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 Post subject: Re: HD103SJ dead
PostPosted: December 1st, 2019, 14:32 
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BGman wrote:
If it's a real FIPS problem, command EI should fix it.

I posted this potential solution at the HDD Oracle, but received no feedback. Have you verified that it works?

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 Post subject: Re: HD103SJ dead
PostPosted: December 1st, 2019, 20:35 
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Joined: November 29th, 2019, 18:05
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BGman wrote:
command EI should fix it.

How do I use 'EI' correctly - just enter it without arguments? Should I give it a try?

BTW: I sent commands SU and SD to start and stop the motor and they worked. Got them from here: https://forum.hddguru.com/viewtopic.php?t=26366


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 Post subject: Re: HD103SJ dead
PostPosted: December 2nd, 2019, 3:36 
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Joined: September 30th, 2005, 7:33
Posts: 685
fzabkar wrote:
Have you verified that it works?

No. I don't have such a drive.

"DI" = Dump Image
"MI" = Modify Image
"EI" = Erase Image

"DI 64" = show Heads Map
"MI 64 FF" = unlock all heads
"DI 0 4" should return ASCII of IF SP (FIPS header)
Commands are valid for some (Trinity) models....


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 Post subject: Re: HD103SJ dead
PostPosted: December 2nd, 2019, 15:01 
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@eNDi, try the "DI 0 4" command.

Then try "DI 0 400"

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 Post subject: Re: HD103SJ dead
PostPosted: December 4th, 2019, 15:23 
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"DI 0 4" returns only zeros:
Code:
DI 0 4
I:00000000 0000 0000 0000 0000


"DI 0 400" returns for addresses 0x0000 to 0x03ff always 0x0000, and for addresses 0x0400 to 0x07ff the 32bit address itself following a 0x4eed 0000:
Code:
I:00000000 0000 0000 0000 0000 0000 0000 0000 0000
...
I:000003F0 0000 0000 0000 0000 0000 0000 0000 0000
I:00000400 0400 0000 4EED 0000 0408 0000 4EED 0000
...
I:000007F0 07F0 0000 4EED 0000 07F8 0000 4EED 0000


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 Post subject: Re: HD103SJ dead
PostPosted: December 4th, 2019, 15:34 
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Did you use the EI command? That would explain why the data are all zeros. Am I correct in assuming that the drive is still not working?

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 Post subject: Re: HD103SJ dead
PostPosted: December 4th, 2019, 19:51 
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I didn't use EI - I didn't want to erase it before you said "go" :)
And yes, the drive is still not working.
At least I got it to spin up with 'SU'.


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 Post subject: Re: HD103SJ dead
PostPosted: December 5th, 2019, 11:09 
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Posts: 685
I would try resoldering of the FLASH chip. It's easy and safe.


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 Post subject: Re: HD103SJ dead
PostPosted: December 9th, 2019, 16:03 
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I resoldered the flash but nothing changed - flash contents are still zeroes.


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 Post subject: Re: HD103SJ dead
PostPosted: Yesterday, 6:18 
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Should I try to read the flash? Is it possible to access it in-circuit by shorting a reset-line or osc, or do I have to remove the IC from the PCB?


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 Post subject: Re: HD103SJ dead
PostPosted: Yesterday, 6:56 
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Joined: September 30th, 2005, 7:33
Posts: 685
Could you post the response of your drive to "DV" terminal command and/or the startup output.
Have you tried any sort of burnin procedure (downloading any kind of BI code) ?


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 Post subject: Re: HD103SJ dead
PostPosted: Yesterday, 14:56 
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I didn't try anything with this drive, these are very my first steps.

Startup output is:
Code:
*PA VID=0000 PN=0004 Rev=0002- 785x Found*PA VID=0000 PN=0004 Rev=0002- 785x FoundChipRev = 63B0U
S_0
[DEBUG HALT @MDL_RSRC_BufferAlloc():10034A95 L0 1003A451]

RV En Sensor Circuit
En Shock Sensor Circuit


response of "DV":
Code:
DV
[SHOS2:1AJc3suM.d26|c3su_.009u_ HPCSF:3.26.1.7.0 0MB SoC:63B0 Ch:0920]
[FLAGs:00000000 00000000][CMD:00000000][RESET:00000000][TIME:38 38]

   ID     EVENT_WAIT_FLAGS  ST PR CODEADDR STACKPTR RET_ADDR FREESTACK
Serial  : 00000000_00000000 00 00 00000376 040061A0 040061EC 000000D8<-
HostXfr : 00000800_00000000 01 01 10034A2B 04006640 04005ED8 00000038
CmdDisp : 00000000_00000020 01 01 00002398 04006A60 0000853F 00000018
RdWr    : 00000800_00000000 01 01 10034A2B 04006DC8 0001C138 000000B0
BkGrnd  : 00000800_00000000 01 01 10034A2B 04007400 00014000 00000078
Partol  : 00000000_00000000 02 01 0000858A 040075F0 A5A5A5A5 00000008
EV:00000004_00200000
[DEBUG HALT @MDL_RSRC_BufferAlloc():10034A95 L0 1003A451]


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 Post subject: Re: HD103SJ dead
PostPosted: Today, 2:14 
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[SHOS2: 1AJc3suM.d26 |c3su_.009u_ HPCSF:3.26.1.7.0 0MB SoC:63B0 Ch:0920]

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 Post subject: Re: HD103SJ dead
PostPosted: Today, 2:57 
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Joined: September 30th, 2005, 7:33
Posts: 685
I see a problem. The drive reports 0MB DRAM instead of 32MB. Maybe DRAM chip is damaged. This could explain why FIPS is all zeroes (during the startup drive copies FLASH to DRAM). The solution is to find a good PCB and to transfer the FLASH chip.


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