The CDJ2000Nexus is one of the most commonly used DJ players in Denmark where our store is located, and we therefore have a lot of experience repairing these players. So if you have questions beyond these 5 points of service – let us know!
Link
On most of the Pioneer CDJ’s, the link function is a vital function, however the lan jack tend to be a week spot on the construction of the player. The lan jack on the CDJ2000Nexus is unfortunately no exception. The lan input is mounted directly on the main board itself, which makes the issue even more serious. In most cases issues and bad connections on the lan jack is caused by too crowded space in a flight case. The cables are stretched and bend, causing to much stress on the input lan jack. The result is most often a bad or loose connection between CDJ’s, which then can result in emergency loops, and a lost link function while you are playing.
To test if you have a bad connection, simply connect two CDJ’s with each other using a lan cable, and then slow and gently wiggle the link cable on the players one at a time. If the connection is lost even for a second, you will have to repair the unit.
Since the mainboard is so expensive, the repair progress is to replace the DKN1650 lan jack / lan RJ by soldering. This repair takes a steady hand and if you are not experienced in soldering, this is not the place to start. If the lan jack is torn off the printed circuit board you will have to replace the DWX4103 Main control assy in order to repair the link function.
Play/cue
The play and cue buttons will always be a vulnerable point on the CDJ’s, DDJ’s and XDJ’s. The two buttons are both used a lot, and they often take a lot of beating. Wear and tear on the buttons often results in bad connections or periodic problems with the two buttons. To fix the issue, replace the tactile switches with the DSG1117 switch, or replace the entire DWX3339 play and cue circuit board. Replacing the board is quick and easy, and you might as well keep a DWX3339 PCB in stock – just in case.
The plastic keyboard on the CDJ2000Nexus is only in vary rear cases damaged or broken. For the record the plastic replacement part for play and cue on the CDJ2000Nexus is called DXB2126.
Watch our video on how to repair play cue buttons.
Hot cues
The hot cues on the CDJ2000Nexus works almost exactly like on the previous model, the CDJ2000. The 3 hot cues consist of a tactile switch with part number DSG1079 and a plastic keyboard / button set with part number DAC2469. Both the switch and the plastic parts tend to break over time. The tactile switch is a simple 2 pin through hole component like most other buttons on Pioneer’s products. Easily replaced by soldering.
all buttons can be tested in service mode – this is a quick way to get an overview of issues o buttons, and potentiometers on the players. Make sure to check the rec/call button, this usually causes trouble.
If the plastic buttons seams loose and rattles from side to side, the plastic is broken, and you will have to replace it to make sure you are not damaging the tactile switch.
Browse encoder
When browsing for tracks you are using the browse encoder located on the right side of the screen on the CDJ2000Nexus. Over time the crispy clicking sound from the encoder when it is turned seems to fade. The browse encoder is getting looser and looser until the feel ling of the clicks/steps are totally gone. This is when the browsing indicator on the screen is starting to jump and become unreliable. In a last-minute browsing situation this is really annoying and a real stress factor!
Luckily the solution to the problem is clear, you will have to replace the browse encoder itself. The spare part you need is – just as on many other CDJ’s like the CDJ2000, and CDJ2000NXS2 – called DSX1080 encoder switch. To replace it you will have to take the whole screen section apart. This takes patience, however it is not that difficult. Removing the DSX1080 takes a quite hot soldering iron. Usually, I personally solder this part at around 410 degrees C.
Jog gear
On most of Pioneer’s flagship players, you can adjust how much resistance you wish on the jog platter. The jog adjustment mechanism on the CDJ2000Nexus works like the previous models like the CDJ2000 and CDJ1000MK3. The “gear box” is mounted on the DNK6138 jog holder/housing. The jog mechanism is based on several plastic rollers, gears, and springs. The many minor plastic parts may cause different problems.
