Hi

I have the following problem:

Model:
ST1000DM003

Terminal message:
--------------------------------
Boot 0x40M
Spin Up
TCC-0018[0x000042F9][0x000042F9]ZZZZMMMMMMMMMMMMMMMZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMddddddWWWMMMMMM
--------------------------------

Detailed description:

We received the PCB with broken seals (someone else tried to change PCB before)
It´s impossible to access terminal (CRTL+Z)
We already did ROM soldering to a DONOR PCB and the result is the same

If I use PATIENT PCB on a donor drive (fully working), same behaviour (same terminal message)
This makes me believe that the ROM is corrupted

Does anyone know if it´s possible to recover data from this case?

Thanks,
-BR-

Read/Write Retry Characters
'Z': TRACK_OFFSET_RETRY_CHAR
'M': MR_BIAS_RETRY_CHAR - MR bias tweak retry character
'd': CLEARANCE_RETRY_CHAR - Clearance value adjusted during recovery
'W': SLIDING_WINDOW_RETRY_CHAR

Problems with the head or surface. If ROM native.

S/N in ROM coincides with the label?

zZZzzzzZZZZzzzZzz

@Tomset
Yes, the ROM SN is the same as the HDA label one.
Thanks for sharing the letters information.

@parkorn16
Would you share how you fixed you case?
Sent you a PM.

-BR-

In my opinion from what you've said, that defenitely is a bad PCB, but not necessarily a bad ROM. Try a donor PCB first, and check the terminal - you may just get FAIL servo messages if trying with nonnative ROM, which is, well, "good".

Problem in pair Heads - Preamplifier