2Shutter Operation; Shutter Operation - Canon Finisher-R1 Service Manual

Chapter 2
Detected items
Tray 1 upper limit
Stack count 500 sheet limit exceeded
Stack count 1000 sheet limit exceeded
Tray 1 lower limit
Detected items
Tray 2 upper limit
Stack count 500 sheet limit exceeded
Stack count 1000 sheet limit exceeded
Tray 2 lower limit (finisher)
Tray 2 lower limit (saddle finisher)

2.5.2 Shutter Operation

When tray 1 passes the delivery section with paper already stacked, the stacked paper may get caught by the delivery
section. A shutter is provided at the delivery section to prevent this. The shutter closes when tray 1 passes the delivery
section. This is performed even when no paper is stacked.
When the shutter clutch (CL31) and stack ejection lower roller clutch (CL32) are ON, the shutter moves up (close)
when the stack ejection motor (M32) turns forward and moves down (open, delivery enabled) when the motor turns
backward.
The open/close of the shutter is detected by the shutter home position sensor (PI45).
2-20
T-2-5
Tray 1 shift area sensor PCB
Area sensor Area sensor
1(PS983) 2(PS982)
OFF OFF
ON ON
ON OFF
ON OFF
T-2-6
Tray 2 shift area sensor PCB
Area sensor Area sensor
1(PS983) 2(PS982)
OFF ON
ON ON
ON OFF
OFF OFF
OFF OFF
Area sensor
3(PS981)
OFF
OFF
OFF
ON
Area sensor
3(PS981)
OFF
OFF
OFF
OFF
ON
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