IBM 8668 Hardware Maintenance Manual - Page 57
Statement 1, DANGER, devices, and disconnect all external cables and power cords.
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Left-side cover Cover release lever To remove the left-side cover of the tower model: 1. Review the information in "Before you begin" on page 47. 2. If you are planning to install or remove any part other than a hot-swap hard disk drive or hot-swap power supply, turn off the server and all attached devices, and disconnect all external cables and power cords. Statement 1: DANGER Electrical current from power, telephone, and communication cables is hazardous. To avoid a shock hazard: v Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. v Connect all power cords to a properly wired and grounded electrical outlet. v Connect to properly wired outlets any equipment that will be attached to this product. v When possible, use one hand only to connect or disconnect signal cables. v Never turn on any equipment when there is evidence of fire, water, or structural damage. v Disconnect the attached power cords, telecommunications systems, networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures. v Connect and disconnect cables as described in the following table when installing, moving, or opening covers on this product or attached devices. Installing options 49