Presumably you mean correcting the speed to play 45 and 33 correctly?
Some turntables have the speed control(s) as a preset(s) built into the base on the underside of the unit. Often covered with a sticker. You simply remove the sticker and stick a small screwdriver in the thing and turn it.
Others have the preset inside on a circuit board, got to by removing the bottom of the turntable. Others have it built into the motor itself.
You should replace the belt first if the speed is slow on both 45 and 33, before adjusting the motor speed.
SOURCE: new needle for sony ps-lx250h?
I have the same turntable and I just bought a replacement needle through the needledoctor.com. The needle is made by Audio Technica and the part number is ATN3600L.
SOURCE: Sony PS-LX250H turntable speed adjustment on underside, how??
Great detective work.
Let's collaborate on this for the benefit of others who may have the same problem.
L.IN should be the point at which the Lead-In groove on the LP would be, where the tonearm will drop to play an LP
RET should be the point at which the tonearm will lift up and RETurn to its rest at the end of the LP
That leaves us with SW. If your source is right this will affect the Speed. I can't imagine what the W stands for.
Since this turntable lacks the traditional strobe light and dots along the platter rim for determining if it's on target speed-wise we have to improvise and make a Strobe Disc.
It has radial marks on it and you place it on the turntable like a record. The lights in your room running at 60hz will make it appear to be stationary if the speed is correct; slowly creeping CW if too fast; CCW if too slow.
Here's a link to a PDF from which you can print your own disc... http://www.extremephono.com/ftp/60Hz.PDF
Here's what you do. Lay the trimmed Strobe Disc on top of a record while it's playing one of the outer tracks. This is because the stylus imparts some drag so we want to factor it in.
Then adjust the screw exactly one turn Clockwise and note how the speed has changed. Trial and error should get you to where you want to be.
SOURCE: how do i replace belt on lx250h?
Not sure about yours, but some of these one lifts the rubber pad to get access to the belt through holes in the platter when you are re-installing to get the belt back on the hub it runs on. One usually has to lift the platter off to get the belt around the center hub and the motor pulley first..
You can probably find the belts online with a Google search.
SOURCE: Sony Belt Drive Turntable Platen speed
Check for grease on the platter or anywhere in the mechanism. Sometimes somebody has messed around with the speed preset, there might be two. You could try adjusting them. Sometimes they are found on the underside of the turntable, covered up, or they will be on the PC board of the deck.
SOURCE: the turntable motor runs but
most platters are secured with a c clip in the middle --gently prying it off should allow the platter to be removed--than a little dexterity is required to reattach the belt to the pulley and around the bottom of the platter--if the belt is broken or stretched you can pursue a replacement at mcm electronics .com
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