Konica Minolta bizhub C658 Service Manual page 1921

bizhub C658/C558/C458/C368/C308/C258
Motor name
Paper cooling fan (FM8) Not equipped with
(bizhub C458) CU-102
Equipped with
CU-102
Toner suction fan bizhub C368/C308/
(FM11) C258
bizhub C458
Fusing power supply cooling fan (FM12)
UFP exhaust fan1 (FM17)
UFP exhaust fan1 (FM18)
(bizhub C658/C558)
UFP exhaust fan1 Not equipped with
(FM17) CU-102
(bizhub C458)
Equipped with
CU-102
• *1: Some operations selected in the service mode (Paper path check etc.)
• *2: If the machine enters the "standby" state, the fan motor turns at full speed for predetermined time before stopping.
• *3: Half speed rotation after the lapse of the predetermined period of time of full speed rotation
• *4: Full speed rotation when optional
20.3 Operation
20.3.1 Power supply cooling fan
• Draws outside air into the inside of the machine to prevent the temperature around the DC power supply, PH section, developing/drum unit.
• Air is drawn from around the edges of the first paper cassette and sent to each unit via ducts.
O THEORY OF OPERATION bizhub C658/C558/C458/C368/C308/C258 > 20. FAN
Control
• Printing
• At initial operation, image stabilization, transfer cleaning, function *1
Stop • Other than those below
Half • Printing
speed
Stop • Other than those below
Full speed • During warm-up
• Printing
• At initial operation, image stabilization, transfer cleaning, function *1
Stop • Other than those below
Full speed • Printing
• At initial operation, image stabilization, transfer cleaning, function *1
• Operates at full speed for a predetermined period when the internal
temperature rises above a predetermined threshold during standby.
Stop • Other than those below
30% air • Standby
flow • During warm-up
relative to • Printing
that of full • In low-power or sleep
speed • At paper-jam, in trouble
Full speed • At initial operation, image stabilization, transfer cleaning, function *1
• Print utilization exceeds a predetermined threshold
• Internal temperature reaches a predetermined threshold
Stop • Other than those below
Full speed • During warm-up
• Printing
• At initial operation, image stabilization, transfer cleaning, function *1
Stop • Other than those below
Full speed • During warm-up
• Printing
• At initial operation, image stabilization, transfer cleaning, function *1
Stop • Other than those below
Full speed • Print utilization exceeds a predetermined threshold
• Internal temperature reaches a predetermined threshold
Stop • Other than those below
Full speed • During warm-up
• Printing
• At initial operation, image stabilization, transfer cleaning, function *1
CU-101 is mounted, even during warm-up.
O-146
Control conditions (outline)
CONTROL