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ENWW Paper feed section 11
HCI unit explanation
2 CONV_PS (PS106 to HCIDB)
Conveyance roller exit paper
detection signal
[L]: Paper detected
[H]: Paper not detected
3 PR_PS (PS107 to HCIDB)
Conveyance roller entrance
(pre-registration position) paper
detection signal
[L]: Paper detected
[H]: Paper not detected
4 SIDOP_PS (PS110 to HCIDB)
Jam access door open/close
detection signal
[L]: Door opened
[H]: Door closed
5 HCIM_EM (M101 to HCIDB)
M101 rotation error detection signal
[L]: M101 rotating
[H]: M101 not rotating
6 IO_DTXD (MFP to HCIDB)
Serial data to transmit MFP PRCB
(printer control board) operating
status to HCIDB
7 HCI_LATCH (MFP to HCIDB)
IO_DTXD signal latch signal
8 IO_DCLK (MFP to HCIDB)
IO_DTXD signal clock signal
9 ERR_OUT4 (MFP to HCIDB)
Signal to notify HCIDB (HCI drive
board) when there is error in the MFP
10ACK4 (MFP to HCIDB)
Serial data transmission enable
signal from HCI to MFP PRCB
(printer control board)
b Output signals
1 CONT (HCIDB to MC101)
MC101 (HCI feed MC) ON/OFF drive
signal
[L]: MC101 on
[H]: MC101 off
2 CONT (HCIDB to MC102)
MC102 (HCI first paper feed MC)
ON/OFF drive signal
[L]: MC102 on
[H]: MC102 off
3 CONT (HCIDB to SD100)
SD100 (HCI first paper feed) ON/OFF
drive signal
[L]: SD100 on
[H]: SD100 off
4 HCIM_CONT (HCIDB to M101)
M101 (HCI paper feed) ON/OFF
control signal
[L]: M101 on
[H]: M101 off
5 IO_URXD (HCIDB to MFP)
Serial data to transmit the HCIDB
(HCI drive board) operating status to
MFP PRCB
6 IO_UCLK (HCIDB to MFP)
IO_URXD signal clock signal
7 REQ4 (HCIDB to MFP)
Serial data send request signal from
HCI to MFP PRCB
8 HCIM_CLK (M101 to HCIDB)
M101 (HCI paper feed) rotational
speed control clock signal
9 HCIM_F/R (M101 to HCIDB)
M101 (HCI paper feed) rotational
direction indication signal
This MFP always indicates [H]:
normal rotation.