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Old 29th February 2012, 04:24 AM   #11
amc184 is offline amc184  New Zealand
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Quote:
Originally Posted by tiefbassuebertr View Post
You need the SM from CDM2 and CDM4 transport mechanism include servo section.
No if you're working on a Arcam Alpha One you don't. This player uses a Sony KSS-240A. If your player has a CDM-4 then it's the vastly different Arcam Alpha (with no 'one').

Besides, orix102's problem has nothing to do with the transport, it's an issue with the DAC.
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Old 29th February 2012, 10:17 AM   #12
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Quote:
Originally Posted by amc184 View Post
No if you're working on a Arcam Alpha One you don't. This player uses a Sony KSS-240A. If your player has a CDM-4 then it's the vastly different Arcam Alpha (with no 'one').

Besides, orix102's problem has nothing to do with the transport, it's an issue with the DAC.
Yes, there are versions with different equipment:
Arcam Alpha I with Philips CDM4 amd Philips SAA/TDA parts for Servo, MCU and decoding
Inside Classic Audio: Arcam Alpha
Arcam Alpha ONE with Sony mechanism and laser head KSS240A (14th image)
Oportunidades Básicas

By the version with SONY optical head and SONY ICs one must find out the associated SONY model to get a helpful service manual (service manuals from the english brands rather simplified schematics and often incomplete).

Last edited by tiefbassuebertr; 29th February 2012 at 10:21 AM.
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Old 29th February 2012, 11:24 AM   #13
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Quote:
Originally Posted by tiefbassuebertr View Post

By the version with SONY optical head and SONY ICs one must find out the associated SONY model to get a helpful service manual (service manuals from the english brands rather simplified schematics and often incomplete).
By post #3 about
Sony KS-240A Focus OK Signal Check
there are mentioned various SONY models
check also this threads:
Arcam Alpha 9 - Help Needed
KSS-240A only Service Bulletin available but DS for the associated Mechanism wanted

Last edited by tiefbassuebertr; 29th February 2012 at 11:42 AM.
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Old 29th February 2012, 04:42 PM   #14
amc184 is offline amc184  New Zealand
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Quote:
Arcam Alpha I
No, there is no 'I', no '1' or 'One', there is nothing, it is called an Arcam Alpha. They are not different versions, they are completely different players and were released some time apart. The blog you quoted is written by me, I'm fairly familiar with it.
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Old 29th February 2012, 07:26 PM   #15
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Quote:
Originally Posted by amc184 View Post
No, there is no 'I', no '1' or 'One', there is nothing, it is called an Arcam Alpha. They are not different versions, they are completely different players and were released some time apart. The blog you quoted is written by me, I'm fairly familiar with it.
about Arcam's homepage
Discontinued Products
this (and some other) model isn't mentioned
I think, you mean either the device from the first two attached pics, found by ebay item number 330647951301
(on the rear side no model number is to read at any sticker) or the third pic, also without 'I', '1', 'One' or any other additional number resp. suffix.

Do you now a website, where is to find a complete list of all exist models?
Attached Images
File Type: jpg Arcam alpha front.JPG (117.5 KB, 78 views)
File Type: jpg Arcam alpha rear.JPG (136.2 KB, 73 views)
File Type: jpg Arcam Alpha front II.jpg (67.3 KB, 72 views)

Last edited by tiefbassuebertr; 29th February 2012 at 07:36 PM.
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Old 2nd March 2012, 04:09 PM   #16
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I too have one of these "Arcam Alpha One" that tiefbassuebertr has posted here in his first pic. It seems the only place the "One" is written is on the CD drawer. Furthermore, like irishiranian, the CD has trouble starting up. I have taken the lid off and it is possible to give the CD a flick and it usually gets going, but not really a solution.

I am still not clear however who's transport we think it uses? Who might supply whichever transport it is in the UK?

