Help Required: Teac P-10 CD Transport Failure

dtm1962 · 04:38 PM

I picked up a Teac Esoteric P-10 CD Transport which contains the better VRDS CMK-3 drive & KSS-151A laser.

Symptoms:

Open CD Tray and load CD.
Press close...CD Tray moves smoothly back in.
Clamp will pickup CD for a couple seconds, unclamp and then open & spit out tray with CD.

During this operation the laser is in Rest Position and does not move at all during the above operations....

Note: If I push laser assembly away from rest position ...it will stay there as is ... unless I close tray and then it will move back to Rest position and then the tray will close and clamp again. The laser is not clamped with shipping/transport mechanism ...it off to side (white locking lever.)

Laser is not visible even in dark during this procedure. I have not seen the Laser (faint RED) at all anytime since I picked it up yesterday.

Does anyone know the sequential order in regards to spinning & laser movement?

Is this correct:
Does the tray clamp the disc first..... then the laser assembly moves into position.... then the Disc spins and then the servos drive the radial & focus coils?

Is this correct? Or what is it? As I believe this is critical to the repair..

Note I changed out the Dual Power OPAMP (U113 - 5218L) that drives the Spindle Motor. NO Change from before....

Any help would be appreciated!

Thanks,

PlasticIsGood · 22nd January 2013, 04:42 PM

I don't know how much of the Sony loader is retained. If it has a hinged laser mech/spindle assembly lifted by a drum cam, this is a typical symptom of slipping belt or weak motor. Failure to fully lift the clamp home results in a rejected disk.

Make sure the belt and its pulleys are thoroughly clean. If it still slips you probably need a new belt.

Could also be a dirty microswitch failing to detect loading completion.

dtm1962 · 22nd January 2013, 05:13 PM

Quote:

Originally Posted by PlasticIsGood

I don't know how much of the Sony loader is retained. If it has a hinged laser mech/spindle assembly lifted by a drum cam, this is a typical symptom of slipping belt or weak motor. Failure to fully lift the clamp home results in a rejected disk.

Make sure the belt and its pulleys are thoroughly clean. If it still slips you probably need a new belt.

Could also be a dirty microswitch failing to detect loading completion.

Hi PlasticIsGood:

Here are the exploded view & part number for reference associated with the Disc Clamp system....

Does it relate to your resolution in regards to slipping belt and switches not being "make".

I see a belt/worm gear & and a pair of E-M switches

Let me know what you think.

dtm1962 · 22nd January 2013, 05:19 PM

Quote:

Originally Posted by PlasticIsGood

I don't know how much of the Sony loader is retained. If it has a hinged laser mech/spindle assembly lifted by a drum cam, this is a typical symptom of slipping belt or weak motor. Failure to fully lift the clamp home results in a rejected disk.

Make sure the belt and its pulleys are thoroughly clean. If it still slips you probably need a new belt.

Could also be a dirty microswitch failing to detect loading completion.

here is the Loader Assembly exploded view & parts list as well......

dtm1962 · 23rd January 2013, 02:02 AM

Quote:

Originally Posted by PlasticIsGood

I don't know how much of the Sony loader is retained. If it has a hinged laser mech/spindle assembly lifted by a drum cam, this is a typical symptom of slipping belt or weak motor. Failure to fully lift the clamp home results in a rejected disk.

Make sure the belt and its pulleys are thoroughly clean. If it still slips you probably need a new belt.

Could also be a dirty microswitch failing to detect loading completion.

Some success!

After adjusting the Clamp/Unclamp Switches I have got the player working 25% of the time. Better than 0% lol!

The clamp system belt requires replacement but its a PITA to add a new belt!

Does anyone now where you can get replacement TEAC belts?

Let me know if you have a source....

Stay tuned....

dtm1962 · 23rd January 2013, 03:22 AM

Quote:

Originally Posted by dtm1962

Some success!

