Identifing ROM on Toshiba MK4026GAX

[DanR]

Hi guys,

Had a drive which didn't spin. Swapped the PCB with an idenical donor. Drive now spins but clicks.

Is there adaptive ROM on these hard drives? (IC12?)

Toshiba
MK4026GAX

[hddguy]

IC12

[DanR]

IC12

Thanks for confirming.

Better be safe than sorry!

[fzabkar]

FYI, there is a fuse (F1) near the end of the IDE connector. D1 appears to be a TVS diode.

[pcimage]

F1 is very common to blow

[DanR]

Thanks guys, Did the ROM transfer and the drive is now imaging.

[Amarbir[CDR-Labs]]

Thanks guys, Did the ROM transfer and the drive is now imaging.

Well,
Great Job

[helpless]

FYI, there is a fuse (F1) near the end of the IDE connector. D1 appears to be a TVS diode.

I have a similar board, can you tell me what fuse and tvs you recommend as a substitute? Or is it easier to go for a board? Thanks.

[fzabkar]

If there is no other damage, then you can remove the diode and bridge the fuse with a blob of solder.

Otherwise ...

Littelfuse Surface Mount Fuses, N = 2A, S = 4A:
http://www.farnell.com/datasheets/48294.pdf

SD05-7, Diodes Inc, marking ZA, 5V, 350W, UNI-DIRECTIONAL SURFACE MOUNT TVS:
http://www.diodes.com/datasheets/ds31594.pdf

[helpless]

Thank you for your help.