Kyocera FS-1900 - Page 109

4-34
FS-1900
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 transfer unit
Top cover
Actuator
Engine board
Side cover interlock
switch (SW703)
Top cover/
paper transfer
unit interlock
switch (SW702)
+24V2
+24V1
Side cover
Engine
gate
array
(U204)
Top cover
switch (SW701)
B
A
C
Ready
Close top cover
Close top cover Close paper transfer unit
Close top cover Close left cover
Close top cover Close paper transfer unit Close left cover
Close paper transfer unit Close left cover
Close paper transfer unit
Close left cover
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