If the jog wheel is suddenly jammed, stuck or if there just seams to me an inappropriate amount of friction when the wheel is turned, then a roller may be broken. The DXB2178 jog pinch rollers are small however vital for the mechanism. The jog wheel works a bit like a ball bearing, and the DXB2178 acts as the balls. The rollers might break due to wear and tear, leaving small plastic pieces in the rest of the mechanism. This is of cause unwanted although it is easy to fix. Once the jog section is opened up, it will be very easy to see if a broken pinch roller is causing the problem. If that is the case, remove the broken plastic parts, and replace the DXB2178 roller simply by snapping it in place in the jog holder. You might want to lubricate all of the jog pinch rollers using the GYA1001 original Pioneer grease. Doing this will reduce the noise coming from the jog wheel. One can of GYA1001 will last for a lifetime!
Follow this link and find al our spare parts for the CDJ2000Nexus.
The XDJ RX may be one of Pioneer’s bestsellers. The unit is a great fit for mobile DJ’s and smaller bars and clubs. Since the XDJ RX went out of production, the unit has been replaced by both the XDJ RX2 and XDJ RX3. So it is no wonder this “old lady” might need a little love from time to time.
The play and cue buttons are some of the most used buttons across all models. The DAC3018 plastic keyboard for the play and cue buttons on the XDJ RX tends to break over time due to wear and tear. If your play or cue button seams loose or can even turn around then it needs a replacement. To replace the part, you will have to take the unit apart, and pull out the “CDJB” (DWX3614 player circuit). Once this is out of the way you can replace the keyboard. Make sure there is no dirt on the PCB or in the big round holes for the play and cue buttons. If there is any dirt, clean gently with isopropyl/rubbing alcohol before reassembly.
The XDJ RX consists of a small amount of circuit boards, especially compared to bigger models like the XDJ XZ. There is pros and cons with both large and small amounts of circuit boards. The good thing about a low amount of PCB’s is that is much easier even for a beginner to disassembly, and reassembly the unit. Also the low amount of boards means les ribbon cables to keep an eye on. The small amount of circuit also means les spare parts for you to keep in stock.
On the other hand it is sometimes just nice to be able to replace only a play/cue circuit board, and not the whole CDJB board – this will in some cases also make the purchase cheaper.
Anyway, ribbon cables. These paper thin flat cables are the highway of all data traveling through the XDJ RX, therefor these ribbons are a vital point to service. On the RX I would any time while servicing keep a critical eye on the DDD1687 ribbon cabels running between the CDJB (the player bords) and MIXB (the mixer board). The DDD1687 is used in both sides of the unit.
Also I would keep check the condition on DDD1683 witch is the cable connecting MIXB and the main board. If the chrome connecters in the ribbon are bend, loose, broken or the cable is broken or damaged – throw away the cable and replace it! It is not worth wasting time on bad ribbons since they are so cheap, can cause so many troubles, and are so easy to replace.
This guide will help you to find the right knobs and caps for the XDJ RX.
On the XDJ RX most DJ’s love to use the pads a lot. And for good reason, they are always within range and can be used to create both loops and hotcues. The XDJ RX unit’s 4 pads are produced in plastic. Meanwhile the XDJ RX2 has got 8 rubber pads. The plastic pads are strong and we do not see them break very often. Should you be unlucky and somehow end up with broken plastic pads, the replacement part is called DAC3026.
While the plastic is strong, the switch on the circuit board is often seen defective. On all the 4 of the pads the DSG1117 tactile switch is used. This is the same switch used on most players, controllers, and all in one unit like the XDJ RX for both play and cue buttons. The DSG1117 is a 2-pin through hole component and is replaced by soldering. The fact that it is only a 2-pin switch makes it one of the easiest components to replace. If soldering is a no-go for you, then you need to replace the CDJB DWX3614 control assy (player module).
Potentiometers or pots are the “turning buttons” used to adjust EQ, effects, booth or master out - or any other adjustment on the sound. Pot’s tend to get loose over timer, that is a common problem on all types of Pioneer mixers and any other type of DJ equipment. The potentiometers are replaced by soldering and most often they are quite easy to replace even though they have up to 8 pins. Typically, the effects wet/dry potentiometer is the pot that is getting torn first. On the XDJ RX the effects wet/dry also called level/depth is replaced with DCS1078 – the same goes for all the EQ rotary knobs on the XDJ RX. Find a fresh and pointy soldering tip and get going!
