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
After I just registered a big hello to everyone out there!
To my person, I am not a hifi specialist but I offered help to my audiophile father-in-law regarding possible help by some B&O Specialists.
And here I am :)
It is as already described in the topic : A recently acquired B & O BEOSOUND 9000 Mk1 which was just perfectly repaired by the mentioned father-in-law - he is now confronted with an incomprehensible problem.
Each time the device is turned on and a CD is selected and raised it doesn’t start playing the CD (CD does not rotate) - then if you choose another one, the CD is loading and will be played without problems
If you jump back to the first CD after this procedure, the cd also works perfectly! After switching off and on again, it starts again with the mentioned problem.
In short: Turning on device - selecting CD - CD is raised but doesn’t spin - nothing happening - selecting any other CD and everything is good, selecting again the first CD - get loaded and plays properly.
All other CDs can be controlled perfectly and will play. After switching off and on again, it starts all over again with not playing the first cd.
Does anyone have an explanation for this problem?
Thanks in advance
Jens
Hi,
I have the same problem sometimes. In my opinion the laser has to warm up and it's Warming up trying to play first CD, then goes to pause, you swithch to another CD and then it's OK. It might be that the first CD quality is slightly worse than the other. Try to replace tchem. But most probably it's the 'Warming up" depending on room temperaturę , humidity etc.
Jens Martin: After I just registered a big hello to everyone out there! To my person, I am not a hifi specialist but I offered help to my audiophile father-in-law regarding possible help by some B&O Specialists. And here I am :) It is as already described in the topic : A recently acquired B & O BEOSOUND 9000 Mk1 which was just perfectly repaired by the mentioned father-in-law - he is now confronted with an incomprehensible problem. Each time the device is turned on and a CD is selected and raised it doesn’t start playing the CD (CD does not rotate) - then if you choose another one, the CD is loading and will be played without problems If you jump back to the first CD after this procedure, the cd also works perfectly! After switching off and on again, it starts again with the mentioned problem. In short: Turning on device - selecting CD - CD is raised but doesn’t spin - nothing happening - selecting any other CD and everything is good, selecting again the first CD - get loaded and plays properly. All other CDs can be controlled perfectly and will play. After switching off and on again, it starts all over again with not playing the first cd. Does anyone have an explanation for this problem? Thanks in advance Jens
I have never heard of lasers needs to warm up... Instead I think that it might need to run the calibration cycle in TestMode.
Looking in the service manual, there are 2 testmodes that always should be run after repairs.
To enter Service Mode
Press SHIFT 9 0 2 5 8 with no more than 2 sec. between the individual entering. The remote control has to be in RADIO or CD option. In test modes the tuner is fully functional and may overwrite the display but the TM will continue. Select CD to view CD test modes
**
TM 27 shows errors.
TM 71 is sledge and glass calibration
Mechanical test of finger protection, sledge and led.
CDs must be loaded in positions 6, 5, 4, 3, 2 but no CD in position 1, (the position nearest the LOAD button). The CD must be stopped and the lid must be shut when the test is activated. The following sequence is executed: - End stop is found, the sledge runs slowly. This tests sledge tacho, sledge motor, calibration of the end stop switch. - Lid opens and closes. This tests optocoupler for glass lid. - Test of finger protection circuit. - The sledge runs the longest possible distance slowly once, then quickly twice. This tests the sledge tacho for phase errors between quad 1 and quad 2 (the finger protection circuit is cut out during the test). When the sledge is running it must run “properly”. - The lid opens. - Autocalibration of CD positions. This tests calibration, disc detector, sledge motor, sledge tacho, clamper motor, clamper optocoupler, and jaws. The clamper is noise-optimized during the autocalibration. - The sledge runs to the original position, i.e. the sledge position prior to activation of sledge test.
TM 73 is auto positioning
Adjustment of autopositioning. Test mode 71 must have been executed. - Press SHIFT 9 0 2 5 8 - Open the lid and load a CD. - The sledge must be placed in the position where the CD is loaded. - Press 7 3 - If the test is OK the display will show: APS ADJUSTED. - If an error has occurred during the test, the applicable error code can be seen during a test mode 27.
I would try to run at least TM 71 and see if that helps.
/Weebyx
I was replacing laser mechanism in BS9000 but didn't run test modes knowing about them. I just hesitated. Thanks to Weebyx advice I run TM71 successfully. Today in the morning ( i wanted to be sure that the laser is "cold") I played first disk and BS9000 started without a problem !!!
Great !!!, Thanks Weebyx ! I Wonder whether Jens Martin will have the same result.
Today I am going to run also TM 73 which is strange for me that "the sledge must be placed in the position where the CD is loaded" - normally the sledge is only in position 1, or you release the sledge in TM 72 so it may go elsewhere. I will inform you then about my remarks.
TM73 is for APS adjustment and requires a cd.
I have just run TM73 by inserting a CD on first position (was free during TM71). The test result was OK and now BS9000 plays normally. I am curious on Jens Martin's results.
TM 73 can be done at any positiion.
If cd's are changed without opening the glasdoor (on the bench for instance), then the stored TOC of the precious cd is different from the new placed cd. That can cause strange behaviour. Maybe this can be the cause of the TS. Changing of cd-position and newly read TOC. Just a thought.
Beobuddy, yes TM 73 can be done at any position but how to move the sledge to e.g. pos.2 ? When you switching test mode the BS9000 has to be switched off so standing in pos 1.
What do you mean as "TOC" and "TS" ?
When the BS9000 is in Testmode, just press the button on the side next to the cd.
TOC, Tabel of Content
TS, Topic Starter.
Being encouraged by Weebyx in running testmodes I have decided to run TM 65 Light pen to outermost position, with no CD inserted. That way you may see the laser lens. During that mode you can open the lid and then take out power plug from mains. Afterwards you may remove the glass lid, remove cover for CD clamper, top plate for CD mechanism and lens f light (9142). So you will access to clean laser lens without the need of clamper arm dismantling.