WD400LB Western Digital 3.5″ hard drive with a storage capacity of 40GB and featuring a IDE interface. WD400LB Western Digital Caviar 40GB 7200RPM EIDE 40-Pin 3.5-inch Low Profile (1.0 inch) Hard Drive.
All information about the Western Digital WD400LB hard disk drive: technical parameters, failure symptoms, free asked questions, reviews, HDD repair and data recovery.
Western Digital WD400LB Technical Details:
- Manufacturer: Western Digital
- Manufacturer Website: www.wdc.com
- Manufacturer Part No: WD400LB-55DNA0
- Product Series or Family: Caviar
- Product Type: Internal Hard Drive
- Storage Capacity: 40GB
- Spindle Speed: 7200RPM
- Drive Interface: IDE
- Form Factor: 3.5Inch
- Cache: 2MB
Western Digital WD400LB Hard Drives:
- WD400LB-00DNA0, DCM HSCACVJAA, Western Digital 40GB IDE 3.5″ Hard Drive
- WD400LB-55DNA0, DCM DSBACTJCH, Western Digital 40GB IDE 3.5″ Hard Drive
- WD400LB-60DNA1, DCM HSCHCTJCH, Western Digital 40GB IDE 3.5″ Hard Drive
Western Digital WD400LB Failure Symptoms:
- Electrical Failure Symptoms:
Drive is powered, but shows no sign of function;
Disk knocking as the motor fails to spin;
Clicking sound as the heads search or initialize; - Mechanical Failure Symptoms:
Clicking, grinding sounds;
Completely quiet due to ” motor freeze”;
“music” tone as the disk is powered up; - Logical Failure Examples:
Accidental deletion, accidental format, file corruption, software bugs, file system corruption, viruses and malware, and many, many more. - Firmware Failure Symptoms:
drive powers up, but is not recognised by the computer;
Drive powers up, but is recognised wrongly, sometimes with nonsensical characters;
Drive freezes during booting up; - Bad Platter Area Symptoms:
Hard disk still accessible but appear to “hang” or “sluggish”;
Constant Cyclic Redundancy (CRC) errors;
Unable to access folders or files which could be seen; - Complex Failure Model
Western Digital WD400LB Data Recovery & HDD Repair:
When it comes to data recovery one of the most common problems Western Digital WD400LB Hard Disk Drive experience is burnt circuit board(PCB). So if you will need to match a replacement PCB, it is important that you note the “Board Number” of your current circuit board in addition to the hard drive’s “Model Number“.
Multiple PCB Number revisions:
2060-001159-006, etc.
Multiple Model Number revisions:
WD400LB-00DNA0, WD400LB-55DNA0, WD400LB-60DNA1, etc.