20 Most Recent Sony CDX-L400X CD Player Questions & Answers

Hi, the problem is likely in the wiring or possibly a burned fuse. There is a separate wire to the radio that is always hot and keeps the station and clock settings while the key is off. If you tell me the car model and year, I may be able to tell you which wire and fuse to check. Was this working originally or has it never worked?

Sony CDX-L400X... • Answered on Aug 19, 2011

Ebay is the most common source (and cheapest !)

Sony CDX-L400X... • Answered on May 09, 2010

Hi, I have one, I can send it to you it is i good condition

Sony CDX-L400X... • Answered on Dec 31, 2009

Will my cda 9811 play my iPhone and how to hook ip if does

Sony CDX-L400X... • Answered on Oct 04, 2009

The drive(optical) drives door mechanism has malfunctioned. If the PC CD drive can be replaced that would be the best, but repairing is also not cost-effective...........sodeep

Sony CDX-L400X... • Answered on May 12, 2009

Thanks duncan, the knowledge that this was just lightbulbs was enough for me to hack a fix for my own unit. The result is not perfect but it's functional. If you have a small amount of soldering skill and a very basic grasp of electronics then this hack is very easy:

The problem is that there are two lightbulbs behind the LCD screen that illuminate a piece of translucent plastic. The bulbs are connected in series, so if one blows they both go out. My fix involves simply connecting a piece of wire across the blown bulb thus allowing power to reach the good bulb. In theory this alters the electrical properties of the circuit and may end up in death of the other bulb or worse damage. I've had about an hour's use out of my unit since doing this with no ill effects (it came with a car I just bought so I don't mind too much if it dies).

You only need the front panel. Unscrew the four screws on the back of the front panel and prise it apart. It's best to do this with the silver side down as there's a bunch of bits of plastic for the buttons that will fall out all over your bench if you hold it the other way.

To do the investigation I removed the LCD panel but this is not necessary for this fix. Look at the picture:


(On the pic, the LCD and bulbs are removed, so yours will differ a little from here).

The bulbs are wired at ba and bc. Connect your multitester across ba and check the resistance. If it's infinity, that's the blown bulb. If it's less (e.g. about 5 ohms) then that bulb's fine. Do the same across bc. Then, on whichever is blown, get a small piece of wire and solder it across. For a final check, connect the tester across A-C on the front panel connector (that's the top left and bottom right pins). If you see infinity, you either fixed the wrong bulb or didn't make a good connection.

Obviously, don't get solder on any other parts of the circuitboard or you're creating new circuits!

Sony CDX-L400X... • Answered on Oct 26, 2008

Just press the grey rubberish button on the down left side Have no idea about the CDX GT50U thou

Sony CDX-L400X... • Answered on Sep 13, 2008

here's the pdf of the wiring diagram



Sony CDX-L400X... • Answered on Aug 03, 2008

would like to know that are u getting no sound only while playing cd's or the problem is that u are not bale to hear even the windows login\logoff sound

Sony CDX-L400X... • Answered on Apr 17, 2008

How do you set the stations I don't have a manual on my Pioneer super Tracker 3-D

Sony CDX-L400X... • Answered on Apr 10, 2008

Have you tried using the reset button on the front of the unit (under the face panel)

Sony CDX-L400X... • Answered on Apr 05, 2008

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