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Alpine 50x4 cdm 7874 plays the disc in the stereo, but I"m unable to get any sound from the head unit. Anyone have any ideas to this issue?

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What's the year, make , model of the vehicle? How was the unit installed: wire to wire or using a oem wiring harness?

Posted on Sep 16, 2010

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I was wondering does the Alpine CDM-7874 have any code. I just bought a car with this system in it and it had a dead battery and the stereo is not working


There should be no code. If you can try to see if you can check to see if power is getting to the red and yellow wires on the back of the radio. If there is a reset switch, try pressing that. It should be a small depression about the size of a pencil tip on the face or a hole with a red switch behind the face on the subpanel.

Apr 24, 2011 | Alpine CDM-7874 CD Player

1 Answer

It just stop working wanted to no if there is a fuse in the back of the unit


If your head unit was installed properly there would be 15 amp inline fuse on the yellow power lead.
Also check your vehicles fuse panel for a blown accessory fuse.

Mar 03, 2011 | Alpine CDM-7874 CD Player

1 Answer

How do I change the time on my stereo?


Hi,

what's the model and make of the stereo that you want its time changed?

Nov 08, 2010 | Alpine CDM-7874 CD Player

1 Answer

Want to install alpine system in 1997 toyota corolla. i need a wiring diagram for the cross over change


if you want to put a new car stereo in ur car you can buy a plug from wal-mart that is color coded to do the change for you

May 10, 2010 | Alpine CDM-7874 CD Player

1 Answer

Set the time on Alpine CDM 7874


turn off ur unit then ull just see the time on then u can set it up!

Mar 14, 2010 | Car Audio & Video

1 Answer

Alpine CDM 7874 won't play rest of CD after track 1.


It could be a bad burn or an issue with the receiver. Try re-burning the CD and see if that helps.

Jan 14, 2010 | Alpine CDM-7874 CD Player

1 Answer

Connect alpine 7874 to alpine powered sub


You need to run the RCA cables from the head unit to the sub for the audio signal, and possibly a turn on wire (the blue one on the back of the head unit), unless the sub has an automatic power feature.

The sub also needs power and ground wires attached, but those do not connect to the head unit. Power should be run directly from the battery with an inline fuse, and ground should go to the nearest good ground point (Trunk latch, seat bolt, etc).

Mar 20, 2009 | Alpine CDM-7874 CD Player

1 Answer

No Sound


There should be a fuse on the back of the radio. It needs to be checked.

Feb 06, 2009 | Alpine CDM-7874 CD Player

1 Answer

WIRING ALPINE CDM-7874


I need a wiring harness that plugs into the back of alpine cd player cdm-7874 & a user manuel

Sep 25, 2008 | Alpine Car Audio & Video

1 Answer

Alpine cdm-7833 cd car stereo code


I didnt think alpines had codes?

are you sure it has one?

sounds more like a connection problem

Feb 09, 2008 | Alpine CDM-7833

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