Kyocera FS-1800 - False Paper Feed Unit Open; False Top Cover Open; Other Problems

6-25
FS-1800/1800N | FS-3800/3800N
6-1-3 Other problems
(1) False “Paper feed unit Open”
(2) False “Top cover Open”
False "Paper
feed unit Open"
Measure voltage #12
pin of YC701 on sensor
board (KP-754).
Connect circuit tester to
pin #20 of YC203 on
engine board (KP-864).
Yes
Yes
No
No
Replace engine board
(KP-864). See page 5-22.
Replace sensor board
(KP-754). See page 5-26.
When
paper feed unit
close scurely, does pin
#12 voltage change
0 to 24 V
DC?
Replace sensor board
(KP-754). See page 5-26.
When
paper feed unit
close scurely, does pin
#20 voltage change
0 to 24 V
DC?
False
"Top cover open"
Measure logic level #11
pin of YC701 on sensor
board (KP-754).
Yes
No
Replace engine board
(KP-864). See page 5-22.
Replace sensor board
(KP-754). See page 5-26.
When
Top cover
close scurely, does pin
#11 goes low
to high?