Mf4780W/Mf4770N/Mf4750 - Canon imageCLASS MF4890dw Service Manual

■ MF4780w/MF4770n/MF4750

10 9
Control Panel PCB
J403
+5R
GND
F
1 2
KI1
1
KI2
2
KI3
3
KI4
4
KI5
5
GND
6
+3.3R
7
RESET
8
A0P
9
CS1
10
SDATA
11
SCLK
12
GND
13
+5.5R
14
GND
15
KO0/LED401
E 16
KO1/LED402
17
KO2/LED403
18
KO3/LED404
19
KO4/LED405
20
KO5/LED406
21
KO6/LED407
22
XWR1
23
ESS_LED
24
ESS_KEY
25
W-LED
26
27
28
29
30
Reader
Motor
D
LCD
B0/
B0
SADF Motor
A0/
A0
C
DS
GND
DS Sensor
+3.3V
DES
GND
+3.3R
DES Sensor
SADF model only
Speaker
B
A
10 9
8 7
VIN
MODE
GND
+3.3R
VREF
SP
CIS UNIT
CLK
+5.5R
LED_B
LED_G
LED_R
GND
+24V
+24V
+24V
GND
GND
GND
+3.3V
Overvoltage detection
S_RST/
E_RST/
SC
SCLK
Main Controller PCB
BDO/
B0/
B0 GND
VDO2/
A0/
VDO2
A0
GND
VDO1
VDO1/
GND
+5V
GND
WIFI RESET/
N.C
+3.3V
SD DATA2
SD DATA0
SD CMD
MAC LINK LED
M_WAKEUP
GND
SD CLK
GND
H_WAKEUP
SD DATA3
+3.3V
SD DATA1
GND
GND
ONOFF1
RING_CLK
ONOFF2
GND
2 +24V
SP
1
J601 J602
8 6 4 2 1 2
1 2
7 5 3 1
1 3 5 7
(for AUS, EU)
1 2
2 4 6 8 1 2
J1201 J1204
TEL_RING
TEL_TIP
FAX-NCU PCB
(FAX 100V model only)
(FAX model only)
FG900
(FAX 100V model only)
8 7
6 5
(FAX model only)
TR_CABLE(100V)
Toner
Sensor
TR_CABLE(120V)
TR_CABLE(230V)
4 3 2 1
HV
J304
Engine Controller PCB
GND
TEST
SO
SI
J501
WiFi
module
GND
SWON
1 2
J1104 3 5
Pseudo CI
1 2
PCB
4 6
SW PCA
J104
1 3 J581
J911
2 1
TAG_IN
TAG_OUT
1
2 INLET
3
6 5
4 3 2
GND
16
GND
15
GND
14
GND
13
+24P2
12
+24P2 Encoder Sensor
11
+24P2
10
+24P2
9
+5R
8
1 2 3
FANON
7 MTRPWM
J1152
ACC
6 Motor Driver PCB +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
M
BDIR/
GND
1 2 3 4
VDO2/
Laser Scanner Motor
VDO2
GND
Laser
VDO1
Driver PCB
VDO1/
GND
CNT2
CNT1
CNT0
Laser Scanner Unit
+3.3V
Multi Pickup
GND BIAS_PCA
MUL_SNS/ Sensor
BIAS_PWB
JP1201 JP1202
+24U
Pickup Solenoid
SL
2
Thermoswitch Fixing Delivery Unit
TP
Thermistor
Fixing Heater
1
Fixing Delivery
/Paper Width Sensor PCB
Fixing Paper
+3.3U
1
POSNS/ Delivery Width
GND
2
PWSNS/
Sensor
3 Sensor FSRTH
GND
4
FSRTH
5 Thermistor
1 2 3 1 2 3
+3.3U Paper Leading Edge Sensor
3
PISNS/
2
GND
1
1 2 3
Memory Tag
J3
1
2
4 3 2
9-6
1
F
E
Main Motor
D
C
B
A
1
P.3
F-9-3
9-6