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ENWW Corona unit section 61
MFP unit explanation
M10 (transfer/separation
cleaning) control
M10 (transfer/separation cleaning) is a DC
motor powered by 24 VDC and is controlled
by PRCB (printer control board) via ADUDB
(ADU drive board). Between PRCB and
ADUDB, signals are exchanged using serial
data.
1 Operation
a Purpose of driving
M10 (transfer/separation cleaning) used
to drive the transfer/separation wire
cleaning pads.
b Operation timing
The transfer/separation wires are
cleaned when SW2 (sub power) is
turned on or when the fuser
temperature is lower than 50° C.
It is also carried out after the specified
copy count is reached.
*Changeable with the 25-mode DIP SW
c Cleaning operation
Normally, the transfer/separation wire
cleaning pads are on the front side of
the machine. They move back and forth
to clean the transfer and separation
wires. The movement direction is
changed by changing the rotational
direction of M10 (transfer/separation
cleaning).
The rotational direction of M10 and the
position of the cleaner are detected by
monitoring the current value of M10 with
PRCB (printer control board).
2 Signals
a Input signals
1 IO_URXD (ADUDB to PRCB)
Serial data used to report the ADUDB
(ADU drive board) operation state to
PRCB (printer control board)
2 REQ1 (ADUDB to PRCB)
This signal indicates that sending
data from ADUDB (ADU drive board)
to PRCB (printer control board) is
requested.
When ADUDB receives ACK1 and
can send data, this signal stands at
the [L] level.
3 IO_UCLK (ADUDB to PRCB)
Clock signal for IO_URXD signal
b Output signals
1 SEP_CLM_M A, B (ADUDB to M10)
M10 (transfer/separation cleaning)
drive control signal
The drive direction of M10
(transfer/separation cleaning) drive
control signal
The drive direction of M10 is
controlled by switching between the
drive current directions of two signals.
ADUDB
SEP CLM M A
SEP CLM M B
PRCB
IO DTXD
IO DCLK
ADU LATCH
IO UCLK
REQ1
IO URXD
ACK1
ERR OUT1
DCPS
24V1
5V2
S.GND
P.GND
5V2
S.GND
M10
Status SEP_CLM_MA SEP_CLM_MB
Forward
stroke of
cleaning
HL
Backward
stroke of
cleaning
LH
Stop L L