WD10EACS power on and off, hot swapped check modules ok

[Nova]

Hi guys

I have WD10EACS which power on and off, when i hotswap with identical pcb I could check all modules with UDMA and all seems to be fine except:
-When try to extract data using DE clone/reverse clone all "Black" block unable to access data.
-Check head found head 2, 6 and 7 failed

My question is , are these heads really tested as failed or because I hotswapped the pcb and wrongly tested as failed?
Tried head map (disable 2, 6 and 7)and clone wont work. Or do I have no choice except Head exchange? This damn drive is hard to come by so have to make sure it is ncessary.
I will post the pcb photo later, it is i think first generation WD10EACS with square marvell pcb, strangely UDMA detected the drive, but not the triangle pcb.

Thanks for any help.

[Vadim]

First of all, could you tell the full name of this drive? Because it's so important to gain a better understanding a family name. See MDL line. There is WD10EACS-xxZJB0 or anything like that. As you know ZJ is a family code. For example ZJ is Hulk.

The second. You should check heads of this HDD. For that try to use exception method. Then you switch off all heads except one and try to switch on power. If your drive start knocking then this head is BAD. If NO then OK! And the same for the next one up to last head.

I can suppose your drive has ten heads and one of them is BAD. Which one?

[Nova]

Hi Vadim
Thank you for your reply.
The model is WD10EACS-00ZJB0

Here's the test conducted using PC3000 UDMA:

Using the Original PCB, it does not read readiness but i can check the following:

Techno mode key
Techno mode key......................... : Ok

RAM:
Zone allocation table................... : HDDs RAM reading error Techno CMD sending error Device Error Detected: "VSCE PERM OVL NOT LOADED"
SA SPT.................................. : SA SPT determination error Techno CMD sending error Device Error Detected: "SERVO ERROR CODE BASE SvirCalRRO Hd2"

Head number reading..................... : Ok
Heads number............................ : 8

ROM:
Flash Dir reading....................... : Ok
ROM reading............................. : Ok
ROM Data size........................... : 192 Kb
ROM version............................. : 5C.32G
ROM generation.......................... : 5C.32G
Link table version...................... : 01.37.
Heads configuration..................... : by map
Heads number............................ : 8
Heads number in use..................... : 8
Switched off heads...................... : No
Head map................................ : 0,1,2,3,4,5,6,7

Firmware version........................ : 005C0032

Service area:
SA dir reading.......................... : Unknown error. Code(0)
SA Defects reading...................... : Ok
SA Copies avalabled..................... : NONE

Configuration reading................... : Module 02 not found

Head Map Changing with original PCB

Head 0 Reach readiness DRD DSC
Head 1 Reach readiness DRD DCS
Head 2 Reach readiness DRD DCS but soft clicking
Head 3 Reach readiness DRD DCS
Head 4 Reach readiness DRD DCS
Head 5 Reach readiness DRD DCS
Head 6 Reach readiness DRD DCS
Head 7 Reach readiness DRD DCS


Then i use Donor PCB hotswap, then test head:

Head 0 Reach readiness DRD DSC
Head 1 Reach readiness DRD DCS
Head 2 Does not reach readiness DRD DCS ERROR
Head 3 Reach readiness DRD DCS
Head 4 Reach readiness DRD DCS
Head 5 Reach readiness DRD DCS
Head 6 Reach readiness DRD DCS
Head 7 Reach readiness DRD DCS