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A-10
FS-1900
+
−
1
3
1
2
1
2
1
2
3
FUDR
+24V2
FDDR
S02413
3
2
1
+5V2
FDPFUL
GND
2
1
+5V1
THERM
S02415
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
FDPFUL*
+24V2
FUDR
FDDR
EXITP
AP*
THERM
GND
+5V1
10
8
6
4
2
12
9
14
7
16
17
18
1
3
11
5
13
15
10
8
6
4
2
12
9
14
17
16
7
18
1
3
11
5
13
15
+24V2
REGDR*
Optional
unit I/F
connctor
Pa
ra
llel I/F
USB
I/F
Main boar
d
(KP-948)
(YS02)
(YC07)
(YC201)
A1
B1
A20
B20
A1
B1
A20
B20
1
2
3
4
1
2
1
2
1
2
3
4
S02401
S02423
S02419
S02405
+24V2
GND
MMOTN*
MMOTRDY*
Registration
clutch
(YC803)
(YC802)
(YC03)
+24V2
FDDR*
1
2
1
2
Feed clutch
(YC804)
+24V2
MPFSOL*
MP Feed
solenoid
(YC805)
+24V2
MIDDR*
Middle feed
clutch
(YC806)
FANDR
GND
Cooling
fan
motor
(YC807)
(YC808)
(YC801)
(YC809)
LCD contr
o
ller boar
d
(KP-738)
Engine rela
y boar
d (KP-760)
T
emperature
/humidity
sensor
6
5
4
3
2
1
1
2
3
4
5
6
1
2
3
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
7
2
8
3
9
4
10
5
11
6
12
1
2
3
1
2
3
1
2
3
4
5
6
+3.3V1
FPDATA
FPDIR
FPCLK
GND
FPRST*
S02402
S02406
S02403
S02404
S02408
S02407
S02409
S02410
S02400
Pin photo diode
sensor [boar
d]
(KP-746)
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
1
2
1
2
1
2
1
2
1
2
(YC04)
(YC01)
(YC08)
(YC02)
(YC06)
+5V3
PD*
GND
POLCLK
POLRDY*
POLON*
GND
+24V2
POLCLK
POLRDY*
POLON*
GND
+24V2
Po
lygon motor
APC boar
d
(KP-742)
(YC602)
(YC601)
Optional unit
I/F connector
OP24V
GND
OP5V
(PFSEL)
OPSCLK
OPSEL0
OPSDI
OPSEL1
OPSD0
OPSEL2
OPRDY*
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Engine boar
d
(KP-864)
Fuser boar
d
(KP-756)
T
op co
ver/paper transf
er
unit interloc
k
s
w
itc
h
Left
co
ver
interloc
k
sw
itc
h
1
2
3
4
5
6
7
8
9
10
1
2
3
4
1
2
3
4
5
6
7
8
9
10
29
30
31
32
33
34
29
30
31
32
33
34
(YC205)
GND
FPCLK
PFDIR
FPDATA
+3.3V1
FPRST*
GND
FANDR
+24V2
MMOTON*
GND
MMOTRDY*
+24V2
MPFSOL*
FEDDR*
MIDDR*
+24V2
REGDR*
+5V3
SAMPLE*
POWCONT
LASER*
VDD+
VOO-
GND
PDIN*
GND
19
20
21
22
23
24
25
26
27
28
19
20
21
22
23
24
25
26
27
28
AIRTEMP
+5V1
WETCK1
WETCK2
(YC203)
(YC209)
(YC206)
(YC704)
(YC701)
(YC703)
(YC702)
(YC204)
4
3
2
1
4
3
2
1
1
2
3
4
5
1
2
1
2
(YC207)
(YC831)
(YC834)
(YC833)
(YC832)
+24V2
(YC208)
+24V2
CONTYPE
TMOTDR
+5V2
DLPTYPE
HANDS*
RTRCHON*
HUNIT*
MCHON*
GND
HVCLK
TONSCAN
TRCHON*
TNEMP*
TRVSEL3*
+5V1
TRVSEL1*
TRVSEL2*
+24V1
+24V1
+24V1
+24V2
+24V2
+24V2
ERASEDR
WTNLED*
TNRFUL*
+5V2
GND
EEDIO
EECLK
REGPAP
PVOLAN1
TCPVP
FCPVP*
CASIZE
PVOLAN2
Sensor boar
d
(KP-754)
4
3
2
1
N.C. (GND)
ERASEDR
N.C. (GND)
WTNLED*
EECLK
TNRFUL*
EEDIO
