- Observe good housekeeping [...]
- Do not perform any action that causes hazards [...]
- Before you start the machine, make sure that other service technicians and the customer's personnel are not in a hazardous position.
- Keep your toolcase away from walk areas so that other people will not trip over it.
- Do not wear loose clothing [...]. If your hair is long, fasten it.
- Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing.
ThinkPad Hardware Maintenance Manual