Miscellaneous; Fan Control; Composition; Function - Konica Minolta magicolor 4690MF Service Manual

Theory of operation Ver. 1.0 May 2008

26. Miscellaneous

26.1 Fan control

26.1.1

Composition

Defogger fan motor (FM5)
DC power supply
fan motor (FM1)
26.1.2

Function

A. DC power supply fan motor
• Discharges heat generated from the interior parts (including the DC power supply, inter-
mediate transfer belt section, toner cartridges/C, M, Y, and motor drives) from the main
body to prevent the interior temperature from rising inordinately.
B. Fusing fan motor
• Fusing fan motor discharges heat generated from the interior parts (including the DC
power supply, fusing unit, toner cartridges/K, and motor drives) out of the main body to
prevent the interior temperature from rising inordinately.
• Air passageway is formed on top of the DC power supply, in the duct inside the toner car-
tridge rail, and below the print head housing. No air flows through areas around the toner
cartridges. This effectively prevents toner from scattering.
C. Ozone fan motor
• Discharges heat generated from the print head from the main body to prevent the print
head temperature from becoming inordinately high.
• Removes ozone produced from the toner cartridges and charging section.
• Air passageway is formed on top of the DC power supply, in the duct inside the toner car-
tridge rail, and below the print head housing. No air flows through areas around the toner
cartridges. This effectively prevents toner from scattering.
D. Duplex cooling fan motor
• To avoid temperature increase at the fusing section, heat stagnating in the fusing section
will be discharged out of the machine.
E. Defogger fan motor
• Heat accumulated inside the scanner section will be discharged in order to avoid temper-
ature increase at the scanner section.
• To prevent condensation from forming in the horizontal conveyance section.
26. Miscellaneous
Fusing fan motor (FM2)
Duplex cooling fan motor
(FM4)
Ozone ventilation
fan motor (FM3)
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