Need help?Do you have a question about the Lenovo 90HU and is the answer not in the manual?
General safety rules to ensure safe maintenance practices and user protection.
Precautions and procedures to avoid electrical hazards during servicing.
Guidelines for protecting sensitive components from electrostatic discharge damage.
Procedures and requirements for proper electrical grounding of the computer.
Critical warnings and cautions regarding hazardous conditions and materials.
Essential steps to take before disassembling the computer for repairs.
Instructions for removing and installing the computer's power supply unit.
Procedures for replacing both M.2 and 3.5-inch storage drives.
Detailed procedure for safely removing and installing the computer's CPU.
Comprehensive steps for removing and installing the main system board.
To Next Page
General