ST3000DM001 need help to find a donor drive

[mojimorady]

hello everyone,

there is a Seagate drive with head clicks, the model is ST3000DM001 , FW:CC46, PN: 1Er166-515 as you see all the details are very normal but the PCB No. is : 100762568 REV A .

I replaced the head with a 100% functional one (same Model , same F/W and even very close PRE AMP code) but it still has clicks , I put back the donor heads to the the original drive , they work fine.

now the question is : should the donor drive has a similar PCB No. too ?????

regards