Suspect: NVRAM Damage

[shahij]

I've a case HTS541010A9E680

Symptom: No spin up with patient PCB, but come to READY status. Only thing Can be read is NVRAM and ROM with SD Doctor.

Checked with DONOR PCB + PATIENT NVR - Same Symptom, No Spin up but READY.
Checked with DONOR PCB + DONOR NVR - Spin up

Can anyone see the existing condition of the NVR attached with the thread please

Attachments

5410A9.rar

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[michael chiklis]

Inside ROM there are 2 copies of NVRAM:
Copy1 address: from 0x2000h to 0x3000h
Copy2 address: from 0x3000h to 0x4000h

both copies are identical, this means that very likely NVRAM is OK.

[waqas_ali766]

Hi
In hitachi Hard disk Drive, Nvram Damaged chances is very low in case of not spinup.

Mostly the ROM is damaged.
Find same micro code ROM , Add patient NVRAM to Donor ROM. Some time help full


Regards
Waqas Ali

[michael chiklis]

I agree with Waqas