Brother International MFC 8640D Users Manual - English - Page 78

Sleep Time Setting the Sleep Time reduces power consumption by turning off the fuser inside the MFC, while it is idle. You can choose how long the MFC is idle (from 00 to 99 minutes) before it goes into sleep mode. The timer is automatically reset when the MFC receives a Fax or PC data, or makes a copy. The factory setting is 05 minutes. While the MFC is in sleep mode, you will see Sleep on the LCD. If you try to print or copy in sleep mode, there will be a short delay while the fuser warms up to working temperature. 1 Press Menu, 1, 6, 2. 2 Use the dial pad to enter the length of time the MFC is idle before it goes into sleep mode (00 to 99). 3 Press Set. 4 Press Stop/Exit. ■ If you want to turn sleep mode off, press Secure and Job Cancel simultaneously in Step 2. ■ If the MFC is in Sleep Mode when you change the Sleep Time, the new setting will take effect the next time the MFC copies or prints is restarted. Turning off the Scanner Lamp The scanner lamp stays on for 16 hours before automatically switching off to preserve the life of the lamp. You can turn off the scanner lamp manually if you wish by pressing the and keys simultaneously. The scanner lamp will remain turned off until the next time you use the scanning feature. Turning off the scanner lamp will also reduce the power consumption. Please note that turning the lamp off regularly will reduce the lamp's life. Some people prefer to turn the lamp off as they leave the office, or late at night at home. This is not necessary for normal day to day use. 4 - 10 GETTING STARTED