power to the whole unit? the wires are connected right. Please help me.

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Hi. You need to check a few things. make sure you have power on both the red and yellow wire with the key on. If only one has power the radio will not work. also make sure that you have a good ground connection on the black wire.. if nothing works yes you probhably have a bad radio. the dual brand radios are notorious for poor solder connections on the mainboard due to the way they build thier cheap circuit boards..

Posted on Sep 05, 2007

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Posted on Jan 02, 2017

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Unit has power and lights up. None of the buttons work and cd wont eject. The CD eject button turns the unit off but won't eject the CD. Cannot change the functions. Have reset the unit and checked th


Remove the face plate and clean the contacts on both the head and the radio. It sounds like a bad connection, The base and head use serial data to talk to each other(control).If one of these connections are bad the unit will not work properly.

Oct 06, 2014 | Sony MEX-BT2900 Bluetooth Car Stereo with...

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How to Turn Off Demo Mode


<span style="font-weight: bold;">Blaupunkt:</span><br /><br /> <ol> <li>Press the (PWR) to turn the unit off.</li> <li>Press the (DIS) and (1) simultaneously for more than 3 seconds to activate the demonstration mode.</li> <li>Press both buttons again from more than 2 seconds to cancel this mode.</li></ol>or<br /> <ol> <li>Try pressing and holding menu for 10 seconds to turn it off.</li></ol><span style="font-weight: bold;">Bose:</span><br /> <ol> <li>Unplug the unit and wait ten seconds.</li> <li>Plug it back it and press repeatedly on the eject button.</li> <li>The demo disc will eject.</li></ol><span style="font-weight: bold;">Clarion:</span><br /> <ol> <li>Press and hold the "D" button to enter the settings menu.</li> <li>Use the next track button until SCRN SVR is displayed, use the rotary knob to select "OFF".</li> <li>Press the "D" button to exit the settings menu. </li></ol><span style="font-weight: bold;">Garmin:</span><br /> <ol> <li>DO NOT DO THIS TO A FUNCTIONING UNIT. Hold down your MENU key, Go to your SYSTEM tab, SYSTEM INFORMATION.</li> <li>When the software version window come up, hit ENTER.</li> <li>Press RANGE UP 3 time, Range DOWN 3 times, RANGE up 1 time, RANGE down 1 time.</li> <li>The system should reset, when asked to use RETAIL mode say NO.</li></ol><span style="font-weight: bold;">JVC:</span><br /> <ol> <li>Hold down the SEL button for 2-3 seconds.</li> <li>Use the &lt;&lt; or &gt;&gt; buttons to find DEMO.</li> <li>Turn the VOLUME knob until it says OFF or DEMO OFF.</li> <li>Press SEL again.</li></ol><span style="font-weight: bold;">Kenwood:</span><br /> <ol> <li>Go into standby mode, hit menu and then press "hold". A menu should pop up.</li> <li>Use knob to select demo.</li> <li>Press in on the knob and hold until it says "demo OFF".</li></ol>or<br /> <ol> <li>Switch to Standby.</li> <li>While holding down 5, press Reset with a paperclip or similar and continue to hold down 5.</li> <li>Demo mode should now be off.</li></ol><span style="font-weight: bold;">Magnavox:</span><br /> <ol> <li>Press and hold the menu button for 5-10 seconds until the normal menu pops up and then go to the section that says demo and turn the demo mode off.<span style="font-weight: bold;"></span></li></ol><span style="font-weight: bold;">Pioneer:</span> <ol> <li>Turn the vehicle's key to the Accessory or ACC position.</li> <li>Press the "Source" button, located on the left-side of the radio, and press the "Off" button that appears on the screen to turn off the unit.</li> <li>Locate the "Volume/Mute" button, located on the left-side of the unit.</li> <li>Press and hold the "Volume/Mute" button until the demo mode turns off.</li></ol>or<br /> <ol> <li>Turn the radio off.</li> <li>Push "Memory 5" or "Memory 6" (depending on your model) for just a second.</li> <li>When you hear a beep, demo mode is off.</li></ol><span style="font-weight: bold;">Pioneer Premier:</span><br /> <ol> <li>With the unit Off and the car ignition On and Running, press button number 5 and release that button to turn off Demo mode.</li></ol><span style="font-weight: bold;">Sharp:</span><br /> <ol> <li>When the unit is in the power stand-by mode (demonstration mode), press the X-BASS/DEMO button.</li> <li>The demonstration mode will be cancelled and the display will disappear.</li></ol><span style="font-weight: bold;">Sony:</span><br /> <ol> <li>Press display twice to turn off Demo mode.</li></ol>or<br /> <ol> <li>Press and hold the select button.</li> <li>Press the select button repeatedly until the desired item appears.</li> <li>Rotate the control dial to select the setting DEMO.</li> <li>Rotate the control dial to select the setting DEMO-OFF.</li> <li>Press and hold the select button.</li></ol><br />or<br /> <ol> <li>Press the STOP and the EJECT buttons simultaneously for 5 seconds.</li> <li>UNLOCKED should now appear in the display and you should be able to eject the disc.</li></ol>If Demo mode comes back on every time you turn off the ignition and back on, you have a wiring problem with your Constant +12 Volt Memory wire.

