IBM 24P4555 User Guide - Page 11

US-4 Step 3: Connect the power cord With the monitor and computer turned off, first connect the proper power cord for your local supply to the monitor, then connect it to a properly grounded power outlet. Step 4: Turn on the monitor and computer • Turn the monitor power switch ON. Then turn the computer power switch ON, by pressing the switch inward. The green power indicator will light up. • Allow about 30 seconds for the CRT tube to warm up. Data will be displayed on the screen. • If your display fails to function properly, please first refer to the section "Troubleshooting" in this manual. Workplace Preparation Positioning the Monitor Choose a suitable place to position the monitor where it is not near fluorescent desk lighting or any equipment that produces magnetic field that could cause interference. Ensure that the furniture or equipment can support the weight of the monitor. Allow at least 2 inches (50 mm) ventilation space around the monitor. Height The monitor should be positioned so that the top of the screen is slightly below your eye level when you sit at your workstation. Orientation Choose a position that gives the least reflection from lights and windows, usually at a right angle to any windows. The monitor should be positioned directly in front of you so that you do not have to twist your body. Tilt the monitor to a comfortable viewing angle. Working Practices Rest Take regular breaks. Vary your posture, and stand up and stretch occasionally as prolonged use of computer workstations can be tiring. Back You should sit back in the chair and use the backrest. Hands Use a light touch on the keyboard, keeping your hands and fingers relaxed. Allow a space in front of the keyboard to rest your wrists when not typing. Consider using a wristpad. Eyesight Working with monitor, in common with any kind of prolonged close work, can be visually demanding. Look away from the screen periodically and have your eyesight checked regularly. Screen settings Set the screen brightness and contrast to a comfortable level. You may have to adjust this as the lighting changes during the day. Many application programs let you select color combinations which can help you to view in comfort.