N.C. (+5V2)
GND
+5V2
Drum boar
d
(KP-748)
(YC741)
(YC743)
(YC742)
(YC771)
(YC761)
1
2
2
1
1
2
2
1
2
1
W
aste
toner full
sensor
[boar
d]
(KP-766)
Eraser
lamp
[boar
d]
(KP-752)
S02411
S02412
+5V2
WTNLED*
ERASEDR
GND
CAS0
COM
CAS1
CAS2
24/23
22/21
20/19
18/17
16/15
14/13
12/11
10/9
8/7
6/5
4/3
2/1
24/23
22/21
20/19
18/17
16/15
14/13
12/11
10/9
8/7
6/5
4/3
2/1
+24V1/+24V1
+24V1/+24V1
GND/GND
GND/GND
+5V1/+5V1
+5V1/+5V1
ZCROSS/HEATON*
+24V2/SLEEP*
+5V2/GND
THERM/EXITPAP*
FDDR/FUDR
+24V2/FDPFUL*
(YC202)
(YC901)
Po
wer suppl
y unit
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
2
1
3
2
1
1
2
3
W
aste
toner full
sensor
(receiver)
C
E
F
ace
up/do
wn
solenoid
1
2
3
1
2
3
P
aper full
sensor
Exit
sensor
MP tra
y
paper
sensor
Option
feeder
sensor
Thermistor
Thermal cutout
Heater lamp
Contr
o
ller
unit fan
motor
5V)
GND
+5V1
DBTX
DBRX
DBCLK
GND
Hight v
o
lta
g
e
unit
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
9
8
7
6
5
4
3
2
1
9
8
7
6
5
4
3
2
1
TPMSCAN
(GND)
TMOTDR
GND
COM
CNTYPE
T
oner
sensor
Po
wer
sw
itc
h
(YC902)
(CN2)
(CN1)
AC
inlet
AC
input
+24V2
OP24V
1
12
P
aper
siz
e
s
w
itc
h
T
oner
motor
MP
feed roller
OP24V
OP24V
1
3
Option DIMM
System DIMM [boar
d]
(KP-893)
S02116
S024**
TONSCAN
GND
TMOTDR
GND
1
2
1
2
MICR
switch
+24V2
Grid
Magnet roller
Transfer roller
1
2
3
4
1
2
3
4
10
8
6
4
2
12
9
14
7
16
17
18
1
3
11
5
13
15
10
8
6
4
2
12
9
14
7
16
17
18
1
3
11
5
13
15
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Zener board
(KP-768)
1
2
1
2
+24V2
+5V1
OP24V
OP5V
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
T
op co
ver
sw
itc
h
P
aper gaug
e
sensor 1
Registration
sensor
P
aper gaug
e
sensor 2
To
PF-60, DU-60 or HS-60
Compact
Flash
MicroDrive
KUIO-L
V
Netw
ork
interface
car
d
(Option)
Main motor
S02420 :
120
V A
C
model
S02421 :
220 - 240
V A
C
model
Optional
memory
card slot
Optional
hard disk
drive slot
(Centronics)
(YC651)
S02424
Serial I/F
car
d
(Option)
(RS232C)
(YC05)
1
9
Wiring diagram
Summary of Contents for Mita FS-1900
Page 1: ...SERVICE MANUAL Published in Dec 01 Revision 1 1 Laser printer...
Page 9: ...Chapter 1 P r o d u c t I n f o r m a t i o n...
Page 27: ...Chapter 2 Installation Operation...
Page 53: ...Chapter 3 Maintenance Adjustments...
Page 76: ...Chapter 4 O p e r a t i o n O v e r v i e w...
Page 114: ...Chapter 5 D i s a s s e m b l y...
Page 151: ...Chapter 6 T r o u b l e s h o o t i n g...
Page 198: ...Appendix A D i a g r a m s...
Page 208: ...Appendix B S t a t u s P a g e...
Page 215: ...Appendix C I n t e r f a c e...