IBM A40 TYPE 6840 - Manual (Page 106)

CAUTION:
Electrical current from power, telephone, and communication cables can be
hazardous. To avoid personal injury or equipment damage, disconnect the attached
power cords, telecommunications systems, networks, and modems before you open
the server covers, unless instructed otherwise in the installation and configuration
procedures.
100 Hardware Maintenance Manual A40 Type 6840 A40P Type 6841 A40i Type 2271: IBM NetVista Computer