Maxtor D540X-4D Model numbers

[shaun]

Hi all,
which meaning does the H2,H3 and H4 suffix in Model numbers like 4D080H4 for the D540X-4D disks have? Head count? Will the ROM firmware be identical for different sizes? I've a 4D080H4 here with badly burned PCB, first I wanted to swap the SH6770C, but after desoldering I saw the whole amount of the failure: a hole in the PCB, several tracks gone.
Neither spindle nor VC motor seem to have any damage, and the negative voltage for the head amp is generated externally (not like with the L7250 equipped drives), so I'd give a good chance to recover with a new PCB, preferrably without having to swap the DSP onto a donor PCB.

[pepe]

U can swap PCB in this family if the FW is the same regardless of the head count.
Yes, the last digit in the model number refers to the number of heads.

pepe

[Samo]

As far as I remember the PCB of Maxtor D540X-4D model family is completely interchangeable.

P.S. The 3th letter of the SN also mean the head number.

[shaun]

Thanks to both of you, I've bought one on ebay, as I have only the 7200rpm models sitting around (almost same PCB, but obviously other fw)