The content is discussing Hitachi and IBM desktop hard disk circuit boards with white labels including numbers such as 0A72947, 0A72944, 0A72937, 0A71336, and 0A71335. These circuit boards are likely used in desktop hard drives manufactured by Hitachi and IBM. The numbers mentioned are likely identifying numbers for different models or versions of the circuit boards. This information provides insight into the technical components used in these types of hard drives.
HDD PCB/Logic Board.Board Number: 110 0A90233 01, The Hard Disk Drive is not include.
Number of board space location
Please Note:
1.These boards are used, the circuit board components not falling, the interface did not break.
2. All PCB have been tested before shipping. If the PCB is faulty during shipping, please inform us immediately after your received it.
3. If you are not sure the PCB is compatible with your HDD or not. Please contact us
Replacement the PCB only can solve the problem that is caused by the PCB faulty and HDD failures are not always caused by the PCB faulty. This PCB is not guaranteed to fix your HDD.
Main Controller IC: 0A71256 of 0A71261
(Main control IC needs to be consistent with the bad boards)
HDD Motor Combo IC:0A56511(Both IC is compatible with each other)
Board Number:110 0A90233 01(Please make sure your original PCB board number is same as our PCB)
Remarks: If your HDD firmware, date code and site code is different. You can swap the BIOS chip from original PCB to the replacement PCB, to make the replacement PCB compatible with your HDD.
the BIOS chip position
Attention: Replacement the PCB only can solve the problem that is caused by the PCB faulty. If your HDD having the following problem.
Symptoms of failure:
The drive will power up normally (no ticking noises, errors etc) but will not be recognized by the computer
The drive will power up normally and be recognized correctly but will report a size of 0 bytes
The drive will power up but report SMART errors on boot Replacement the PCB may not solve the above problem. These problem is caused by the HDD firmware corrupted.
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