Kyocera FS-1800 - Page 110

4-35
FS-1800/1800N | FS-3800/3800N
The interlock circuit outputs the three different detection signals which are combined in matrix to
produce various levels of situations regarding the covers. The subsequent status is displayed on the
message display.
Figure 4-3-12 Interlock circuit
GND
GND
GND
GND
+5V2
COM
COM
N.O.
N.O.
N.C.
N.C.
Paper feed unit
Top cover
Actuator
Engine board
Side cover interlock
switch (SW703)
Top cover/
paper feed
unit interlock
switch (SW702)
+24V2
+24V1
Side cover
Engine
gate
array
(U204)
Top cover
switch (SW701)
B
A
C
Ready
Top cover open
Top cover open Feed open
Top cover open Side cover open
Top cover open Feed open Side cover open
Feed open Side cover open
Feed open
Side cover open
Operator panel message display
Output level
NOTE: Message display priority is from left to right.
ABC
H
L
L
L
L
L
L
L
L
H
H
H
H
L
L
L
H
L
L
L
L
L
L
H