Konica Minolta FS-107, Service Handbook

Page: 28 / 40

FS-107
2-12
1
OUTLINE
2
UNIT EXPLANA
TION
3
DIS./ASSEMBL
Y
1. Operation
a. Up/down operation
When the tip of the paper turns PS702 ON, the tray is
driven down by a certain amount. After the rear of the
paper turns PS702 OFF, M706 turns ON driving the
tray up until PS703 is turned ON.
b. Full-stack detection operation
When a tray other than tray 1 is selected and PS703
is turned ON when PS704 is ON, the paper-full
condition is detected. When tray 1 is selected and PS
703 is turned ON when PS706 is ON, the paper-full
condition is detected.
c. Automatic tray switching operation
When tray 1, optional tray 1, and optional tray 2 are
selected and the paper-full condition is detected,
M706 drives the tray up so that PS703 is turned OFF
and then ON again, and the immediately lower tray is
set at the paper exit position.
When tray 2 is selected and the paper-full condition is
detected, M706 drives the tray down until PS716 is
turned ON, and then up until PS703 is turned ON, set
tray 1 at the paper exit position.
2. Signal
a. Input signal
(1) PS704 (PS704
→
FS CB)
Paper-full detection signal
Goes [H] when paper-full condition is detected.
[6] Stapler control
PS708
5VDC
PS708
SGND
FS CB
M705
24VDC
24VDC
M705 OUT A
M705 OUT A
M705 OUT B
M705 OUT B
24VDC
24VDC
24VDC
5VDC
5VDC
SGND
SGND
PGND
PGND
PGND
SGND
SGND
M ACK
SGND
S REQ
M RXD
SGND
S ACK
M REQ
SGND
M TXD
MAIN BODY
M705 (staple shift motor) performs staple displacement
control by moving the stapler unit up to the stapler
operation position.
The home position of the stapler unit is detected by PS708
(stapler unit HP detect PS).
M705 is controlled by FS CB (FS control board).
1. Operation
The stapler unit is usually at the home position of the
finisher.
When receiving a command signal from the main
unit, M705 moves the stapler unit to the stapling
position according to paper size and starts the
stapling operation.
After finishing the copy, M705 moves the stapler unit
to its home position.
The M705 OFF timing is controlled by the number of
driving steps after PS708 is turned OFF.