Thanks.
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Old 2nd March 2012, 10:54 PM   #17
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Originally Posted by simple simon View Post
I too have one of these "Arcam Alpha One" that tiefbassuebertr has posted here in his first pic. It seems the only place the "One" is written is on the CD drawer. Furthermore, like irishiranian, the CD has trouble starting up. I have taken the lid off and it is possible to give the CD a flick and it usually gets going, but not really a solution.

I am still not clear however who's transport we think it uses? Who might supply whichever transport it is in the UK?

Thanks.
That sounds like a stiff motor shaft from your Mabuchi spindle motor (disc motor).
The shaft needs lubrication. If you observe a success, replace the spindle motor that must have similar outline than that one from the jpg attachement.
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File Type: jpg Mabuchi Spindle motor.jpg (13.2 KB, 64 views)
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Old 7th March 2012, 12:55 PM   #18
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Quote:
Originally Posted by tiefbassuebertr View Post
That sounds like a stiff motor shaft from your Mabuchi spindle motor (disc motor).
The shaft needs lubrication. If you observe a success, replace the spindle motor that must have similar outline than that one from the jpg attachement.
I dug it out (ARCAM Alpha One) from the bottom of the mending pile and had a poke about and it is worse than I remembered. Now, although the CD tray goes in, the hinged laser/PCB/motor assembly does not come up fully and engage with the cd. There seems to be something in the way in an area I cant see as I cannot push it up to engage either. It feels like some tab that is meant to flick out of the way isnt. Of course it is all happening in an area you cant see into.

Any ideas? Can one source the whole assembly and replace it?
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Old 7th March 2012, 01:27 PM   #19
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Quote:
Originally Posted by simple simon View Post
I dug it out (ARCAM Alpha One) from the bottom of the mending pile and had a poke about and it is worse than I remembered. Now, although the CD tray goes in, the hinged laser/PCB/motor assembly does not come up fully and engage with the cd. There seems to be something in the way in an area I cant see as I cannot push it up to engage either. It feels like some tab that is meant to flick out of the way isnt. Of course it is all happening in an area you cant see into.

Any ideas? Can one source the whole assembly and replace it?
Please let me know follow:
What do you read on the sticker from your loader?
Which optical pick-up is in use (maybe from Sony's KSS series) ?
Which ICs are in use on the main board (servo processor, RF-amp, PCM decoder) ?
After we know this, next step is to find out the appropriate cd player model resp. hifi system, e. g. from Sony, which use the same parts - at least the same loader model.
In the associated service manual to one of this models you probably will find the detailled advices concerning the theory of operation - even from the loader and mechanism.

Descriptions and manuals of cd players "Made in U.K." are known, that they are not particularly detailed.
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Old 9th March 2012, 08:45 PM   #20
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Quote:
Originally Posted by tiefbassuebertr View Post
Please let me know follow:
What do you read on the sticker from your loader?
Which optical pick-up is in use (maybe from Sony's KSS series) ?
Which ICs are in use on the main board (servo processor, RF-amp, PCM decoder) ?
After we know this, next step is to find out the appropriate cd player model resp. hifi system, e. g. from Sony, which use the same parts - at least the same loader model.
In the associated service manual to one of this models you probably will find the detailled advices concerning the theory of operation - even from the loader and mechanism.

Descriptions and manuals of cd players "Made in U.K." are known, that they are not particularly detailed.
The laser is a KSS-240A and the spindle motor has partnumber RF-310T-11400

There seems to be at lest two problems.

1) The motor that pulls the tray also lifts the laser and spindle motor to the CD via a cam arrangement in a turning cylinder. For some reason it gets stuck half way. The tray motor valiantly continues trying for a while and then gives up. If I give it a helping hand by turning the large gear which also turns the cam the laser/spindle it comes up as it should to engage with the CD.

2) Next the spindle motor gives the faintest of kicks and then gives up. Flicking the CD to get it going does nothing. So it could be that the motor is dead or something wrong with the control signal and/or supply

Given there are at least two problems perhaps I should be looking for a new whole transport/tray/laser/spindle thingy?

Simon.
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