As on any other mixer, the faders are an important point to service and keep smooth. On the XDJ RX the line faders consist of several different mechanical parts, that will spare the slider component from dust, crumbs liquid or what ever might find its way into the fader. On the XDJ RX the fader is constructed the same way as on many other mixers like XDJ XZ, DJM900NXS2 and XDJ RX2 and 3. So if you are already familiar with that design the faders on the XDJ RX will be a walk in the park for you to service.
If your fader caps seams loose and wiggely, you might just replace the fader housing DAC2684. If that did not solve the problem the mechanics underneath might need to be repaired or simply tightened.
If there are any loose connections, of cause the fader/slider component will have to be replaced. This can be done by replacing the little circuit board that contains the slider. Otherwise the DCV1027 channel fader component can be replaced by soldering.
Follow this link, and find all our spare parts for XDJ RX
]]>Once you entered service mode there are often a few steps or sequences you must follow to test one thing after another. On most Pioneer DJ 4 channel club mixers like the DJM900Nexus you will first check the LED’s, then buttons then potentiometers and at last the faders. The “moving parts” like buttons, faders sliders are tested by pressing, sliding, or turning. When the part is pushed, slided or turned an LED should illuminate, and/or a text displayed on the screen writing the name of the component activated. “CUE” for instance. You may want to press the buttons 4-5 times each to make sure that the contention is good. Regarding sliders, and potentiometers you might have to wiggle them gently from side to side to make sure there are no loose connections.
To navigate the steps in the service manual, you must use one or two navigation buttons. On mixers you typically use the tap button, on CDJ’s it’s the back and tag buttons in the upper right corner of the screen. DDJ controllers who have no screen are a little different and a bit more difficult to navigate. Typically, you can check it all in the same sequence.
In the event you find one or more issues on the DJ gear, you may have to repair it. Here are some of the most frequent types of issues:
Defective buttons are most often fixed simply by replacing the “tactile switch” – often referred to as “tact switch” or simply “switch”. Watch our collection of switches for Pioneer DJ.
Replacing the switch is the cheapest way to fix a defective button although to do this you will need to solder. The only alternative is to replace the whole PCB (printed circuit board). Replacing the whole board is the safest and fastest way to fix most issues – especially if you aren’t so used to soldering. And in cases where you need to replace a bad play or cue button, it might be worth it to simply replace the whole board. Especially on many of the bigger new models like the XDJ XZ, and most flagship players like CDJ3000. Watch our collection of replacement circuits for Pioneer DJ.
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Loose connections on faders are just like buttons fixed by replacing the component itself or the board. You will have to look up the price to see what type of repair makes the most sense for you. Watch our collection of replacement faders.
I have often seen people trying to fix a bad fader by using contact cleaner or isopropyl alcohol and I have say that it is a no go. The reason is; the slider is lubricated with some sort of oil, and once you mix that with contact cleaner or alcohol you will dissolve this oil and make the slider absolutely stiff and almost unmovable. If you anyway try to fix anything with a spray product directly on the electrical components – then make sure that the power is OFF, and that the unit is 110% dry before turning it back on. Otherwise, you will blow a fuse.
Loose connections on potentiometers, it would normally make the most sense to replace the component itself, and not an entire PCB. Usually, the boards that contains potentiometers are big and vital and therefore also expensive. Replacing potentiometers requires soldering, however I personally find it easier to replace most potentiometers, than switches. Here is a link to our collection of potentiometers. make sure to get the meter with the right amount of pins, and also you should check rather it should have the “click/ step” while in the middle position. If you are unsure what type of potmeter you need, then feel free to take contact, we are here to help!
On most of the players out there the button combination is the same. Hold down “TEMPO” and “MEMORY” while powering up the unit. This method counts for CDJ’s like CDJ1000, CDJ900, CDJ2000, CDJ2000Nexus, CDJ2000NXS2 and XDJ all in one unit like the XDJ RX, XDJ RX2 and XDJ XZ and a lot more players!
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