After adjusting the Clamp/Unclamp Switches I have got the player working 25% of the time. Better than 0% lol!

The clamp system belt requires replacement but its a PITA to add a new belt!

Does anyone know where you can get replacement TEAC belts?

Let me know if you have a source....

Stay tuned....

So I'm at 90-95% Load & Start-up Success!

I will try it out for a a few days to see if this continues!

Thanks to PlasticIsGood as he directed me in the right direction!

PlasticIsGood · 23rd January 2013, 09:38 AM

I don't recognise the clamping mechanism, but I've never seen that mech before anyway. It appears the lifting is done by a gear-driven quadrant, but I can't see from the diagram how the mech itself, and not just the spindle, is raised. It looks like there must be separate motors for drawer and clamp.

If you find a belt is even slightly greasy, then a clean is likely to restore operation.

Generic drive belts can be had from many suppliers. Specification is tricky, because they are measured in different ways. One way is by internal diameter, another is length (i.e. internal circumference). Because your belt is slightly stretched, you should subtract a couple of mm from your measurement. It may be worthwhile ordering a couple of sizes if postage dominates the cost.

You may find that once you've replaced the belt, the microswitches need readjusting.

22nd January 2013, 02:42 PM	#1
dtm1962 diyAudio Member Join Date: Apr 2003 Location: Sarnia, Ontario, Canada	Help Required: Teac P-10 CD Transport Failure I picked up a Teac Esoteric P-10 CD Transport which contains the better VRDS CMK-3 drive & KSS-151A laser. Symptoms: Open CD Tray and load CD. Press close...CD Tray moves smoothly back in. Clamp will pickup CD for a couple seconds, unclamp and then open & spit out tray with CD. During this operation the laser is in Rest Position and does not move at all during the above operations.... Note: If I push laser assembly away from rest position ...it will stay there as is ... unless I close tray and then it will move back to Rest position and then the tray will close and clamp again. The laser is not clamped with shipping/transport mechanism ...it off to side (white locking lever.) Laser is not visible even in dark during this procedure. I have not seen the Laser (faint RED) at all anytime since I picked it up yesterday. Does anyone know the sequential order in regards to spinning & laser movement? Is this correct: Does the tray clamp the disc first..... then the laser assembly moves into position.... then the Disc spins and then the servos drive the radial & focus coils? Is this correct? Or what is it? As I believe this is critical to the repair.. Note I changed out the Dual Power OPAMP (U113 - 5218L) that drives the Spindle Motor. NO Change from before.... Any help would be appreciated! Thanks, __________________ Dan Last edited by dtm1962; 22nd January 2013 at 04:38 PM.

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22nd January 2013, 04:42 PM	#2
PlasticIsGood diyAudio Member Join Date: Mar 2012 Location: Bradford	I don't know how much of the Sony loader is retained. If it has a hinged laser mech/spindle assembly lifted by a drum cam, this is a typical symptom of slipping belt or weak motor. Failure to fully lift the clamp home results in a rejected disk. Make sure the belt and its pulleys are thoroughly clean. If it still slips you probably need a new belt. Could also be a dirty microswitch failing to detect loading completion.

23rd January 2013, 09:38 AM	#7
PlasticIsGood diyAudio Member Join Date: Mar 2012 Location: Bradford	I don't recognise the clamping mechanism, but I've never seen that mech before anyway. It appears the lifting is done by a gear-driven quadrant, but I can't see from the diagram how the mech itself, and not just the spindle, is raised. It looks like there must be separate motors for drawer and clamp. If you find a belt is even slightly greasy, then a clean is likely to restore operation. Generic drive belts can be had from many suppliers. Specification is tricky, because they are measured in different ways. One way is by internal diameter, another is length (i.e. internal circumference). Because your belt is slightly stretched, you should subtract a couple of mm from your measurement. It may be worthwhile ordering a couple of sizes if postage dominates the cost. You may find that once you've replaced the belt, the microswitches need readjusting.