BeoSound 9000: no spinning & test mode result [SOLVED]

20 replies

KolfMAKER

Bronze

569 posts

Posted March 23, 2024 at 05:30 GMT ? Edited May 4, 2024 at 12:45 GMT

I have a BeoSound 9000 that won't start playing a CD. When selecting a CD, it makes the move to the selected CD, it clamps the CD, but the CD won't start spinning. When keeping an ear close, there is a slight clicking noise that repeats. Finally after a few seconds the display shows 'PAUSE'. What I have done:

Turn the system off and unplug it for a while, then plug it in again > No result.
Check the screws in the back panel, if they are in the position corresponding to the position of use of the BS9000; in my case now flat on a table. > The screws are in the right position.
Sensor cams. I have read that the two cams between the glass and the face panel might be dirty. I cleaned them with Isopropyl, and I also cleaned the glass and the face plate. > No result.
Test Mode for CD mechanism test. I put the BS9000 in Test Mode with a Beo4 (Shift>9>0>2>5>8) and run #27 to test the CD mechanism. Here are the results:
- NO ML ERROR
- 1 IIC ERR104 = The 35IC2 motor processor
- 1 CD ERR 2 = Focus error, it has not been possible to find focus.
- NO SER ERROR
- 1 SLG ERR 31 = microprocessor 35IC2 cannot register pulses from 9PE1.
- NO PLT ERROR
- 1 APS ERROR 15 = it has taken more than 5 seconds to carry out auto positioning. The turntable motor driver might be defective.
- 1 PWR ERR 20 = Mains drop-out while the sledge was moving.

I have read that the behavior my BS9000 has, in some case ha been solved by replacing the laser unit. But I just want to be sure if that or something else will solve it. My questions

What can I make of the result of run #27? (since there are several errors, I am not sure which one needs attention)
Are there any other Test Mode runs I should do?
Could it still be a dirty laser lens that I should clean?

Location: The Netherlands

My B&O Icons:

matador

BronzeModerator

2424 posts

Posted March 23, 2024 at 20:57 GMT

#708599

Typical of a faulty laser…

Location: Paris France

KolfMAKER

Bronze

569 posts

Posted March 24, 2024 at 10:08 GMT

#708610

Thnx @Matador ! It’s also my guess that the laserunit needs replacement. Question

Is there any other test run I can make in Test Mode, to confirm that?
Do you know any reliable source to order the right replacement part for this BS9000 MK1 type 2561?

Location: The Netherlands

My B&O Icons:

matador

BronzeModerator

2424 posts

Posted March 24, 2024 at 11:33 GMT

#708612

No, I think you've done them all.
For MK1 I don't know. I think I remember the laser was specific or not anymore available, but I may be wrong. Lot of topics about that on BW2 I think. I would try a deep clean of the lens: lens up and down and mirror.

Location: Paris France

KolfMAKER

Bronze

569 posts

Posted March 24, 2024 at 16:59 GMT ? Edited March 25, 2024 at 11:16 GMT

#708622

I have come to the point that I have disassembled enough to have full access to the laser unit. What I noticed is this part ... The middle: The outer ring: Question 1 It is very dirty. I think this is just the clamp and the dirt does not affect the laser/reading of the disc. Is that right? Laser unit I have uncovered the laserunit. What I can see is the lens, which I will clean with isopropyl. Question 2 Besides cleaning the lens here, is there anything else I should clean?

Location: The Netherlands

My B&O Icons:

KolfMAKER

Bronze

569 posts

Posted March 26, 2024 at 16:00 GMT ? Edited March 26, 2024 at 16:00 GMT

#708686

I have disassembled the laser/lens/mirror unit, and did a cleaning according to the After cleaning and re-assembly I did a CD play test, unfortunately with still the same error as when I started. After that I did a TestMode run #27 again. Interestingly with some different results than when I did this run before cleaning. Here's the differences: Before cleaning:

NO ML ERROR
1 IIC ERR104 = The 35IC2 motor processor
1 CD ERR 2 = Focus error, it has not been possible to find focus.
NO SER ERROR
1 SLG ERR 31 = microprocessor 35IC2 cannot register pulses from 9PE1.
NO PLT ERROR
1 APS ERROR 15 = it has taken more than 5 seconds to carry out auto positioning. The turntable motor driver might be defective.

After cleaning:

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

So, it's positive that most errors are gone. Though a pity that it still doesn't play. My questions

I guess there is only one thing left; replacing the laser/lens/mirror unit. Correct, or are there still other possibilities?
If I need to order a replacement laser/lens/mirror unit, where can I find it? And where can I trust it is the right one and working? (I need it for a BS9000 MK2, type 2561)

Location: The Netherlands

My B&O Icons:

matador

BronzeModerator

2424 posts

Posted March 26, 2024 at 16:44 GMT ? Edited March 26, 2024 at 16:45 GMT

#708687

Can't tell about the focus error. Focus error is usually because of a dirty lens. It may worth double checking the cleaning and the mounting of the part maybe. The maser for MK2 is from memory CDM 12.05 but you often just need to change the eye part (orange part in the picture). there is a reference number printed on the triangle part near the connector – EF-20 – you should go after the same part. Member Marexy who has bought tons of them on eBay told us it was kind of a lottery: some do work other don't. I've experienced myself some that work but with a high pitched noise disturbing at low listening levels. Maybe a reputable source would work better. Good luck.

Location: Paris France

KolfMAKER

Bronze

569 posts

Posted March 26, 2024 at 18:03 GMT ? Edited March 26, 2024 at 18:05 GMT

#708690

Thnx @Matador ! You are referring to the “orange part in the picture”. Do you mean the orange PCB and its flatcable?

Location: The Netherlands

My B&O Icons:

matador

BronzeModerator

2424 posts

Posted March 27, 2024 at 08:28 GMT

#708708

This is the thread I was referring to. Unfortunately for MK3 but may help someone one day…
Location: Paris France

KolfMAKER

Bronze

569 posts

Posted March 27, 2024 at 13:03 GMT

#708714

Update further testing & checking In TestMode I now also checked: #61 Focus ON = CD FOCUS ON = OK #62 Focus OFF = CD FOCUS OFF = OK #63 Start of CD turntable motor = TURNTBL ON works but a lot of noise. #64 Stop of CD turntable motor = TURNTBL OFF works but a lot of noise. #65 Laser arm is moved to extreme outside position = LIGHTPEN OUT = OK #66 Laser arm is moved towards the centre = LIGHTPEN IN = OK #67 Starting the CD = CD ERROR 2 = Focus error, it has not been possible to find focus. So ... At least I know the motor works fine, and the laser arm makes the correct movements. Starting the CD keeps showing 'CD ERROR 2' so still the focus error. In the Service Manual I read that when in TestMode #65 (lighten in outside position), the light pen can be seen. when test mode 65 is executed. 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?

Location: The Netherlands

My B&O Icons:

Join BeoWorld

Become a Member

December 2026 Prize Draw

Gold Members Only

As a Gold member you're automatically entered into our exclusive prize draw — your chance to win iconic Bang & Olufsen products. A unique benefit of BeoWorld Gold membership, every draw brings a new opportunity to win something special.

View Prize Go For Gold