Service manual

Circuit diagram
1324
6
5
4
3
2 1
D
C
B
A
Pick-up solenoid
SW101
Power switch
M
1 32 4
Laser Drive
PCB
BD
sensor
Laser / Scanner unit
Door switch
SW301
M
1 32 4
INL101
FU101
Fuse
FU102
Fuse
100-127V only
2468
13579
2 1
TP1
12
H701
2 1
TH1
12
J1102
12
12
FSRTH
GND
J102
J204
Thermistor
Fixing heater
Thermal fuse
Fixing film unit
123
PS803
132
132
Paper delivery
sensor
J203
312
J802
12
12
SL001
Paper delivery sensor PCB
CPUD
+24V
+3.3V
POSNS
GND
132
Inlet
1 32 4
1 32 4
1 357 9
246 8
GND
/VDO
VDO
GND
CNT1
CNT0
GND
+5V
/BDI
J002
J801
GND
/DEC
/ACC
+24VR
J904
J905
USB interface
Scanner motor
Fixing unit
642531
FWD
/SI
/SO
/CLK
/STRB
GND
J901
Formatter
Engine controller PCB
1 2
J201
Power supply PCB
1 3 5 7 9 1113151719
2 4 6 8 1012141618
21
20 22
23
24
25
26
Centronics interface
J2
J902
1 32
1 32
ACH
ACN
1324
1324
423 1
123
PS802
123
PS801
To p o f
sensor
Paper width
sensor
Top of page / paper width sensor PCB
J801
+3.3V
PISNS
PWSNS
GND
J202
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
+24VR
GND
+24VR
GND
+24VR
GND
+3.3V
+24V
/POSNS
GND
/PISNS
PWSV
/PWSNS
PRPWM
PRAC
DVAC
TRNDC
TRPDC
FSRD
FSRTH
RLYD
TRCRNT
DOSNS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1 32 4
1 32 4
J001
/MB
MB
/MA
MA
J909
Main motor
4 231
4231
1 3
5
7 91113
2
4
6 8101214
1 3 5 7 911132 468101214
+24VR
CPUD
+5V
GND
GND
+3.3V
/RESETO
/SCLK
/SC
/BDO
GND
/VDO
VDO
GND
J910
2
1
1
2
ACN
ACH
P5
J5
J6
2
1
page
Figure 6-8 Circuit diagram
130 Chapter 6 Troubleshooting ENWW