WRONG VOLTAGE - WDC 2060-810011-001 P1

[gps31]

Did you first try the donor PCB with its own ROM? Yes (No Swap)

Could it be a stiction case? No Checked

could you please measure the Va and Vb voltages? Pls Let me Know Exact Location


Could we see a ROM dump? Today will upload with external program backup. Is all three Dumps required?

[fzabkar]

Va and Vb are marked in the photo clip.

All 3 ROM dumps would be nice. It might be instructive to compare the patient and donor ROMs, too.

[gps31]

PATIENT ROMS

WD40EDAZ-11SLVB0-ROMS.rar

(352.38 KiB) Downloaded 543 times

Will upload donor ROM later today

[gps31]

[gps31]

This donor PCB ROM

Attachments

Donor.rar

(383.83 KiB) Downloaded 518 times

[gps31]

Transferred All Three Flash Chips to New Board Still NO SPIN.
In this also Va=0.51v and Vb=11.97v

With these Patient ROMs Donor HDD Spining.
When HDD Spin Va= -19v and Vb=11.97v

[Lardman]

Did you first try the donor PCB with its own ROM

Have you tried the donor PCB with donor ROM on the patient - does the patient spin?

[gps31]

Did you first try the donor PCB with its own ROM

Have you tried the donor PCB with donor ROM on the patient - does the patient spin?

yes tried but failed to spin

[Lardman]

Can you check the resistance between the spindle motor windings (4 test points). It's not likely to be sticktion on a 3.5 inch drive, but either way it's all pointing towards and internal problem so far.

[fzabkar]

Thanks for the voltage measurements. That circuit does look like the power supply for the piezoactuator. However, it appears that I was wrong about the "transformer" -- it is probably just an ordinary inductor. The circuit topology is hidden inside the motor controller, but is probably similar to this (WD20PURZ-85GU6Y0, 2060-771945):

https://groups.google.com/group/datarecoverycertification/attach/29cc96b30fbc6/IMG_5100.jpg?part=0.1&view=1

Those two 4MB flashes have identical contents, but they are mostly empty. Most of the data consists of 0x400-byte blocks with an "HGl" or "HG" header.

The first 0x200 bytes appear to contain two 16-byte values (keys ?) at offsets 0xF0 and 0x1F0.

Code:

Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000000  00 00 00 00 AD CB BC DA 02 00 00 00 11 00 00 00
00000010  00 00 CC 00 00 00 00 00 01 06 02 00 06 00 00 00
00000020  10 00 00 00 40 03 00 00 06 00 02 00 01 01 00 00
00000030  00 00 00 00 B8 03 00 08 04 04 10 01 10 00 00 00
00000040  3F 08 11 1F 40 03 00 00 00 01 00 01 00 01 00 00
00000050  3F 06 00 00 50 03 00 00 40 03 00 00 06 00 02 00
00000060  01 01 00 00 01 00 00 00 B8 03 00 08 04 04 10 01
00000070  50 03 00 00 80 06 00 00 00 01 00 01 00 01 00 00
00000080  3F 06 00 00 6A A3 BA 52 00 00 00 00 00 00 00 00
00000090  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000000A0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000000B0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000000C0  00 00 00 00 00 00 00 00 C0 99 58 01 00 00 00 00
000000D0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000000E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000000F0  90 FF 5E D3 64 B4 EC 99 26 38 5E 17 03 A5 68 69
00000100  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000110  00 00 00 00 00 00 00 00 00 00 00 00 C0 99 58 01
00000120  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000130  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000140  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000150  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000160  C0 99 58 01 00 00 00 00 00 00 00 00 00 00 00 00
00000170  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000180  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000190  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000001A0  00 00 00 00 C0 99 58 01 00 00 00 00 00 00 00 00
000001B0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000001C0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000001D0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000001E0  00 00 00 00 00 00 00 00 C0 99 58 01 00 00 00 00
000001F0  8A 70 64 68 F7 24 82 47 AC A5 33 84 88 90 5E 5C

The boot block in the main ROM appears to contain a 0x100-byte signature at 0x1F08 - 0x2007.

[fzabkar]

Transferred All Three Flash Chips to New Board Still NO SPIN.
In this also Va=0.51v and Vb=11.97v

With these Patient ROMs Donor HDD Spining.
When HDD Spin Va= -19v and Vb=11.97v

This confirms that it is not a PUIS issue.

What voltages do you measure at the motor terminals on the patient PCB? Does any one winding measure differently than the other two? (One pin is the common terminal)

[gps31]

What voltages do you measure at the motor terminals on the patient PCB? 0v

Does any one winding measure differently than the other two? (One pin is the common terminal) No

So something in Motor IC?

When Patient PCB with its ROM connected with power and sata => No Spin, but shows Model Only, No Err LED
When Donor PCB with Patient ROM connected with power and sata => No Spin, Shows Model Only, Err LED

will upload Donor image latter?

[gps31]

Donor PCB [b]2060-810011-001 P1[/b] HDD: WD40PURZ-85AKKY0

[Lardman]

The closest I've got on hand is a WD20PURZ and that's 1.6ohm and 0.9ohm on the windings. It'll check the voltages on the motor connectors in a bit for you.

<edit>

They're only initially powered for 30ish seconds with the pcb disconnected and are measuring around 6v. Try checking yours within 30 seconds of applying power to the pcb.

[fzabkar]

It does look like there is a problem with the 12V side of the patient's motor controller IC. I'm wondering whether one of the half-bridges failed and then went on to burn up a motor winding, but I would think that would be unlikely.

[Lardman]

I'm wondering whether one of the half-bridges failed and then went on to burn up a motor winding

Wouldn't that be reflected in the resistance? I can't see why else it wouldn't power with the donor PCB if the HSA was separated though, wonder if the OP has cracked it open and checked if the spindle turns freely by hand?

[fzabkar]

I'm wondering whether one of the half-bridges failed and then went on to burn up a motor winding

Wouldn't that be reflected in the resistance?

Yes, it would. Sorry about that.

The old SMOOTH L7250 motor controller had a Boost voltage which was generated from the 12V supply. If I recall correctly, this voltage was around 18V when the drive was spinning. It was used by the spindle motor drive circuitry. I wonder if that is the source of the short that the OP is seeing across the diode.

[gps31]

810011-811 differ 810011-A01 with No. of Rom Chips and the Power feed lines

[fzabkar]

The differences in the protection circuitry do not affect compatibility.

It seems that the patient PCB has more options which are consistent with enterprise or NAS applications, eg rotational vibration sensing. Also, the boot block in the patient ROM has a 0x100-byte signature which the donor does not have.

[gps31]

[quote="gps31"]Donor PCB [b]2060-810011-001 P1[/b] HDD: WD40PURZ-85AKKY0

This PCB is Unlocked ( Comes with WD40PURZ-85AKKY0) WD marvel 4.2.1 detected as Appolo CR (Royl)