ST500LM000 - determine PREAMP VALUE ?

[DIAGS4711]

Hi,

who can determine the right PREAMP value (see my patient ROM file).
May be with PC-3000 or MRT .....
(Terminal not work -> CTRL + L, hdd is damaged!)

Thanks for help!

Attachments

STR_ST500LM000_Patient_ROM.zip

(650.63 KiB) Downloaded 469 times

[mr_spokk]

Looks like D0 00

[DIAGS4711]

Thanks for help!

I can not find a hdd with the right preamp value.

I could get donor drives with D0 74 / D0 67 and so on (D0 XX serie).

Whats are your experiences with this hdd ?, other persons says take any hdd with D0 and XX value).

[digisupport]

Any D0 XX should work just fine.

[michael chiklis]

pre amp value indicated in your rom is D0 00

[DIAGS4711]

Thanks to mr_spokk, digisupport and michael chiklis.

I will test new heads with a D0 XX PREAMP.

Question the PREAMP bytes are not a fixed offset !? (as far as I know).

How can i calculate the right position ?
Or is the right position in a another byte offset like MR jogs (WD - mod. 47 0x20).

Thanks for any info.

[pcimage]

Any D0 XX should work just fine.

+1 agree

[fzabkar]

Locating the preamp ID in a Seagate F3 ROM:
http://www.hddoracle.com/viewtopic.php?f=59&t=2173&start=60#p18028

[DIAGS4711]

Thanks, i find the oracle post yesterday.

I find now a compatible head-stack, and can copy data.

But i have to many read errors (heavy head-stiction) and can not clear the g-list.
Media cache and so on are disabled, i have the mods, but can not copy0 sys file 1b
(copy1 are ok).

Thanks for any help!

Terminal output:___________

F3 T>i4,1,22
i4,1,22

RECOV Servo Op=0055 Resp=0005

SIM Exception Code: 0005

LED:000000BC FAddr:0000905B
Rst 0x40M
Servo Processor Is Reset.

Spin Up

Spin issued


RECOV Servo Op=0100 Resp=0005
TCC:001C
RECOV Servo Op=0165 Resp=0005

LED:000000BC FAddr:0000905B

[mr_spokk]

Try clone one head at the time, maby head 0 need another swap?