The old belt came off and I got a replacement belt, but there was no diagram on how to put the new belt on the turntable

Check out YouTube there are some standard videos on belt replacement that might apply to your model.

To replace a turntable drive belt.

Before starting any work on your turntable disconnect it from the mains power supply. Remove the stylus or complete headshell to prevent any accidental stylus damage.
1. Remove the rubber platter mat to expose the platter.
2. Put your thumb and forefinger through the two round holes either side of the centre spindle and lift the platter off. You may need to give the centre spindle a light tap (whilst applying upward pressure) with a screwdriver handle or some similar tool that will not leave any marks or damage.
3. Remove the old belt and wipe the platter and motor pulleys with an alcohol swab to remove any old belt residue.
4. Place the new belt around the platter pulley making sure it is sitting flat without any twists.
5. Flip platter over to the right way up. A correct fitting belt will stay put and an over sized belt will fall off.
6. You will see 1 or 2 large rectangle or square shaped cut outs in the platter near to the outer edge. Through one pinch up the belt and slip a finger or belt hook between the platter pulley and the belt gripping the belt ready to fit over the motor pulley.
7. Align the centre hole of the platter with the spindle and place platter back into position keeping a grip on the belt.
8. Slip belt over motor pulley and give the platter a light clockwise rotation to ensure the belt is riding correctly.
9. Replace the rubber mat and then run the turntable to ensure correct operation.
You have now successfully completed the process.

MUSIC IS LIFE, LIVE IT LOUD.
Copyright.. Styluscity, John Harrison.

To replace a turntable drive belt.
Before starting ensure you disconnect the power supply.
1, Remove the rubber platter mat to expose the platter.
2. Put your thumb and forefinger through the two round holes and lift the platter off. You may need to give the center spindle a light tap (whilst applying upward pressure) with a screwdriver handle or some similar tool that will not leave any marks or damage.
3. Remove the old belt and wipe the platter pulley and motor pulley with an alcohol swab to remove any old belt residue.
4. Place the new belt around the platter pulley making sure t is sitting flat without any twists.
5. Flip platter over the right way up. There are1or 2 larger rectangle shaped cut outs in the platter.
6. Through the cut out pinch up the belt and slip a finger or belt hook between the platter pulley and the belt gripping the belt ready to fit over the motor pulley.
7. Align the center hole of the platter with the spindle and place platter back into position keeping a grip on the belt.
8. Slip belt over motor pulley and give the platter a light clockwise rotation to ensure the belt is riding correctly.
9. Replace the rubber mat and then run the turntable to ensure correct operation.
Remember, when changing between 33 & 45 rpm the platter must be rotating to ensure correct belt repositioning on motor pulley.
Job done.
Copyright, Styluscity.com

To replacea turntable drive belt.Copyright.. Styluscity.com, JohnHarrison. Nov 2011Before starting any work on yourturntable disconnect it from the mains power supply.Remove the stylus or completeheadshell to prevent any accidental stylus damage.1. Remove the rubber platter mat toexpose the platter.
2. Put your thumb and forefinger through the two round holes either side of thecentre spindle and lift the platter off. You may need to give the centrespindle a light tap (whilst applying upward pressure) with a screwdriver handleor some similar tool that will not leave any marks or damage.
3. Remove the old belt and wipe the platter and motor pulleys with an alcoholswab to remove any old belt residue.
4. Place the new belt around the platter pulley making sure it is sitting flatwithout any twists.
5. Flip platter over the right way up. Acorrect fitting belt will stay put and an over belt will fall off.6. You will see 1 or 2 largerectangle or square shaped cut outs in the platter near to the outer edge. Throughone pinch up the belt and slip a finger or belt hook between the platter pulleyand the belt gripping the belt ready to fit over the motor pulley.
7. Align the centre hole of the platter with the spindle and place platter backinto position keeping a grip on the belt.
8. Slip belt over motor pulley and give the platter a light clockwise rotationto ensure the belt is riding correctly.
9. Replace the rubber mat and then run the turntable to ensure correctoperation.MUSIC IS LIFE, LIVE IT LOUD.Styluscity.com cansupply replacement drive belts for all turntables

