CD draw opens then closes
- Thread starter Cadmandu
- Start date
its the limit switch that gets dusty and dirty. the youtube video I saw one one is right, but also wrong. remove the cd module itself and get it open (often a plastic lock is in the way that only moves once the head/drive mechanism drops) and trace the wires to the switch, deoxit and voila!
so many went on the scrap heap because of this...
so many went on the scrap heap because of this...
you would almost have to spray paint it to affect the laser pickup, it works at such a short wavelength, random dust aint an issue, if you think it is, a q-tip with 90-some percent iso should do it. just dont go pushing on it, the positioning motors aint what they used to be - cheaper than crap
I just loaned a friend a Denon cd player with that same issue.
Press open and the drawer slides out then sucks back in immediately. Sometimes more than once.
Sooner or later it will stop in the open position so a cd can be placed in the tray.
I told him it works fine other than that glitch.
If for some reason I get it back I'll at least know what may be the cause and cure now.
Press open and the drawer slides out then sucks back in immediately. Sometimes more than once.
Sooner or later it will stop in the open position so a cd can be placed in the tray.
I told him it works fine other than that glitch.
If for some reason I get it back I'll at least know what may be the cause and cure now.
Justgotohm
Super Member
I have a commercial Denon CD player that has this same issues. I haven't opened it up yet.
DonQuixote99
just give me some truth
I once fixed that issue on some CD player or other by gluing a little padding where the stop hits when the drawer opened. But that trick didn't work later on another CD player....
DaveVoorhis
Addicted Member
Because it has a sensor that senses or "picks up" -- as in "picks up a signal" -- the laser beam it reflects off the CD.
restorer-john
Addicted Member
The drawer load/limit switches are notorious. Some machines have one, others have several. Some machines have none and rely on motor current monitoring to determine load mechanism position. Some are strictly time based and have no limit switches either.
You can't go wrong locating and carefully cleaning limit switches, but correct belt replacement and loading mechanism cleaning and lubricating is a more likely path to the quickly reversing tray issue. Particular attention should be paid to plastic-on-plastic slide guides- use a plastics grease only.
Lubricate the upper bearing of the loading motor and while you're in there, clean and lubricate the laser sled guide(s) and the inner track limit switch on the sled assembly. Also lubricate/clean the spindle motor upper bearing.
You can't go wrong locating and carefully cleaning limit switches, but correct belt replacement and loading mechanism cleaning and lubricating is a more likely path to the quickly reversing tray issue. Particular attention should be paid to plastic-on-plastic slide guides- use a plastics grease only.
Lubricate the upper bearing of the loading motor and while you're in there, clean and lubricate the laser sled guide(s) and the inner track limit switch on the sled assembly. Also lubricate/clean the spindle motor upper bearing.
petehall347
the brandy coffee man
i have had them like that .. pushing off button at right moment worked until i got one that worked properly
restorer-john
Addicted Member
There's a useful thread by Dr*Audio on AK on general CD player troubleshooting you can look at also.
I think it's here:
http://audiokarma.org/forums/index.php?threads/troubleshooting-cd-players.440522/
I'll take a peek as well, need to fix a similar problem with a Cambridge unit.
http://audiokarma.org/forums/index.php?threads/troubleshooting-cd-players.440522/
I'll take a peek as well, need to fix a similar problem with a Cambridge unit.
petehall347
the brandy coffee man
i found that out the hard way ..now i just use my own saliva on a cotton bud . works fine for me .
