Canon imageRUNNER 2545, Service Manual

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Technology > Controller System > Controls > Fan
Technology > Controller System > Controls > Fan
■
Software counter
The timing at which the count is incremented differs depending on the following:
- Printing mode (single-sided/double sided (2nd side) or double sided (1st side))
- Target of delivery (inner finisher)
Target of delivery
Print mode
Single-sided/Double-
sided (2nd side)
Double-sided (1st side)
Count-up timing
Host machine
1st delivery tray No.1 delivery sensor (S12)
Duplex feed sensor (S7)
2nd delivery tray No. 2 delivery sensor (S42)
Inner finisher Inner finisher inlet sensor (S1)
■ Fan
●
Overview
Fan layout
FAN1
FAN6
FAN2
FAN3
FAN4
T-2-12
F-2-42
No. Name Function Error code
FAN1 Paper edge cooling fan (rear) Blows air to both ends of the fixing film to
cool the sections where paper is not fed
when paper narrower than the A4 width
(297 mm) is fed.
E806-0001
E805-0002
FAN2 Paper edge cooling fan (front)
E806-0003
E805-0004
FAN3 Exhaust fan (rear)
Cools the fixing unit.
E805-0000
E805-0001
FAN4 Exhaust fan (front) Cools the fixing unit.
E805-0002
E805-0003
FAN6 Power supply cooling fan Cools the power supply.
E804-0000
E804-0001
：
Full-speed : 1/2-speed
PTINT LSTR
STBY STBY
Paper edge cooling fan
(rear) (FAN1)
Exhaust fan (rear)
(FAN3)
WUP
Exhaust fan (front)
(FAN4)
Power supply cooling fan
(FAN6)N6)
INI
*3
*1
*1 *2
60sec
Paper edge cooling fan
(front) (FAN2)
*1:The fan intermittently operates every second.
*2: When the width of the last paper is narrower than the A4 size (297 mm), the fans operate
when the difference in temperature between sub thermistors TH1 and TH2 becomes 20
degree or less. When the width of the last paper is wider than the A4 size (297 mm), the
fans operate for 10 seconds after completion of printing.
*3: The fan operates at 1/2 speed only when the machine enters the standby mode after
running for more than 8 minutes for fixing.
● Paper edge cooling fan (rear)/(front) control
Purpose
These fans are used to prevent the sections where paper is not fed from heating excessively
when narrow paper (narrower than the A4 size (297 mm)) is fed.
They cool the paper passed through the fixing unit, preventing it from sticking to the
surrounding parts during delivery.
T-2-13
F-2-43