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Lenovo ThinkPad T400s Service Manual
This Service Manual for the Lenovo ThinkPad T400s covers hardware maintenance tasks such as using the Lenovo ThinkVantage Toolbox diagnostic program, accessing PC‑Doctor for Rescue and Recovery, and managing system logs. It includes step‑by‑step instructions for running diagnostics on Windows 7, Vista, and XP, as well as guidance on installing the latest toolbox software.
The manual also details procedures for handling power‑on and hard‑disk passwords, including how to remove a forgotten user HDP when the master HDP is known. It explains BIOS access, password entry, and the steps required to clear both user and master hard‑disk passwords, with notes on service limitations.
All Lenovo ThinkPad T400S documents by type
Disassembly, diagnostics and part numbers, for repair.
Questions answered in these manuals
How do I run the Lenovo ThinkVantage Toolbox in Windows 7?
While Windows is running, press the ThinkVantage button to launch the toolbox.
How can I remove a forgotten hard‑disk password on a ThinkPad T400s?
If you know the master HDP, start the computer, press F1 to enter BIOS, select the hard‑disk password option, enter the master HDP, and confirm to clear both user and master passwords.
What does this manual contain?
It contains service and reference information for the ThinkPad T400s, T410s, and T410si products.
From: Lenovo ThinkPad T400s T410s T410si Hardware Maintenance Manual
Who should use this manual?
The manual is intended only for trained service technicians familiar with ThinkPad products.
From: Lenovo ThinkPad T400s T410s T410si Hardware Maintenance Manual
How can I remove the power‑on password on a ThinkPad T400s?
The manual includes a "Power‑on password" section that describes the steps to remove the password.
What should I read before servicing a ThinkPad T400s?
You should read the safety information on page 1 and the important service information on page 39 before servicing the notebook.