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 Post subject: IBM DKLA-24320 motor stuck
PostPosted: January 11th, 2019, 5:25 
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Joined: August 3rd, 2012, 7:47
Posts: 341
Location: slovenija
Hello,

I receive this drive for recovery.
On power on hear just sirene sound.
I measure motor pads on PCB and there is power on all four pads.
I try with another drive to simulate motor stuck to hear sound and is identical to patient.

Here is the question:
Is typical for this drives that motor stuck and how to unstuck it?
how is on this drives if you open the lid with alignment, and in case if I will need to move platters to donor drive.

Thank you


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 Post subject: Re: IBM DKLA-24320 motor stuck
PostPosted: January 11th, 2019, 8:36 
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Joined: December 19th, 2006, 8:49
Posts: 10828
Location: Portugal
I would start by trying to replace PCB just to be sure that you don't have some sort of spindle controller problem, etc ...

If drive sounds the same with another PCB open the drive and make sure that heads are not stuck to platter ...

If heads are not stuck and problem is indeed with spindle i can't help further ....

Those drives shouldn't pose any major problem when opening the lid (unlike old WD drives). You can open the lid for inspection (of course inside HEPA 100 aseptic room, blá, blá ....) but don't remove platters without further comments from other members .... Maybe you can use some "trick" to unstuck spindle if it's indeed stuck ...

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 Post subject: Re: IBM DKLA-24320 motor stuck
PostPosted: January 11th, 2019, 14:10 
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Joined: August 3rd, 2012, 7:47
Posts: 341
Location: slovenija
Thank you very much Spildit .

Regarding PCB: is PCB number enough or I need to put attention also on sticker.

Thank you


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 Post subject: Re: IBM DKLA-24320 motor stuck
PostPosted: January 11th, 2019, 14:32 
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Joined: December 19th, 2006, 8:49
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Location: Portugal
jerovsek wrote:
Thank you very much Spildit .

Regarding PCB: is PCB number enough or I need to put attention also on sticker.

Thank you


You should have same ROM and NVRam but as long as PCB number is the same it should SPIN the drive and if it does SPIN the drive then problem is with PCB .... You can try to match Sticker letters (on PCB).

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 Post subject: Re: IBM DKLA-24320 motor stuck
PostPosted: January 11th, 2019, 14:33 
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Joined: January 10th, 2019, 14:26
Posts: 13
Location: Buffalo, NY
If there is a sticker on the board with a different PCB revision, match to that.

As far as the label on the top cover that shouldn't matter, these drives have an issue where they will "lock" the donor board if it is incompatible, make sure you transfer the firmware to the new board before installing it on the patient.

Old IBM drives have a lot of issues with burned PCB components, its possible you may have damage to spindle driver chip.


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 Post subject: Re: IBM DKLA-24320 motor stuck
PostPosted: January 14th, 2019, 5:15 
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Joined: August 3rd, 2012, 7:47
Posts: 341
Location: slovenija
I measure voltages and varray from 2.5V to 5V
I measure on patient and on possible donor.


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 Post subject: Re: IBM DKLA-24320 motor stuck
PostPosted: January 15th, 2019, 4:31 
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Joined: August 3rd, 2012, 7:47
Posts: 341
Location: slovenija
Dear Spildit and irepair,

thank you for your suggestion and help.

Case is solved.

Problem was on PCB.


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 Post subject: Re: IBM DKLA-24320 motor stuck
PostPosted: January 15th, 2019, 19:58 
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Joined: December 19th, 2006, 8:49
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Location: Portugal
Cool !!!!!! :D

I was correct this time !!!!

:mrgreen: :mrgreen: :mrgreen:

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