Question about Sharp CD-C662 Shelf System

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Protect When I plug in my stereo this protect sign comes on. I cant turn on my cd player

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The protect message indicates that there is a problem with the output amplifier section. Verify that the speaker wires are not shorted together. If they are fine, there is an internal problem that is usually the output transistors. Your specific model I believe uses an amplifier pac (STK411-230). It should be replaced. It is available from tritronicsinc.com using part number VHISTK4113E-1 at a cost of $83.04.

Dan

Posted on Jul 21, 2008

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1 Answer

Kenwood car stereo is displaying Protect and wont come on


If ur kenwood stereo is going into protect mode, it is because one of ur speaker wires is shorting out. Make sure all of ur speaker wire connections are good, and then wrap them so they aren't grounding out against the chassis. This should solve ur problem.

Oct 09, 2011 | Kenwood Excelon DDX-7015 Double Din Car...

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I have protect displaying on my stereo


This is most likely due to speaker, speaker wiring, or faulty headunit problems. To troubleshoot this you need to slide the deck out and disconnect only the speaker connections. Turn on the stereo and if it still says "protect" then it's most likely a faulty deck. Otherwise, repeat the procedure of plugging in one set of speakers at a time until the "protect" comes back on. This is now your faulty speaker line. This could be the wiring or the speaker causing the problem so you could try swapping a speaker that you know works. If the problem persists you'll have to run new wire in place of the faulty line.

May 04, 2011 | Kenwood KDC-3031A CD Player

1 Answer

I have sharp cd pc3500 stereo system when i turn the power on the message on the screen shows PROTECT. I cant do anything nor any function work


Make sure the speaker wires aren't shorted together and that they are not freyed or cracked...the unit is in protect due to it's internal circuitry sensing a shorted output condition...this is in place to protect the unit should the speaker wires become shorted together. You can remove the speaker wires entirely and then turn on the unit to see if it comes on...if so then I would look at each wire carefully to make sure they look good..of course if the unit comes on and the wires look good then you may have a bad speaker component...Now, if the unit stays in protect after you unplug the speakers, then the unit probably has a blown audio output stage inside the circuitry and will need to be serviced.

Jan 05, 2011 | Sharp CD-PC3500 CD Shelf System

1 Answer

MY KENWOOD CAR CD PLAYER IS SAYING PROTECT??


Hi,

Kenwood head units show "protect" when there's a problem with the speaker outputs. This might mean a shorted speaker wire, a blown speaker, or an internal defect in the head unit. Once the condition that's causing the "protect" mode is fixed, the CD player should be back in normal mode the next time you turn it on.

If it's staying in "protect", then you'll definitely have to remove the stereo and do some troubleshooting to fix it. Many car audio stores will do system troubleshooting, for a fee. If you want to do it yourself, here's what you need to do:

Pull the Kenwood unit from the dash and disconnect all the speaker wires. Turn it on and see if the "protect" message displays. If it does, the stereo has an internal defect and will need to be serviced. If it doesn't, then turn it off, and re-connect one speaker. Turn it on again and see if it displays "protect".

If it works with a single speaker connected, keep re-connecting the others until you identify the speaker that's causing the problem. There may be a wiring problem or defective speaker in that location.

If it displays "protect" with a single speaker connected, then disconnect that one and try a different one. If all the speakers cause a "protect" mode, then you're probably back to a defective head unit, unless your friend managed to blow all your speakers at once.

Thanks,

Dec 09, 2009 | Kenwood KDC-319 CD Player

3 Answers

Kenwood car stereo cd player reads protect mode how do i fix this


i have a kenwood kdc-241 car stereo and it has gone onto protect mode i have done everything it says in the manual and even taken it out of the car just in case it was damp i have tried putting it back in but still is in protect mode can anyone help me please

May 25, 2009 | Kenwood Car Audio & Video

1 Answer

Its on protect mode and i cant get it off


Look on the face plate for a really small hole. Put the tip of a pen in the hole and hold it for a few seconds. Your system should then re-set. If the Protect signal keeps coming on, take it to the dealer to make sure your stereo is wired properly....hope this helps

May 02, 2009 | Kenwood KDC-MP235 CD Player

1 Answer

"PROTECT" is displayed on the car stereo when turned on


This is really easy to fix. Look on the face plate for a REALLY small hole. Put the tip of a pen in the hole and it should work. This usually means the stereo isn't wired properly so if the PROTECT keeps coming on after you've re-set it, take it to a dealer. To make sure you're everything is in properly. Hope this helps...

Jan 26, 2009 | Kenwood KDC-MP228 CD Player

1 Answer

Cd player comes up with ''PROTECT''


one of your speaker wires to the internal amp is shorted. turn power off and make sure they are not touching metal or each other and then hit reset again. if this doesn't help your power ic may be fried inside the stereo or a speaker is shorted.

Nov 14, 2008 | Kenwood KDC-MP435U CD Player

6 Answers

Security Code for Protect mode


Turn on the car so the radio is flashing "Protect." Look on the front / removable face of the stereo. On it you will find a small round hole - that's a reset button. Find a small paper clip, unfold the clip and stick it gently into the hole. The "Protect" will stop flashing, and Kenwood will be displayed. Unfortunately all your settings/presets will be gone, but at least the stereo is working again!

Apr 30, 2008 | Kenwood KDC-W3534A CD Player

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