Counter Control - Canon imageRUNNER ADVANCE 4551i Service Manual

2. Aperture width of the edge cooling shutter is depending on the paper size. The edge cooling shutter starts to move when the
registration clutch turns ON.
Opening width of the shutter
25 ppm ma- 35 ppm ma-
chine
51 ppm ma- 45 ppm ma-
chine
0 mm
18 mm 22 mm
23 mm 26 mm
24 mm 27 mm
29 mm 32 mm
30 mm
50 mm
53 mm
58 mm(opend)
*1: The width of the edge cooling shutter aperture can be adjusted by service mode (Open width adj of paper edge cooling
fan shutter; in N1/N3 mode, A3/A4).
SERVICE MODE > COPIER > ADJUST > FIXING > ADJ-FNSH
Adjusting value; "0"-"6": Aperture width changes in 0mm – 24mm by 4mm steps.
Adjusting value; "7"-"14": Aperture width changes in 30mm – 58mm by 4mm steps.
3. When Fixing film edge cooling fans (rear/front) (FM1/FM2) and the main body cooling fan (FM6) are ON, their power (full
speed, half speed and stop) and width of the edge cooling shutter aperture are controlled by the subthermistor (TH1/TH2).
Shutter HP
sensor (S10)

Counter control

Count-up timing differs according to the following.
• Print mode (1-sided page, 2nd side of 2-sided page, 1st side of 2-sided page)
• Delivery position (Finisher).
chine
chine
A3, A4(in respective mode other than N1/N3)
LDR, LTR, A-LTR
K8, K16
EXEC, G-LTR, K-LGL
B4, B5
A3, A4
(in N1/N3 mode and the surface temperature of the pressure roller is 95 degrees C or more.)
*1
LTR-R, LGL, A-LTR-R, OFFICIO, A-OFFICIO, B-OFFICIO, EOFFICIO, M-OFFICIO,
FOOLSCAP, F4AR, I-LGL
A4-R, FOLIO
Other than the above-mentioned sizes
Shutter (rear)
FM1
Paper size
Film unit
Shutter motor (M8)
FM2
138
2. Technology
Shutter (front)