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 Post subject: Yet another Samsung problem
PostPosted: April 29th, 2008, 22:47 
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Joined: August 8th, 2007, 6:32
Posts: 1238
Location: inside ROM
Have you guys seen this error, what does it mean?

Samsung SP1604N with this terminal error:

SpnOk
DAC:-00245
H: +00000
UF: 1. 1st Gray err
H: +00001
UF: 1. 1st Gray err
H: +00002
UF: 1. 1st Gray err
H: +00003
UF: 1. 1st Gray err
H: +00000
UF: 1. 1st Gray err
H: +00001
UF: 1. 1st Gray err
H: +00002
UF: 1. 1st Gray err
H: +00003
UF: 1. 1st Gray err
ENG>SRV>

Thanks


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 Post subject: Re: Yet another Samsung problem
PostPosted: April 30th, 2008, 10:16 
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Joined: January 29th, 2005, 22:58
Posts: 637
Location: Canada
Dead PCB or dead preamp.


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 Post subject: Re: Yet another Samsung problem
PostPosted: April 30th, 2008, 11:30 
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Joined: June 27th, 2005, 8:27
Posts: 615
Location: India
Head Gone.

DF :)

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DF :)
www.datatracksystem.net


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 Post subject: Re: Yet another Samsung problem
PostPosted: April 30th, 2008, 13:58 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
I vote for PCB or preamp, though this is not all about voting :)

check the drive with another PCB of the same model regardless of FW revision, if the terminal gives the same, preamp is gone.

pepe

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Adatmentés - Data recovery


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 Post subject: Re: Yet another Samsung problem
PostPosted: April 30th, 2008, 16:59 
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Joined: July 18th, 2006, 3:05
Posts: 7476
Location: ITALY
Either preamp, head or firmware issue (yes, could be)

Does the drive knock at startup or calibrate ?

You can easily test for data out of the preamp (quantitative, not qualitative) and the relevant signals on the PCB with 150 Mhz or more bandwidth scope.
I have discussed this kind of test about two years ago, probably not here... I can't remember.

Regards.


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 Post subject: Re: Yet another Samsung problem
PostPosted: April 30th, 2008, 16:59 
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Joined: July 18th, 2006, 3:05
Posts: 7476
Location: ITALY
Either preamp, head or firmware issue (yes, could be)

Does the drive knock at startup or calibrate ?

You can easily test for data out of the preamp (quantitative, not qualitative) and the relevant signals on the PCB with 150 Mhz or more bandwidth scope.
I have discussed this kind of test about two years ago, probably not here... I can't remember.

Regards.


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 Post subject: Re: Yet another Samsung problem
PostPosted: April 30th, 2008, 17:11 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
Hi,

with such report the drive must be clicking, but let TerraNova answer this question for sure.
Since it is apparent that the drive cannot access any of its heads - most probably preamp is not functioning due to either its own damage or due to lack of proper alimentation from the pcb - Starling an me were suspecting preamp or PCB problem in the first run.

pepe

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Adatmentés - Data recovery


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 Post subject: Re: Yet another Samsung problem
PostPosted: April 30th, 2008, 21:41 
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Joined: August 8th, 2007, 6:32
Posts: 1238
Location: inside ROM
Does the drive knock at startup or calibrate ? yes it knocks at startup, no it wont calibrate.

Thank's guys, will keep you posted ....


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 Post subject: Re: Yet another Samsung problem
PostPosted: May 3rd, 2008, 23:38 
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Joined: August 8th, 2007, 6:32
Posts: 1238
Location: inside ROM
yes its the head as i swapped with SP1614C (SATA) i got the same errors on terminal.

Can I use SP1614C (patient drive is SP1604N) HDA? Both have the same P/V MS and the donor drive is SATA.

Thank's


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 Post subject: Re: Yet another Samsung problem
PostPosted: May 4th, 2008, 9:22 
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Joined: July 18th, 2006, 3:05
Posts: 7476
Location: ITALY
If no further investigation on the MC is possible in emg. mode , you get no signal at the HSA connector (checked w/ scope or logic analyzer ?) and you are sure it's not a firmware problem , then HSA swap could be the last resort.
Anyway I had some drives with same symptoms fixed : simple firmware issue (the sw on the MC and the code didn't match anymore) , but I was going only to repair the drive not DR.


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 Post subject: Re: Yet another Samsung problem
PostPosted: May 4th, 2008, 21:50 
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Joined: October 21st, 2005, 0:45
Posts: 1517
Location: Mexico
Hy terranova did u check the preamplifier circuit or flex from MHA number its same between donnors?


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 Post subject: Re: Yet another Samsung problem
PostPosted: May 5th, 2008, 12:48 
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Joined: October 3rd, 2005, 0:40
Posts: 4753
Location: Hungary
Hi,
Have u checked with another PCB?

pepe

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 Post subject: Re: Yet another Samsung problem
PostPosted: May 5th, 2008, 20:59 
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Joined: August 8th, 2007, 6:32
Posts: 1238
Location: inside ROM
Yes Pepe, same results on terminal. click click 8 times and power down.
The donor drive i used is SP1614C, just wondering if it is compatible with the patient HDA, both have the same P/V MS.

Thanks


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