Konica Minolta bizhub C25 bizhub C25 Printer / Copier / Scanner User Guide - Page 310

Antistatic Protection Note It's very important to protect the printer controller board from electrostatic damage while performing any task involving the controller board. Turn off all power switches first. If an antistatic wrist strap is provided in this machine option kit, attach one end of it to your wrist and the other end to the bare metal chassis on the back of this machine. Never attach the wrist strap to any piece of equipment with an electrical current present. Plastic, rubber, wood, painted metal surfaces, and telephones are not acceptable grounding points. If you don't have an antistatic wrist strap, discharge your body's static electric charge by touching a grounded surface before you handle any circuit boards or components. Also avoid walking around after grounding yourself. Antistatic Protection 11-3