Toshiba MK6006GAH 1.8" - PCB swap possible?

[Rainbow]

My Toshiba MK6006GAH ZK01 1.8" 60GB drive failed - short inside the Marvell 88i6612-GAB1 CPU
Is PCB swap possible on these drives? Tried with PCB from the same model but ZL01 - the drive spins up but does not calibrate.

This shows that IC23 should be moved to the new PCB:
https://www.harddiskpcb.com/toshiba-mk6 ... -3393.html

But IC23 does not look like flash or EEPROM. It has Ricoh logo and "A01H" marking. Looks like a DC/DC controller, connected to the nearby coil and diode. Three of the 8 pins are 3.3V, two are GND, one is connected to diode.

Should I try to find a board from ZK01 drive? Or give up?

Attachments

[fzabkar]

I think IC23 may be a R1230D001H converter, but I'm not confident.

https://pdf.datasheetcatalog.com/datasheets/1150/357691_DS.pdf

https://www.datasheetarchive.com/pdf/download/distributors/Datasheets-29/DSA-562755.pdf?h=87f5b384a7c9d87e5d9848041f04add9%3Ac723dea4f5fb08f43f3b17ea400b821845676cdaa4a2373b15078ae2971ae2fd3286c1a74921e4f75ab9%3A341ed76237640c10f092c00834743749

This is a photo of the "D" version:

https://ae-pic-a1.aliexpress-media.com/kf/S83bdb509e6f14264a21c0f91d75620b5C.jpg

Can you show us a detailed photo of the three ICs near the motor controller? One is connected to the MCU.

[Rainbow]

In fact, there are only 2 ICs and neither seems to be a flash or EEPROM:
1. 5-pin one with marking "T2B". There is GND on two pins and 3.3V on one. One pin seems to be unused.
2. Bigger 6-pin with marking "2SD". There is no GND on any of the pins.

The 3rd one is not an IC. It's a white ceramic, marked "F" on one PCB and "T1" on the other one.

[fzabkar]

I guess the flash must be embedded in the MCU.

[fzabkar]

Can you dump the CPs and ROM from your donor?

[Rainbow]

The only machine where I can connect this drive is currently a Toshiba laptop.
I have to order an adapter from 50-pin interface to something sane and connect RX/TX pins there.

[Rainbow]

Now I have 1.8" to ATA44 adapter with added RX/TX pins. I get ">" prompt after pressing ENTER and also commands like "HP" or "DB" work.

But neither ToshibaReadROM.rar nor ToshibaReadROM2.rar works. They don't output anything. Will try to dump ROM manually.

[fzabkar]

Now I have 1.8" to ATA44 adapter with added RX/TX pins. I get ">" prompt after pressing ENTER and also commands like "HP" or "DB" work.

That doesn't sound like the MCU is "shorted". :-?