Theory of Operation Ver1.0 Sep.2006
E. IPB fan /1 (M24), /2 (M25) control
(1) Purpose
•
To cool around the image processing board (IPB).
(2) ON timing
•
Rotates at low speed during standby.
•
Starts to operate upon starting of printing.
•
Starts to operate upon starting of scanning.
•
Starts to operate upon starting of HDD operation.
(3) OFF timing
•
Starts to operate upon completion of printing.
•
Starts to operate upon completion of scanning.
•
Starts to operate upon completion of HDD operation.
F.
Tucking fan/1 (M26), /2 (M27), /3 (M28) control
(1) Purpose
•
To cool around the reverse paper exit section and the paper.
(2) ON timing
•
Stops during printing front side of double side print.
•
Starts to operate upon starting of printing back side of double print or single print.
(3) OFF timing
•
Stops when the single print counter reaches a predetermined level.
G. Deodorization fan (M36) control
(1) Purpose
•
To cool around the fusing section.
(2) Low/high speed switching timing
•
Rotates at low speed during standby.
•
Switches to high speed upon starting of printing.
•
Switches to low speed a predetermine time period after printing is finished.
H. Fusing ventilation fan (M37) control
(1) Purpose
•
To cool around the fusing section.
(2) Low speed/fast switch timing
•
Rotates at low speed during standby.
•
Switches to high speed upon starting of printing.
•
Switches to low speed a predetermine time period after printing is finished.
25. OTHER CONTROLS
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