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10 HCI unit explanation ENWW
First paper feed control
The first paper is fed by the pick roller and
the feed roller, driven by M101(HCI paper
feed) via MC101(HCI feed MC). The pick
roller and feed roller touch the paper when
SD100 (HCI first feed) is on, feeding the
paper to the conveyance roller. Then, SD100
(HCI first paper feed) turns off to release the
pick roller and feed roller from the paper.
The conveyance roller is also driven by
M101, by turning on MC102 (HCI first feed
MC), paper is fed to the MFP.
The related signals are: PS100 (HCI top
cover open/close detection), PS106 (HCI
feed), PS107 (HCI first feed), and PS110
(HCI jam access door open/close detection).
1 Operation
a First paper feed timing
1 Start of first paper feed
At predefined interval after the START
button is pressed.
2 Start of second and subsequent
papers
When PS106 (HCI feed) is turned off
by the preceding paper.
3 OFF timing
When the MFP M7 (paper exit) turns
off.
b Interlock
The power supply line of M101 (HCI
paper feed) is equipped with MS101
(HCI interlock/1) and MS102 (HCI
interlock/2). When the top cover is
opened, MS101 turns off, and when the
jam access door is opened MS102 turns
off, thereby cutting off the power supply
to M101.
Furthermore, the top cover is equipped
with PS100 (HCI top cover open/close
detection) and the jam access door is
equipped with PS110 (HCI jam access
door open/close detection) and when
either of these doors is opened during
paper feed, the M101 drive signal is
turned off to stop the paper feed
operation.
c Internal heater
The HCI is equipped with HTR101 (HCI
internal heater) to protect the paper
from humidity. HTR101 is directly
controlled by the MFP PRCB (printer
control board) rather than by the HCIDB
(HCI drive board).
2 Signals
a Input signals
1 UPOP_PS (PS100 to HCIDB)
Top cover open/close detection signal
[L]: Cover opened
[H]: Cover closed