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Question Does the service manual remark ‘in TestMode #65 the light pen can be seen’ mean that I should be able to see the light of the laser? Because I don’t see any light coming from the laser in TestMode #65. If I should, then the laser is defect and needs replacement, right?

My Beosound 9000 IR has stopped working so I can't do any Test mode to check it out but the visible laser must be a light red glint. At least it's the only thing I've ever seen. It's also possible that by Light pen, they mean the eye". I can't imagine a test mode firing the laser without any danger for the operator. I remember a thread on BW2 that talks about another way to repair a faulty laser by (from memory) reflowing something on the main board. But I'm unable to find it.

Thnx again @Matador !

Do you know, is there any check I can make, in which:

The laser should be on, and in which I should be able to see it?

I've tried to catch it with an old camera (CCD without IR filter while playing the last track of a CD but nothing visible. The luminous clamper, doesn't help.

If you have and old camera and your Beosound is torn appart maybe you could try without the ring light on.

– Time after –

I've tried everything from old CCD Camera to iPhone front cam etc… On a Beosound 2300 where the lense is more exposed and I'm unable to see anything. Sorry.

Thnx again @Matador !

I have checken my module and found it has no such connector. Though very interesting to know that this issue can be solved by reflowing on the MK III version.

Since I have done so many checks, tests and cleaning without the wished for result, I have decided to order the replacement laser/mirror/lenses module. I will return after I have received, placed and tested it with my results.

To be continued and thans for 'travelling' with me!

Update Today I received the replacement Laser Pick-Up for the BeoSound 9000, and placed it. And the good news is, it works again! So after all checks, tests and cleaning of lenses and mirror, it was the laser unit that did not function well. My gratitude goes to Ralf Gerner of Gerner Electronics / Lasertrader.de who helped me pick the correct replacement parts. Great service and quick shipment. Still one issue? As said the BS9000 plays CD's again, though one thing still disturbs me. Just before it starts playing the selected CD, the display shows the message 'CLEANING REQUIRED'. It surprises me, since the whole Laser/lenses/mirror is completely new and clean. Login to view image Questions

1. Is this maybe an old notification that has to be reset?
2. If so, how do I do that?

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So after all checks, tests and cleaning of lenses and mirror, it was the laser unit that did not function well.

Somewhere in BWII, somebody said something like : If the laser is faulty, the whole unit starts to show lots of funky, unrelated behaviors that all goes good as soon as the laser work again". Wise and true.

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:-)

ISSUES SOLVED !

Thnx for your remarks @matador & @lesbart.

I have been cleaning the two prism sensors already at the beginning, and as described in the Service Manual. (See my first post in this thread, point 3)

Anyhow, I have been able to find out what to do. I was still in the process of re-assembling the unit. The glass door had not yet been put back. After doing that, the 'CLEANING REQUIRED' message was gone. Obviously quite logical.

Thanks again for thinking with me. All issues are now solved.

@KolfMAKER Thank you so much for this detailed write up. I learned so much on this thread and was able to test my BEOSOUND 9000 MK2 as well. Big thanks from California.

 

I believe the symptoms are identical on my machine. when I try to play a CD, I can hear some clicking noise but it eventually just says "PAUSE"
When I run TM 27. I get

NO ML ERROR
NO IIC ERR
1 CD ERR 2 = Focus error, it has not been possible to find focus.
NO SER ERROR
NO SLG ERR
NO PLT ERROR
NO APS ERROR

However, this is where things get interesting. the sledge moves fine when I manually select CDs in various slots and also (TM 71: Mechanical test of finger protection, sledge and led) seems to work well.
but when I run (TM 65: Light pen to outermost position), the lightpen does not seem to respond or move to the very right.

I was trying to use TM 65 so I can clean the top of the laser but ran into this issue.

I can try dissecting the machine and clean and front and back of the laser. this is my next plan. but the fact that TM 65 does not do anything, worries me. Does TM 65 work on your MK2 by any chance?

One other quick question, where did you source the laser if you don't mind asking. I have a different type 2563, so I'll have to double check with the seller but since yours worked, I'd love to get it from a reputable source.

 

have a great weekend!