Konica Minolta magicolor 4690MF Service Manual page 140

Theory of operation Ver. 1.0 May 2008
C. Ozone ventilation fan motor
<Full speed rotation conditions>
• At the start of a warm-up cycle
• During a print cycle
• During when the image stabilization control is performed
• For the period of time when the thermistor/3 provided in the print head detects the tem-
perature of predetermined degrees or more
<Stop conditions>
• A predetermined period of time elapses after a warm-up cycle is completed
• At the end of a print cycle
• During the power save mode. The motor is not, however, stopped for a predetermined
period of time after a predrive is complete.
<Forced stop condition>
• A malfunction occurs, but not when an error occurs.
D. Duplex cooling fan motor control
<Full speed rotation conditions>
• For the period of time when the thermistor provided in the print head detects the temper-
ature of predetermined degrees or more
• For the period of time that begins when a print cycle starts and ends when a predeter-
mined period of time elapses after the print cycle has been completed.
• During when the image stabilization control is performed
<Stop conditions>
• During the power save mode.
• During the light door open.
• During the warm-up cycle.
• A print cycle is being carried out using transparency
<Half speed rotation conditions>
• A malfunction occurs, but not when an error occurs.
E. Defogger fan motor
<Full speed rotation conditions>
• For the period of time that begins when the warm-up cycle is started and ends when a
predetermined period of time elapses after the warm-up cycle has been completed.
• For the period of time that begins when a print cycle starts and ends when a predeter-
mined period of time elapses after the print cycle has been completed.
<Stop conditions>
• During the power save mode.
• A predetermined period of time elapses after a warm-up cycle is completed
• A predetermined period of time elapses after a print cycle has been completed
<Half speed rotation conditions>
• A predetermined period of time after a warm-up cycle is completed
• A predetermined period of time after a print cycle has been completed
26. Miscellaneous
105