ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hi guys,
I've recently got hold of a Beogram 6006 and I love it! The only issue with it is the toneam isn't completely parallel with the body. I'm happy to do the adjustments but in the service manual it talks about making the sensor arm 90 degrees to 'Rod D' but I can't find this Rod anywhere....
Lee
Lee, the tonearm adjustment is seperate from the sensor arm adjustment so you don't need to worry about it just yet.
Make the adjustment for the tonearm with the 2 screws (B) as per the service manual. Only do the sensor arm if it really needs it. They need to be 90° to the carriage slide bar/rail which you can do with a good set square. I think the 'rod' may be a service tool item for service engineers. Check that the metal carriage rail is set in its clips properly before adjusting anything. Clean and relubricate it whilst you're in there.
Dave.
Hi Dave,
I did all the adjustments and made it perfectly perpendicular but then I had a strange issue on pressing pause. The needle rises and moves towards the right slightly... also when pressing the right button to track search the tonearm seems to rise a fraction too slow and pulls the stylus out of the grove on an angle towards the centre of the record.
If I adjust it so its slightly mis-aligned towards the left, it pauses as it should and doesn't move to the left at all.... strange!
Hi Lee,
when the stylus lifts, it will normally move slightly to the right. When playing, the grooves make the stylus move to the left (towards the centre of the vinyl), there has to be some 'play' in the tonearm movement side to side to compensate for grooves not being completely round and for any defects in the vinyl.
My bad David. I meant jumps to the left when paused.. And it happens as soon as I press play. The arm moves to the start of the record and as it descents the whole carriage moves to the left.
Lee: My bad David. I meant jumps to the left when paused.. And it happens as soon as I press play. The arm moves to the start of the record and as it descents the whole carriage moves to the left.
When you first hit 'Play' and the arm moves across, does it actually reach the edge of the vinyl or fall a bit short? You could try adjusting the set down point to compensate. Sounds odd though. I don't see why/how it can jump backwards once it's in the correct place?
it reaches the vinyl no problem and is above the run in grove... but as it drops it suddenly moves a few mm to the left
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I think I've got it all set up correctly... the Arms are at 90 degrees to the carriage rails so thats good. It also pauses without moving and sets down at the correct point. But it isn't lined up with the body of the turntable... could the floating sub chassis be out of line somehow? it all seems to be correct...
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I've managed to get the arm properly lined up. It wasn't at 90 degrees to the carriage rails as I initially measured.... it is now and it looks fine. The only thing is I had to adjust the photo shutter to prevent the arm immediately travelling to the right as soon as the needle descends on the record.
What is the correct way to adjust the photo shutter to make sure the stylus is always in the middle of the grove and not riding to one side?
On further inspection it seems that there is a part missing or something is still out of alignment...
All the pictures I can find appear to show a gap between the tonearm (weight part at the back) and the sensor arm....
Mine seems to rub up against it....
Can anybody offer any advice?
any ideas guys? I'm really struggling with this one..
I would help if I could but I haven't worked on a Beogram 8000 yet. There are a couple in my backlog of B&O turntables but it is unlikely that I will get to them until 2015. I can dig out one of the Beogram 8000 units I have and take some pictures of the tonearm assembly if it would help. My units are not functional at all.
That would be great if you could sonavor.... I'm working blind and think I've already caused more problems than I've solved.
Has anyone got a donor unit? Im looking for a complete beogram 8000 or 6006 tone arm assembly.
Lee: That would be great if you could sonavor.... I'm working blind and think I've already caused more problems than I've solved.
From your newer thread I know you now have a problem with your BG8000 tonearm (broken wires) but here are the pictures I recently took of some of my BG8000 units (waiting for repair). One of my units also has broken tonearm wires so I disassembled that one for some of these pictures.The first picture is for reference and is the BG8000 tonearm assembly. This BG8000 in non-working but the tonearm assembly is intact.
This picture is a closer look at the tonearm assembly two arms (tonearm and detector arm) from straight on.
...and from above.
In this picture you can barely make out the little bar that raising and lowers the tonearm.
This picture shows some of the tonearm key control points.
Here is a closeup of the tonearm yaw sensor window.
This picture shows the tonearm removed from its cradle to show key tonearm control points.
This picture shows the tonearm parallelism adjustment screw.
This is a picture of the removed tonearm (the one with broken signal wires).
This picture shows the tube where the phono signal wires go (from the tonearm to the wiring PCB for the Beogram.
This picture shows the destination board for the phono signal wires from the tonearm. The wires are small, delicate wires that are all the same color. In the case broken wires, it would be best to run new cables from this board to the tonearm. The problem with that is the cartridge connector in the tonearm for these wires is very difficult to remove for repair. I'm not sure it can be repaired and would be interested in finding out how someone that has ever done this tackled the task.
Thank you so much for the detailed images, they are superb and really helpful. I'm sure the cartridge socket must be removable somehow, its can't be the first one with broken wiring....
You are welcome. I hope you can get your Beogram 6006 back in working order.
Here are a couple of additional pictures for the tonearm assembly. This first one shows another view of the solenoid and lever that control the tonearm raising and lowering.
From underneath the tonearm assembly, this picture shows the solenoid pushing the lever (I simulated that with the small screwdriver shown in the picture). The picture also shows an adjustment screw that is used to make the top of the tonearm parallel with the top of the detector arm.
Thanks Sonavor for these fabulous pictures...
I wonder why I haven't seen this thread before... Up until now, the mechanics behind the vertical movement of the tonearm was unclear to me.
I didn't understood why the apparatus was under the detector arm instead of the tonearm. It's clear now: the small brass cylinder on the side of the counterweight gets free when the lever goes slowly up, allowing the tonearm to drop with gravity.
Sometimes, on mine, the tonearm drops like a brick. It happens rarely and it seems to be temperamental. Now I wonder: is it the moving coil that gets stuck and then engage abruptly ?, a bad lubrication of the tonearm vertical pivot rest ?, or that the counterweight simply retains the arm for a short period of time. On mine, the position of the small square counterweight is completely opposite of yours. (See the 1st photo of that thread):
http://archivedforum2.beoworld.org/forums/p/7246/64676.aspx
I never touched it though. I wonder if it was originally in that position. I definitely need a tracking force gauge..
Guillaume