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2. Signals
a. Input signals
(1) PS305 (PS305 → RADFCB)
Paper feed original detection signal
[L]: Original exists.
[H]: Original does not exist.
(2) DFRXD (MAIN BODY → RADFCB)
Serial data line which transmits the operation status of
the main body CB to the RADF
(3) DFREQ (MAIN BODY → RADF CB)
RADF operation start request signal
b. Output signals
(1) M302 DRIVE A, A, B, B (RADF CB → M302)
M302 (paper feed) ON/OFF drive signal
(2) TXD (MAIN BODY → RADF CB)
Serial data line which transmits the operation status of
the RADF to the CB.
(3) ACK (MAIN BODY → RADF CB)
Clock signal for signal synchronization when
communication is taking place between the RADFCB
and the main body CB.
[4] Conveyance Control
When an original is fed from the paper feed section, it is set
in the copy position. The original is conveyed as a result of
the transfer of the drive force of M302 (conveyance) to the
drive roller.
M302 is controlled by the RADFCB (RADF control board).
1. Operation
a. Conveyance operation (during paper feed)
When PS305 (paper feed) detects the leading edge of the
original, M302 goes ON after the specified period, then the
conveyance operation starts.
b. Conveyance operation (during reversal)
When PS306 (paper exit) detects the trailing edge of the
original, M302 rotates in reverse after the specified period,
and stop after the specified period from reverse PS goes
ON.
RADFCB
103-A7
103-A8
103-A9
103-A10
103-A11
103-B1
104-A5
104-B5
102-5
101-1
101-2
101-4
101-5
101-6
101-7
101-8
101-9
24VDC
24VDC
M302 DRIVE A
M302 DRIVE A
M302 DRIVE B
M302 DRIVE B
5VDC
SGND
PS305
PS305
M302
100-11
100-12
100-10
100-6
100-1
100-8
100-3
1007
24VDC
PGND
5VDC
SGND
DF TXD
DF ACK
DF RXD
DF REQ
CB
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