4K040H2

[fujimax]

I am working with 4x 40GB D540X and version 2.34 & spare pcb's.

One drive recorded H=4 and a pcb replacement produced good drive .

One drive is in good order.

However 2 drives record similar, I assume well-known problem - H=1.

loader with native CP10 to ram, (tried also CP10 & CP07) allows to read modules but writing correct pages to disk - fails. Also ldr always reports error on completion.

question : is the pcmx540k.ldr universal to all in family 44 i.e. does
the same loader work for 20,40,60 & 80GB ?

faulty pages found (maybe more) are :

CP06 47 45 4E 45 52 49 43 20
CP08 01
CP13 44 01
CP14 0F 00 03 00 00 00

any ideas ??

question : is the pcmx540k.ldr universal to all in family 44 i.e. does
the same loader work for 20,40,60 & 80GB ?

faulty pages found (maybe more) are :

CP06 47 45 4E 45 52 49 43 20
CP08 01
CP13 44 01
CP14 0F 00 03 00 00 00

any ideas ??

For the amount of drives i have tested, i reach the following concludions:

1 - The pcmx540k.ldr is universal for this family, no matter size and firmware version.

2 - When the drive receives constantly CP8=01 (even after CP re-write), you probably have a physical defected head (generally head 0 is good and head 1 is the problematic one). You can try to exchange the head stack (if data is important) or reduce the hdd size to 20gb ajusting its firmware

Regards,

-BR-

[fujimax]

Hi -BR-,

The pcmx540k.ldr is universal for this family, no matter size and firmware version

I must assume this to be correct, however the loader has never worked correctly on any 44 family drive.

you probably have a physical defected head.....

Something tells me this might not be the case, but you probably are correct.
Data is not important for any of the test drives, but I have noticed no solution on other forums
and would like to get to the nitty gritty of these drives.

I have now studied all the modules of faulty drives with those of a good identical drive and I hope to reach some conclusions as time allows.

e.g. in two cases 60 (p-list) is completely wrong as is D5.

Hopefully I reach some conclusion and will give some feedback.

Any comments would be much appreciated, but I do believe that the single loader file available is faulted - checking this out as well.

What I have found is that only the following modules vary between drives:
71,74,76,D5,0E,08,60,61,65.

Something tells me that the structure of 08 might be important