To replacea turntable drive belt.Copyright.. Styluscity.com, JohnHarrison. Nov 2011Before starting any work on yourturntable disconnect it from the mains power supply.Remove the stylus or completeheadshell to prevent any accidental stylus damage.1. Remove the rubber platter mat toexpose the platter.
2. Put your thumb and forefinger through the two round holes either side of thecentre spindle and lift the platter off. You may need to give the centrespindle a light tap (whilst applying upward pressure) with a screwdriver handleor some similar tool that will not leave any marks or damage.
3. Remove the old belt and wipe the platter and motor pulleys with an alcoholswab to remove any old belt residue.
4. Place the new belt around the platter pulley making sure it is sitting flatwithout any twists.
5. Flip platter over the right way up. Acorrect fitting belt will stay put and an over belt will fall off.6. You will see 1 or 2 largerectangle or square shaped cut outs in the platter near to the outer edge. Throughone pinch up the belt and slip a finger or belt hook between the platter pulleyand the belt gripping the belt ready to fit over the motor pulley.
7. Align the centre hole of the platter with the spindle and place platter backinto position keeping a grip on the belt.
8. Slip belt over motor pulley and give the platter a light clockwise rotationto ensure the belt is riding correctly.
9. Replace the rubber mat and then run the turntable to ensure correctoperation.You have now successfully completedthe process.MUISC IS LIFE, LIVE IT LOUD.

To replacea turntable drive belt.Copyright.. Styluscity.com, JohnHarrison. Nov 2011Before starting any work on yourturntable disconnect it from the mains power supply.Remove the stylus or completeheadshell to prevent any accidental stylus damage.1. Remove the rubber platter mat toexpose the platter.
2. Put your thumb and forefinger through the two round holes either side of thecentre spindle and lift the platter off. You may need to give the centrespindle a light tap (whilst applying upward pressure) with a screwdriver handleor some similar tool that will not leave any marks or damage.
3. Remove the old belt and wipe the platter and motor pulleys with an alcoholswab to remove any old belt residue.
4. Place the new belt around the platter pulley making sure it is sitting flatwithout any twists.
5. Flip platter over the right way up. Acorrect fitting belt will stay put and an over belt will fall off.6. You will see 1 or 2 largerectangle or square shaped cut outs in the platter near to the outer edge. Throughone pinch up the belt and slip a finger or belt hook between the platter pulleyand the belt gripping the belt ready to fit over the motor pulley.
7. Align the centre hole of the platter with the spindle and place platter backinto position keeping a grip on the belt.
8. Slip belt over motor pulley and give the platter a light clockwise rotationto ensure the belt is riding correctly.
9. Replace the rubber mat and then run the turntable to ensure correctoperation.MUSIC IS LIFE, LIVE IT LOUD.Styluscity.com cansupply replacement drive belts for all turntables

really simple, take off the top, put the belt round the little cog first then, start putting it on the big one, whilst turning the turntable! try that

as the belt sliped from the turntable you must replace it with new one.if upside down turntable you can see marking of belt on it.just put a new belt on turntable keep it on center.remove top rubber pad you will see three or one big hole on turntable from where you can see the belt turn that hole so you can see motor pully just hold belt by a screwdriver and pull it on motor pully.

http://www.archive.org/details/Turntable_Belt_Installation

above is a generic video that applies to almost all turntables including yours that will show how to install the belt an a few other things.

1) Remove the platter - just lift up
2) Underneath the platter, you'll see a small lip section
3) Wrap the belt around this lip
4) Put platter back on turntable
5) Rotate platter until you see the motor shaft through the holes on the platter - a brass round looking piece
6) Pinch the belt around the motor shaft.
7) That's it.

- OPTiC
MasterTech
Digital Analog Therapy
Turntable Parts : Turntable Repairs