from web site
The following replaceable components are available for the 3379, 4083, 4088, 4099, 4138, 5897, 6137, 6234, 6258, 6303, 7174, 7220, 7346, 7354, 7357, 7360, 7483, 7582, 7627, 7630, 7638, 8910, and 9964.. Use good judgment as to the safety of any alterations. If necessary, alternate moving each side of the adapter card a small amount until it is removed from the adapter card slot.
Check the power-on switch for continuity. Return to the Setup Utility program menu and select Exit and then Save Settings or Save and exit the Setup Utility. Pour mettre l'unité hors tension, vous devez déconnectertous les cordons de la source d'alimentation.
Lenovo ThinkCentre 7244 Hardware Maintenance Manual - The battery normally requires no charging or maintenance throughout its life; however, no battery lasts forever. A remoção das tampas de um produto a laser pode resultar em exposição prejudicial à radiação de laser.