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To find a donor PCB or donor hitachi drive is one of the important factors to restore one patient hitachi drive with PCB malfunction or firmware or head damage which requires a swap.

Hitachi DK23DA has the models of DK23DA-10F with capacity of 10GB, DK23DA-20F with capacity of 20GB, DK23DA-30F with capacity of 30GB and DK23DA-40F with capacity of 40GB.

It has features of 10, 20, 30 or 40 GB in 9.5mm high package for maximum capacity slimline portable applications;
ATA-5 interface with 2048kB  read/write cache;  Ultra DMA mode 5 (100 MB/s max.) supported;  GMR head and MEEPRML read channel technology; 32-bit RISC microprocessor,  Shock sensor, SMART;  Use of Fluid Dynamic Bearing Motor to improve Acoustic  and shock characteristics. Usually you can buy this kind of Hitachi donor drives within $50. If you have one patient drive fixed with one donor drive, you may charge $500.

You can buy one Hitachi DK23DA  donor drive here for head replacement, firmware update or PCB swap.

The following is the PCB information on this drive family:

1, Read/Write Channel; Interface Circuit; Servo Control Circuit;

2, Buffer RAM;

3, VCM Power AMP; Spindle Motor Power AMP;

4, Microprocessor (MPU): MPU RAM and MPU ROM; External Flash ROM

Hitachi hard drive repair tool recommended: HD Doctor for Hitachi

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