Brother MFC 7550MC - Manual (Page 32)

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HOW TO USE ON-SCREEN PROGRAMMING (OSP) AND HELP KEY
MFC 4550/6550MC/7550MC
OP-US-5.0
S L E E P T I M E : 0 5 M I N
-Sleep Mode is activated when the heater stops. However, the cooling fan
will continue to run until the machine has cooled down. The actual time
before the fan stops will vary depending upon operating conditions.
-It will take approximately 12 to 30 seconds for the machine to warm up
from the sleep mode before you can start printing or copying. The LCD will
show WARMING UP during this time. When it is ready it will automatically
start the last job you have entered.
NOTE: The cooling fan will continue to run until the temperature of the
machine reaches a certain level. Even after the heater stops, the
machine will have to warm up before copying and printing.
NOTICE
8 . S L E E P M O D E
6. Enter sleep time (00 to 99) by using
number keys.
Example: 05.
7. Press Set .
8. Press Stop to exit.