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Backlight The display and keypad are illuminated by a backlight. When you press any
key, the backlight illuminates. To specify the length of time for which the backlight is active, set the Backlight menu option (5-5); see page 72 for further details.
Service Light To activate or deactivate use of the service light, set the Service Light menu option (5-6); see page 72 for further details.
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