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ENWW Paper feed section 13
HCI unit explanation
b Output signal
1 D1, 2 (HCIDB to M100)
M100 (HCI UP/DOWN) drive signal
These signals switches the direction
of the drive current to control the
rotation direction of M100.
Remaining paper detection/no
paper detection control
The remaining paper quantity is detected by
PS102 (HCI remaining paper detection 1),
PS103 (HCI remaining paper detection 2),
PS104 (HCI remaining paper detection 3),
PS105 (HCI remaining paper detection 4),
and no paper detection is made by PS108
(HCI no paper detection).
The signals detected by these sensors are
controlled by HCIDB (HCI drive board) and
displayed on the MFP display.
1 Operation
a Remaining paper detection control
The remaining paper quantity is
determined from the on/off combination
of sensors PS102 (HCI remaining paper
detection 1), PS103 (HCI remaining
paper detection 2), PS104 (HCI
remaining paper detection 3), and
PS105 (HCI remaining paper
detection 4), which detects the
rotational position of M100 (HCI
UP/DOWN) that is driving the up/down
plate. Each sensor turns on or off
according to the position of the
remaining paper detection gear which is
linked with the rotation of M100.
The remaining paper quantity is
detectable at eight levels, but it is
displayed on the MFP display as five
levels.
Remaining paper quantity and display
Note The remaining paper quantity
is indicated on the control
panel with four horizontal
bars.
Stacked paper quantity differs
depending on the thickness of
the paper.
b No paper detection control
When there is no more paper inside the
HCI, PS108 (HCI no paper detection)
turns on and a message is displayed on
the MFP display.
2 Signals
a Input signals
1 SIG (PS102 to HCIDB)
Remaining paper detection gear
rotational position detection signal
[L]: PS102 off
[H]: PS102 on
Stacked paper
quantity
PS102 PS103 PS104 PS105 Remaining
paper
quantity
display
0 to 700 OFF OFF OFF OFF 1 flashing
701 to 1200 ON OFF OFF OFF 1 on
1201 to 1700 ON ON OFF OFF 2 on
1701 to 2200 ON ON ON OFF 2 on
2201 to 2700 ON ON ON ON 3 on
2701 to 3200 OFF ON ON ON 3 on
3201 to 3700 OFF OFF ON ON 4 on
3701 or more OFF OFF OFF ON 4 on