Control - Konica Minolta magicolor 4690MF Service Manual

26. Miscellaneous
26.1.3

Control

A. DC power supply fan motor control
<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.
• For the period of time during when the fusing pressure roller deformation prevention con-
trol is performed under the power save mode.
• For the period of time when the thermistor provided in the print head detects the temper-
ature of predetermined degrees or more.
• During when the image stabilization control is performed
<Half speed rotation conditions>
• The motor runs at a half speed during any time other than above.
<Forced stop condition>
• A malfunction occurs, but not when an error occurs.
B. Fusing fan motor control
<Full speed rotation conditions>
• 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.
• For the period of time when the thermistor provided in the print head detects the temper-
ature of predetermined degrees or more.
• During when the image stabilization control is performed
<Half speed rotation conditions>
• The motor runs at a half speed during any time other than above.
<Stop conditions>
• Stopped in the power save mode. However, the motor is not stopped for a predetermined
period of time after a print cycle has been completed.
• The temperature of the Fusing roller is below the specified one.
<Forced stop condition>
• For the period of time that begins when the warm-up cycle is started and ends when the
warm-up cycle is complete.
• A malfunction occurs, but not when an error occurs.
104
Theory of operation Ver. 1.0 May 2008