Brother MFC4820C Service Manual page 257

MFC4820C/MFC4420C
WIRING DIAGRAM
PANEL_S
BACKLIGHT
PCB LCD
PCB
CN1 PANEL_S CN4 LCD_BL
CN3 LCD
4 KO3 2 BACKLIGHT
6 VDD
3 KI2 1 +30V
5 VSS
2 KI4
4 VREF
1 KO4
3 STB
2 SCK
COVER 1 DATA
PANEL_L PCB
SEN
CN22
PANEL
8 MIC_M
7 MIC_P
6 +30V
5 PCLK
4 SO
3 SI
2 GND
1 +5V
CN2 USB
USB
4 DP
3 DN
PCB
2 PC5V
1 GND
CN8 MEDIA1
CN7 MEDIA2
22 MDCSN
21 MDWRN
21 MDO2
20 MDRSTN
20 MDO14
19 MDACKN
19 MD01
18 MDREQN
18 S0V
17 MDINT
17 MD015
16 S0V
16 MDA2
15 MDO8
15 MDA13
14 MDO7
14 MDA3
13 MDO9
13 S0V
12 S0V
12 MDA12
11 MDO6
11 MDA4
10 MDO10
10 MDA11
9 MDO5
9 MDA5
8 MDO11
8 +5V
CN9 CART
7 S0V
7 MDA10
7 S0V
6 MDO04
6 MDA6
6 +5V
5 MDO12
5 MDA9
5 EMP
4 MDO3
4 MDA7
4 M_CNT
3 MDO13
3 +3.3V
3 Y_CNT
2 S0V
2 MDA8
2 C_CNT
1 MDRDN
1 MDD0
1 BK_CNT
INK CARTRIDGE
MEDIA PCB
SENSOR PCB
INK EMPTY
SENSOR
x 4
PURGE SW
CN1 PURGE
2 GND
*
1 PURGE
HOOK
REGISTRATION
SW
CIS UNIT SENSOR
CN1 CIS
CN3 HOOK
12 FG
2 HOOK
11 R-GND
1 S0V
10 G-GND
9 B-GND
8 VLED
7 CLK
6 TG
5 VREF
4 VCC
3 GND
2 GND
CN4 HEAD2
1 AD
28 E_ENCA
27 E_VDD
26 E_LED
25 VSS2
24 VSS2
23 SIN20
MAIN PCB
22 VSS1
21 SIN20
20 VSS1
19 SIN22
18 VDD1
17 CLK1
16 VSS1
15 STB1
14 VSS1
13 FIRE01
12 FIRE00
11 FIRE02
10 FIRE04
9 FIRE05
8 FIRE06
7 FIRE16
6 FIRE15
5 FIRE14
CN10 BAT
4 FIRE12
4 GND
3 FIRE11
3 BAT_N
CN16 SP
2 FIRE10
2 BAT_P
2 VOUT1
1 VREF1
1 BATCHK
1 VOUT2
*
BATTERY
SPEAKER
CR
ENC
ASF SW
CN3 ASF
2 PAPER
1 GND
PF ENC
PCB
SENSOR PCB
LF
ENC
CN21 CN5 LFENC CN19 POWER
SENSOR 6 HTHM 6 HVCONT
5 RESI 5 SLP5V 5 HVDD
4 PAPER 4 HGND 4 HVOFF
3 SLP5V 3 GND 3 +3.3V
2 GND 2 LFENC2 2 S0V
1 PURGE 1 LFENC1 1 +5V
CN6 HEAD1
26 E_ENCB
25 E_GND
24 VDD2
23 VDD2
22 VDD2
21 VSS2
20 CLK2
19 VSS2
18 STB2
17 VREF2
16 FIRE31
15 FIRE32
14 FIRE30
13 FIRE35
CN14 NCU
12 FIRE34
12 PLS
11 FIRE36
11 TELOFF
10 FIRE26
10 CI
9 FIRE24
9 SRL
8 FIRE25
8 GND CN15 MJ
7 FIRE22
7 +30V
7 TEL_SL1
6 FIRE20
6 CMLL 6 TEL_RL1
5 FIRE21
5 RL2 5 TEL_SL2
4 VTEMP
4 RDPS
4 TEL_RL2
3 M_LED
3 EARTH 3 PCMIC
2 M_VDD
2 ADLC/GIJI 2 PCSP2
1 M_OUT
1 POL
1 PCSP1
MODULAR
HEAD FPC NCU
PCB
PCB
PAPER WIDTH
SENSOR
SWITCHING
POWER
SUPPLY
3.3V/5V/30V/HVDD
CIS
main side driver side
TRAVEL
CN12 DRIVER1 CN5
MOTOR
21 EE_CLK 21 EE_CLK
20 PA_PH4 20 PA_PH4
19 CR_STB
19 CR_STB
18 PA_PH2 18 PA_PH2
17 LF_CLK 17 LF_CLK
16 PA_PW1
16 PA_PW1
15 LF_DAT 15 LF_DAT
14 PA_PW2 14 PA_PW2
CN2 POWER CN1 FB_MOT
13 CR_ENB 13 CR_ENB
5 S0V 4 RM_PHBn
12 PA_PH3 12 PA_PH3
4 +30V 3 RM_PHB
11 LF_OSC
11 LF_OSC
3 +30V 2 RM_PHAn
10 PA_PH1 10 PA_PH1
2 P0V 1 RM_PHA
9 CR_PH 9 CR_PH
1 P0V
8 PU_PH2
8 PU_PH2
7 CR_PWM 7 CR_PWM
6 PU_PH4 6 PU_PH4
5 PU_PH3
5 PU_PH3
4 PU_PW2 4 PU_PW2
3 PU_PH1 3 PU_PH1 DRIVER PCB
2 PU_PW1
2 PU_PW1
1 CONN 1 PU_PW1
EEPROM
64K
main side driver side
CN11 DRIVER2 CN3
22 EE_DAT 22 EE_DAT
21 RM_PH1 21 RM_PH1
20 LF_PH
20 LF_PH
19 RM_PH2 19 RM_PH2
18 LF_ENB 18 LF_ENB
17 RM_PW2
17 RM_PW2
16 LF_STB 16 LF_STB
15 ST_CNT 15 ST_CNT
14 LF_PWM
14 LF_PWM
ASF
13 RM_PW1 13 RM_PW1
MOTOR
12 +5V 12 +5V
*
11 RM_PH3
11 RM_PH3
10 PK_PWM 10 PK_PWM
9 RM_PH1 9 RM_PH1
8 P0V
8 P0V
7 P0V 7 P0V
6 PK_VOL
6 SLP5V
5 +30V
5 +30V
4 +3.3V 4 +3.3V
3 S0V
3 S0V
2 S0V 2 S0V
1 PK_ENC 1 PK_ENC
AIR
PUMP
MOTOR
PAPER
FEED
MOTOR
CN1
ENC
2 MOTOR_+
1 MOTOR_-
AIR PUMP
ENC PCB
CN4 LF_MOT & PUKU_MOT
7 SLP5V
6 PUKU_ENC
5 S0V
4 PUKU-
3 PUKU+
2 LF_OUTA(-)
1 LF_OUTB(+)
CN6 CR & PURGE & PAPER_MOT
10 CR_OUTA(+)
9 CR_OUTB(-)
8 PURGE_PHAn
7 PURGE_PHA
6 PURGE_PHBn
5 PURGE_PHB
4 PAPER_PHAn
3 PAPER_PHA
2 PAPER_PHBn
1 PAPER_PHB
CR
PURGE
MOTOR
MOTOR
*
Not provided on the MFC4420C.