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6-23
FS-1900
6-1-3 Other problems
(1) False “Close paper transfer unit”
(2) False “Close top cover”
False
"Close paper
transfer unit"
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 transfer unit
close scurely, does pin
#20 voltage change
0 to 24 V
DC?
False "Close
top cover"
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?
Содержание Mita FS-1900
Страница 1: ...SERVICE MANUAL Published in Dec 01 Revision 1 1 Laser printer...
Страница 9: ...Chapter 1 P r o d u c t I n f o r m a t i o n...
Страница 27: ...Chapter 2 Installation Operation...
Страница 53: ...Chapter 3 Maintenance Adjustments...
Страница 76: ...Chapter 4 O p e r a t i o n O v e r v i e w...
Страница 114: ...Chapter 5 D i s a s s e m b l y...
Страница 144: ...FS 1900 5 31 8 Remove two screws 9 9 Split the fuser unit 0 Figure 5 2 28 Splitting the fuser unit 9 0 9...
Страница 151: ...Chapter 6 T r o u b l e s h o o t i n g...
Страница 198: ...Appendix A D i a g r a m s...
Страница 208: ...Appendix B S t a t u s P a g e...
Страница 215: ...Appendix C I n t e r f a c e...