on Jun 22, 2011 | Audio Players & Recorders

1 Answer

Hoe to reboot pdt6840 scan gun


Warm Boot:

- Press the "PWR" button to turn the unit off.

- Press the "4" and "5" keys at the same time.

- While still pressing the "4" and "5" keys press and release the "PWR' button again.

- Release the "4" and "5" button.

- The PDT6846 should perform a warm reboot.

Cold Boot:

- Press the "PWR" button to turn the unit off.

- Press the "B", "D" and "A" keys at the same time.

- While still pressing the "B", "D" and "A" keys press and release the "PWR' button again.

- Release the "B", "D" and "A" button.

- The PDT6846 should perform a cold boot.

May 03, 2012 | Symbol PDT6842-NIS632EU Portable Data...

1 Answer

276C not locating any sats


Going to give you a possible solution but i don't think you are going to like it. The problem sounds easy and being as the unit is way off warranty you may or may not want to try this. Sounds like what you have is a broken wire in the antenna or a bad connection, you might MIGHT be able to fix this by opening up the antennae portion of the unit and see what you can see, broken wire or bad connection will have that result. Cleaning of the connector or re soldering of the wire should/might fix the problem. Hope this helps

May 10, 2010 | Garmin GPSMAP 276C GPS Receiver

1 Answer

Tape compartment will not open, has tape inside


hi you can try to press eject but nothing gone happen because the tape is stock inside , thats means you
will have to open the camera to remove the tape
manally/ but you can try your pwr pack adaptor in the cam then press rewind if you got the pwr on.,if that rewind let it go tothe end the press eject
if its not pwr on doesnt look good you will have bring to service dep at a dealer you is good in cam service

Mar 03, 2010 | JVC GR-FXM39 VHS-C Analog Camcorder

1 Answer

How to turn the unit on and off


Hi, you can turn the unit on by pressing any button beside the eject. And to turn it off press the PWR button and hold it for 3 seconds. It will also turn on as soon as you put in a disc.

Aug 13, 2009 | Alpine CDM-7833

2 Answers

Cannot eject DVD or turn off machine or anything


hold your power button down for 8 seconds and the machine will power down

Feb 19, 2009 | JVC DR-MV5S DVD Recorder/VCR

3 Answers

Magellan Explorist 500 LE Power


eXplorist units have also some hidden and service functions. Like, if unit is off, you can to press:

- IN + PWR - to full selftest of unit (screen test, keypad test, NMEA test)
- OUT + PWR - to serial port test
- ESC + PWR - to burn-in process
- LIGHT + ENTER + RWR - tp uploading of new firmware
- NAV + PWR - to call Service Function window (see below)
- NAV + MENU + PWR - to force power off, equal remove batteries.
- GOTO + OUT + POWER - clear memory and set all settings as default.


IN + PWR helped to power up my unit.

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2 Answers

Reading and bad disk


You can press the eject button on the drive behind the front panel or connect the ribbon cable from the drive to a PC to eject it. More instructions are on my website here: www.drx9000repair.netfirms.com/

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5 Answers

Not working "at all"...


Ah, I'll check that out I'm having the EXACT same problem! :) Thanks.

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