The shutter is driven by the shutter motor (stepping motor), and the shutter HP sensor (PS53) is used to check to see if the shutter is set at the appropriate position.

ERROR CODE:

E840 (shutter error)

0001 Indicates that the HP sensor signal is not detected when the shutter is operating, after executing 3 retry operations.

0002 The interval of ON-OFF detection by the sensor in response to shutter operation is shorter than a specific time period.

9.3.1.6 Controlling the Shutter Position

iR5065 / iR 5055 / iR5075 / / /

The shutter is set to the appropriate position by driving the shutter motor (stepping motor) for a specific number of steps. A cut-off is found in the periphery of the

shutter gear (front) operating in conjunction with the shutter; the machine checks to see if the shutter is set to the appropriate position with reference to the output

of the shutter HP sensor (PS53), i.e., whether the sensor has detected the cut-off.

[1] Shutter drive gear (front)

[2] Cut-off (for HP detection)

[3] Cut-off (for medium-size paper detection)

[4] Cut-off (for small-size paper detection)

PS53: shutter HP sensor

The following shows the position of the shutter (3 steps). The machine moves the shutter to the appropriate position to suit the size of the paper and the reading of

the thermistor in question.

([1] in the diagram indicates the shutter.)

- Home Position (HP)

- Medium-Size Paper Position

9-12

[2]

PS53

F-9-19

[1]

F-9-20

[1]

[3]