Mine made a scraping noise right at the end of the record, and I traced it to a badly centred hole on the record itself! The edge of the record rubbed the carriage mechanism once each revolution.

Record rubbing wasn't the issue here on my side, so once again diving into the service manual, to see if there was any hints - not really. But, I then noticed that the aluminium plate wasn't proper centered and the top plat to the topside of the turnable wasn't the even recommended 2.5 - 3.0 mm. While it might not be that easy to see, but if you look at 4 and 8 o'clock on the plate you'll notice that the gap isn't even:

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So using the adjustments screws the mechanism was once again centered in relation to the top plate and this is how it looks according to the service manual. Adjusting screws L adjust the distance from the top plate to the topside and loosening the screws M and turning the suspension springs, the drive mechanism is centered in relation to the top plate.

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And here is how it looks in real life:

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Like Peter8300 suggested, it is probably the platter height that needs adjustment. The suspension height is adjusted via screws at the three copper colored thingies that the springs are attached.

I just had this problem myself that when playing a rather heavy record, at the end of the record when the arm mechanism was close to its left endpoint, the weight of it all made the disc somehow touch the base resulting in a scraping noise. I noticed that if I just slightly pressed down on the left side of the record edge when it was spinning, the scraping occurred again even when the arm was at the beginning.

Since the platter looked to be at the correct level all around, I adjusted all three screws just a quarter turn clockwise (to raise the platter) and tried again and the noise was gone!

Regarding the alignment of the black plastic cover for the arm, maybe you can compare with my picture to see if something differs / have been broken?

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Haha, I missed your post by a few minutes! :-)

Glad you got the noise sorted!

Could easily be a wrong platter belt.
The standard belts sold in large numbers on Ebay etc. have a wrong tension/elasticity (and sometimes even wrong size) and are known to
pull the platter towards the motor (and also introduce a too high sideways load on the motor spindle and bearings).
If this is such a belt, you will only make things worse by trying to compensate for it by moving the subchassis even further away from the motor.

Martin

Busy thread! Managed to post a respond without seeing yours Martin. But, I've played a 180g record which plays fine now and any other record again. Main reason why this probably happened was most likely due to that I removed the PCB2 card to re-cap it and re-mounting have of course put the mechanism so it wasn't centered any more. All in all I've re-cap all electrolytes, new diodes and tweaked the RIAA (thanks for help and input from Menahem) including new plater belts and pick drive belt from Martin.

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Agree to that the original belt wasn't that elastic any-more compared with the new one I got from you Martin and it did pull a little bit on the plater and got it slightly skewed but after the adjustment it everything looks fine again.

About belts loosing it's elastic, this is how the belt from the Beogram CD 6500 looked liked; clearly replacement time and it did sometimes have problem to eject the CD:

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Why did you replace diodes?

Martin

In the past when I've repaired old computers I have had weird issues due to that the original diodes such as 1N400x didn't keep within tolerances, so I usually replace with new fresh one just to minimise issues. Then on the PCB2 some of the diodes was bad so had to replace; you might remember this