20 Most Recent Alpine CDM-9821 CD Player Questions & Answers

Get the facia kit, Acc+ and Gnd are tapped off the cigarette lighter Batt+ is found in the BLUE plug behind the interior fuse box. Speakers FL, RL, RR are found behind the glove box and the FR speaker in the drivers kick panel. There are also other precautions to take when installing it to avoid frying the ICC computer which controls all the interior. When attaching speaker wires ensure you connect the correct side behind the glove box connect the left side of the cut and in the drivers kick panel connect the right side of the cut. Speaker wire colours are Grey FR, Orange FL, Pink RR & Blue RL. All speaker wires are twisted together. Influential Customs

Check and see if there is a fuse at the rear part of the radio.

1.Press and hold the " F " button for 3 seconds
2.Turn the big volume knob to the right till you get to " AUX "
3.Than press the " Band " button - It will say "on"
4.Exit out. Press "Source" on Radio till it says "AUX "
** You will now hear your Auxilary input

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Sounds broken but clean the connectors of the faceplate. Did the sound work before? If it did time to order a new radio.

Some older units have a small screw in the side of the knob. Use the proper tool to tighten that screw. If there is no screw and it uses a flat metal spring use a dental tool to bend the spring gently back into place. If this is all plastic with no adjustment consider using silicone sealer. A small dab will keep it on and allow you to remove it later if needed.

I had the same head unit. Did the same thing i just unplugged it and waited a little bit plugged it back in. Clean off the prongs where the face plate plugs into the deck too. worked for me. hope this helps

Assuming you have wiring diagram or labeled on deck, try here for wiring on Van.

http://www.the12volt.com/

you can try pacparts.com.

You can get the manual on the link below.

http://a248.e.akamai.net/pix.crutchfield.com/manuals/500/500cdm9823.pdf

set time on alpine stereo model CDM 9821

check the speaker connections or the speakers

It could be that the contacts are slightly oxidized, and need cleaning, or are just loose on the inside. You can take electrical contact cleaner and clean them. You might have to open up the unit to access interior contacts. It could also be a power supply issue to the display board, in which case, the unit would have to be troubleshot to verify the problem.
Here is a user's guide, in case you don't have one:
http://www.retrevo.com/support/Alpine-CDM-9823-Car-Receivers-manual/id/23223dj390/t/2/
Good luck, and hope this helps.

try resetting the radio.

radio stations on FM are only odd numbers...

such as 102.1 102.3 102.5 102.7 102.9 103.1 103.3 103.5 etc etc. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

try switching the front speakers to the rear speakers it it still doesn't work then you have a problem with your unit's power amp.

try disconnecting power to the radio for a few minutes.