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Hard Disk Data Recovery, Pcb Data Recovery, Pendrive Data Recovery, Memory Card Data Recovery, Smartphone Data Recovery

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Module D2 Hard disk PCB repair training

D2.1 SMD Basic electronics for hard disk components and PCB repair
  • Basic electronics fast revision
  • Working concept of electronics component resistor, capacitor, diode, transistor, fuse, tvs diode, MOSFET, etc.
  • Multimeter basic concept, testing different components
  • Measuring and Identify ok, Short, Open components
  • Introduction to component of hard disk PCB , resistor, capacitor, diode, transistor, MOSFET chips
  • Removing and Inserting Different components
  • Working concept of chips,
D2. 2 Common problems in hard disk due to pcb fault
  • Totally dead Hard Drive does not spin up
  • When hard disk connects to computer, computer does not start or hangs
  • Broken power connectors
  • Broken data connectors
  • Spindle/arm driver chip failure
  • You can see a burned component on the hard drive circuit board.
  • Connector of motor or head is damaged
  • Printed circuit board failures including pre-amplification
  • TVS diode blow up
  • Protection fuse, 0ohms resistor open
  • PCB Damaged due to liquid
  • Fire Damage
  • Ceramic capacitor short
  • Mosfet short, or not giving output
  • Data connector resistor open
  • Electric shock
  • Pcb circuit open / short
  • a. Introduction & Block diagram of hard disk printed circuit board
    • Identify different chips on hard disk
    • Mcu, driver chip, flah ram chip , buffer chip
    • Identify different component on hard disk
    • Resistor, capacitor, tvs diode, transistor, fuse , inductor, rectifier
    • identify circuit types, no models
    • Block diagram of hard disk pcb
    • How pcb work
    • Identify hard disk pcb
  • b. Hard disk Power section normal molex, sata
  • c. Hard disk Dc to dc converter power section
  • d. Hard disk Data section connection sata pata
  • e. Hard disk Firmware section
  • f. Hard disk Ram/ Buffer section
  • g. Hard disk Vcm controller section
  • h. Hard disk Spindle motor controller
  • i. Hard disk Mcu section
  • j. Hard disk Pre amplifier section
  • k. Hard disk Head contact section
  • l. Hard disk Spindle motor section
D2.4 Power section & DC to DC converter, (Mosfet & other smd component working and power detail in hard disk )
  • Types of hard disk power connector
  • Power input (sata pata)
  • Pata old Molex 4 pin (5v & 12v)
  • Sata connection 15 pin (5v, 3.3v, 12v)
  • Checking hard disk open short thru power connector
  • Understanding Protection circuit
  • Semi conductor mosfter transistor Manufacture name
  • Semi conductor mosfet transistor components
  • Tvs diod, 0ohms resistor, fuse,
  • Dc to dc converter
  • Transistor used as switching
  • Step down from 5v to 2.5
  • Mosfet working function
  • Testing of mosfet in hard disk pcb
  • Linear output,
  • swithching output
  • work of inductor in hard disk
  • PWM controller IC
  • Power supply to different chips
D2.5 Mcu section, Data section, preamp section head (chip working concept power main signals)
  • Data section of hard disk
  • Sata connection 7 pin
  • Signal detail of sata connection
  • Pata connection of hard disk 40pin Signal detail of pata connection
  • Connection detail of sata and pata connector
  • Main control chip MCU manufacture
  • Hard disk mcu chips
  • Working detail of MCU chip
  • Connection detail of MCU
  • Voltage of hard disk MCU chip
  • Hard disk head connector
  • Pin out detail of hard disk head connector
  • Main signals detail of head contact
  • Working concept of hard disk preamp

  • Hard disk preamp chip manufacture with identify name
  • Hard disk preamp chips
  • Pin detail of hard disk preamp chip
  • Connection of head, vcm coil, micro actuator
  • Types of hard disk head
  • Ferrite heads
  • Amr heads
  • Thin film heads
  • Metal in gap (MIG) heads
  • Tunneling magneteresistue (TMR)
  • Perpendicular magnetic recording (PMR)
  • Giant magneto resistive (GMR)
D2.6 Buffer Ram, flash rom section (working concept types and main signals)
  • Hard disk RAM BUFFER Chip manufacturer
  • Hard disk RAM BUFFER chips
  • Working function of Buffer chip
  • Pin detail voltage supply of buffer chip
  • Datasheet study of buffer chip
  • Connection of buffer chip with other chip
  • Hard disk EEPROM FLASH Chip manufacturer
  • Hard disk EEPROM Flash chips
  • Working function of EEPROM
  • Pin detail of EEPROM
  • Connection of Flash EEPROM chip with other chip
D2. 7 VCM Motor controller & read channel chip working concept and main signals
  • Hard disk Read Channel Chip manufacturer
  • Hard disk Read channerl chips
  • Working function of read channel chip
  • Pin detail , voltage supply of read channel chip
  • Hard disk motor controller chip manufacturer
  • Hard disk motor controller chips
  • Working function of motor controller chips
  • Pin detail, voltage supply of motor controller chip
  • Spindle motor power supply from motor controller chip
  • Switching , linear mosfet power controller
  • Connection detail of motor controller chip with other chip
D2. 8 Live pcb tracing, different volt of pcb, fault finding of hard disk pcb
  • Online offline
  • Offline tracing of hard disk pcb with multimeter
  • Testing power connector main volt
  • Testing tvs diode
  • Testing all capacitor
  • Testing spindle motor continuity
  • Online Live tracing of PCB with multimeter
  • Testing Power of mcu
  • Testing Power on buffer chip
  • Testing Power on read write chip
  • Testing Power on spindle motor
D2. 9 Identify hard disk pcb no for donor pcb (Samsung, Seagate, wd, Hitachi, Ibm, Maxtor,)
  • Hard disk model no
  • Hard disk pcb no
  • Hard isk pcb printer no
  • Matching criteria of different hard disk
  • Seagate Hard Drive PCB Swap Replacement Guide
  • Western Digital PCB Swap Replacement Guide
  • Samsung PCB Swap Replacement Guide
  • IBM Hitachi PCB Swap Replacement Guide
  • Maxtor PCB Swap Replacement Guide
  • Hitachi PCB Swap Replacement Guide
  • Toshiba PCB Swap Replacement Guide
  • When firmware replacement is important
  • What is glist, plist on hard disk
  • Service area on hard disk platter
  • Which models required firmware chip replacement after swapping PCB
  • Which models required no firmware replacement after swapping PCB
D2.10 Replacing component and IC`s of hard disk (demo, video)
  • Removing and inserting of different component from hard disk PCB
  • Removing resistor, mosfet, transistor, diode, fuse demo
  • Removing and inserting of different chips from hard disk PCB
  • Firmware chip, replacement idea
  • Hard disk socket and connector
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