Mf4720W/Mf4712/Mf4710 - Canon imageCLASS MF4890dw Service Manual

■ MF4720w/MF4712/MF4710

10 9
F
Control Panel PCB
J403
+5R
GND
1 2
1
2
3
4
5
6
7
8
9
10
E
11
+3.3R
12 RESET
13
14
15
SDATA
16 SCLK
17
18
+5.5R
19
20
KO0/LED401
21
KO1/LED402
22
KO2/LED403
23 KO3/LED404
24
KO4/LED405
25
KO5/LED406
26 KO6/LED407
D 27
XWR1
28
ESS_LED
29
ESS_KEY
30 W-LED
LCD
C
B
A
10 9
8 7
KI1 VIN
KI2
MODE
KI3
GND
KI4 +3.3R
KI5
VREF
GND
SP
CLK
+5.5R
A0P
LED_B
CS1
LED_G
LED_R
GND
GND
GND
+24V
+24V
+24V
GND
GND
GND
+3.3V
Overvoltage detection
S_RST/
E_RST/
Main Controller PCB
SC
SCLK
BDO/
GND
VDO2/
VDO2
GND
VDO1
VDO1/
GND
+5V
8 7
6 5 4
TR_CABLE(100V)
TR_CABLE(120V)
TR_CABLE(230V)
HV
J304
CIS UNIT
+3.3V
Engine Controller PCB
MUL_SNS/
GND
TEST
SO
SI
Thermoswitch
J501
+24V
ERP
LED
GND
SWON
POSNS/
PWSNS/
3 5
FSRTH
1 2
4 6
ERP SW PCA
PISNS/
J104
1 3 J581
2 1
TAG_IN
TAG_OUT
1
INLET
2
3
6 5 4
3 2
GND
16
GND
15
GND
14
GND
13
+24P2
12 Encoder Sensor
+24P2
11
+24P2
10
+24P2
9
+5R
8 1 2 3
FANON
7 MTRPWM
ACC J1152
Motor Driver PCB
6
+24P2
DEC
5
MTRPWM/
4
MFG
3
DUPSOL
2
J1153
FANLOCK
1 J1151
4 3 2 1
1 2 3 4
GND J801
+5V
J802
BDIR/ M
GND
1 2 3 4
Laser Scanner Motor
VDO2/
VDO2
Laser
GND
VDO1 Driver PCB
VDO1/
GND
CNT2
CNT1
CNT0
Laser Scanner Unit
Multi Pickup
GND BIAS_PCA
Sensor
BIAS_PWB
JP1201 JP1202
+24U
Pickup Solenoid
SL
2 Fixing Delivery Unit
TP
Thermistor
Fixing Heater
1
Fixing Delivery
/Paper Width Sensor PCB
Fixing Paper
+3.3U
1
Delivery Width
2 GND
Sensor
3 Sensor FSRTH
GND
4
5
Thermistor
1 2 3 1 2 3
Paper Leading Edge Sensor
+3.3U
3
2
GND
1
1 2 3
Memory Tag
J3
1
2
3 2
9-8
1
F
E
Main Motor
D
C
B
A
1
P.5
F-9-5
9-8