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WD professional course video from profix academy

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Western Digital Repair

Course Material
==========
profix academy

Class- 1​


HDD- PCB

[*]Type of WD PCB.
[*]L-shaped, Royl PCB.
[*]HDD Board Circuit.
[*]Diagnose PCB, Test point.
[*]Check MCU Chips.
[*]ROM IC (internal & External).
[*]SOC PCB.
[*]Overview IC Motors.
[*]Equivalent of PCB.
[*]USB HDD overview.
[*]General theory for Convert USB PCB to SATA PCB.



Class – 2​

HDD – Structure


[*]HDD From inside.
[*]Heads Structure, addressing.
[*]LBA, CHS Addressing.
[*]Zones, Tracks, Sectors.
[*]SA Structure.
[*]SA Tracks, modules.
[*]Servo, Servo Sector.
[*]Wedge, Wedge Line.


Class – 3​

ROM (Structure & Analysis)


[*]ROM.
[*]Rom modules.
[*]Head MAP (Module 0A in details).
[*]Edit 0A for clicking HDD.
[*]Rom Modules Map analysis.
[*]Module 0B, 20B Structure.
[*]SA Copy Region.
[*]Module 0D analysis.
[*]Adaptive mod 0x47 structure.
[*]Head DCM, Media DCM.
[*]MRJog, Preamplifier in details.
[*]SA translator mod 0x30 analysis.
[*]Mod 4F analysis and usage.
[*]Regenerate Rom in old Hdd Royl 0B, Royl 20B.
[*]Convert 192 to 256 Rom.
[*]Repair Dead PCB after write Rom.

Class – 4​

SA Structure and Analysis


[*]Read & Write SA Tracks.
[*]Read & Write SA Modules.
[*]Module Analysis.
[*]Dir Module 0x01 Analysis.
[*]Configuration Module 0x02 Analysis.
[*]Zone Map 0x03, 0x04 analysis.
[*]F-list 0x0c analysis.
[*]Overlays module analysis.
[*]ATA Modules.
[*]Load Overly to RAM in all Family.
[*]Choose correct overly.
[*]Defect module analysis.
[*]P-list 0x33.
[*]P-list Translator 0x31.
[*]G-list 0x34.
[*]G-list translator 0x32.
[*]SA Defect list 0x35.
[*]SA Translator (in Rom) 0x30.
[*]Track Defect List (T-list) mod 0x36.
[*]Adaptives module analysis.
[*]Modules 40, 41.
[*]Module 49,4a.
[*]SF Logs modules EXX in details.
[*]Arco Log modules 20XX in details.
[*]Functional modules in details.
[*]Finalizing SA Analysis.
[*]

Class – 5​

RAM operation


[*]RAM Operation.
[*]Load File to RAM.
[*]Edit DIR in RAM.
[*]Write New FW Using RAM.
[*]Edit Configuration module in RAM.
[*]Clear password on RAM.
[*]Edit Head Map on RAM.
[*]SF on RAM.


Class – 6​

Defects operation & Translator


[*]Edit p-list.
[*]Edit G-list.
[*]Rebuild translator.
[*]Rebuild p-list.
[*]Format with p-list.
[*]Quick Format with p-list.
[*]Format SA.
[*]Quick Format SA.
[*]Slow Responding auto and manual fix.
[*]

Class – 7​

Self – Test


[*]What is self-test?
[*]SF Script and general structure for 0x28.
[*]Prepare hdd for SF.
[*]Test SA for errors.
[*]Run Full SF.
[*]Edit SF Script.
[*]Build Customized Script.
[*]Build Repair bad sector Script.
[*]Regenerate p-list by SF.
[*]Regenerate T-list by SF.
[*]Servo Calibration.
[*]Wedge Calibration.
[*]Regenerate Factory Script.
[*]Correct SF Parameter.
[*]Unlock SA in new HDD.
[*]Online and offline SF.
[*]Diagnose and Repair SF Error Failure.
[*]Clear Debug Stop on RAM.
[*]Clear SF Error Counter.
[*]Run SF on RAM.
[*]Universal Scripts.
[*]Notices for high success rate.
[*]SF in SA.
[*]Repair bad Sector in SA by DF.
[*]Recover Errors that prevent Rebuild p-list after SF Finish.
[*]

Class – 8​

ARCO – in details


[*]What is ARCO?
[*]HDD Calibration.
[*]MINI Arco – Arco 44.
[*]Generate Adaptives by ARCO.
[*]Full Arco.
[*]Full Arco and bad sector Repair.
[*]Arco 6F.
[*]Arco 6A.
[*]Arco 6B.
[*]Arco 69.
[*]Regenerate TPI, SPT and adjust Capacity by Arco.
[*]Arco 4A.
[*]Arco 70.
[*]Drive validation TEST (DVT).
[*]Arco parameters in details.
[*]Extract original Arco parameters.
[*]Arco in new PCB in details.

Class – 9​

Repair HDD Problem


[*]Start Examine HDD.
[*]Analysis of problem to choose perfect solution.
[*]Repair HDD Bad Sector.
[*]Repair SA Bad Sector.
[*]Fix ECU Unsafe error.
[*]Fix Disk Dam Error.
[*]Fix RSC no Conti buffer.
[*]Fix Busy HDD.
[*]Fix Slow HDD.
[*]Fix all 0GB (0 LBA) Hdd.
[*]Fix undetected HDD.
[*]Fix Clicking HDD.
[*]Fix noisy HDD.
[*]Head Test on SA.
[*]Determine bad and weak heads.
[*]Fix Regular bad sector.
[*]Fix Green bad sector and bad adaptive.
[*]Other problems in WD drives and solution.


Class – 10​

Heads, Zone, Tracks, modules


[*]Test heads in SA zones, UA.
[*]De-pop Faulty head in all Family.
[*]Depop head 0 and edit adaptive.
[*]Edit TPI, CAP after cut head.
[*]Weak head and bad sector.
[*]Bad zone.
[*]Cut bad zone.
[*]Format special zone.
[*]Write CHS.
[*]Erase Tracks.
[*]ABA VS ID.
[*]Determine SA bad sectors.
[*]Module offset shifting.
[*]ADD new module.

Class – 11
​
HDD Refurbishing


[*]Introduction to hdd refurbishing.
[*]SA Format.
[*]Sequence to write new SA.
[*]Refurbishing using any original FW.
[*]Repair Rom for Refurbishing.
[*]Create universal scripts.
[*]Extract original parameter.
[*]Steps to start Refurbishing in details.
[*]Refurbishing using factory FW.
[*]Refurbishing by auto-Trex.
[*]Secrets for high Rate.

Class – 12​

Other threads you should know in WD & conclusion

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