Brother MFC-J2320 Service Manual page 346

Wiring Diagram

Carriage PCB ASSY M ain PCB
CN13 HEAD1 CN16 LAN
LAN
FG10 10
HDVTEMP 1 21 VTEMP
S0V 2 20 S0V FG9 9
FIRE_B+ 3 19 FIRE_B+ RD- 8
FIRE_B- 4 18 FIRE_B- RD+ 7
S0V 5 17 S0V NC6 6
NC5 5
SIN_B+ 6 16 SIN_B+
SIN_B- 7 15 SIN_B- NC4 4
S0V 8 14 S0V CT 3
TD- 2
CLK_B+ 9 13 CLK_B+
Head CLK_B- 10 12 CLK_B- TD+ 1
1 VSS2 S0V 11 11 S0V
CN9 USB HOST(Pict Bridge)
USB Host(Pict Bridge)
2 VDD2 CLK_A- 12 10 CLK_A-
FG 6
3 CLK_A- CLK_A+ 13 9 CLK_A+
FG 5
4 CLK_A+ S0V 14 8 S0V
GND 4
5 SIN_A- SIN_A- 15 7 SIN_A-
+DATA 3
6 SIN_A+ SIN_A+ 16 6 SIN_A+
-DATA 2
7 FIRE_A- S0V 17 5 S0V
VCC 1
8 FIRE_A+ FIRE_A- 18 4 FIRE_A-
CN22 USB FUNCTION
9 THM FIRE_A+ 19 3 FIRE_A+
(Device)
USB Function (Device)
10 VSS1_A S0V 20 2 S0V
FG 6
11 VTEMP_A CR_THMOUT 21 1 CR_THM
FG 5
12 VDD1
GND 4
CN12 HEAD2
13 VTEMP_B
DP 3
MEDIA_CNT 1 9 MEDIA_CNT
14 VSS1_B
DN 2
VSS2 2 8 VSS2
15 CLK_B-
PC5V 1
VSS2 3 7 VSS2
16 CLK_B+
VSS2 4 6 VSS2
17 SIN_B- CN8 MEDIA
VSS2 5 5 VSS2 Media
18 SIN_B+
FG 24
VSS2 6 4 VSS2
19 FIRE_B- FG 23
VSS2 7 3 VSS2
20 FIRE_B+ SD_WP 22
VSS1 8 2 VSS1
21 VDD2
SD_COM 21
MEDIA 9 1 MEDIA
22 VSS2 SD_CD 20
CN11 HEAD3 SD_DAT1 19
VDD1(3.3V) 1 8 VDD1 SD_DAT0 18
VDD2(HVDD) 2 7 VDD2 SD_VSS 17
VDD2(HVDD) 3 6 VDD2 MS_VSS 16
VDD2(HVDD) 4 5 VDD2 MS_BS 15
VDD2(HVDD) 5 4 VDD2 SD_CLK 14
SLP3.3V 6 3 SLP3.3V MS_DATA1 13
ENC1 7 2 CR_ENC1 MS_DATA0 12
ENC2 8 1 CR_ENC2 SD_VDD 11
MS_DATA2 10
SD_VSS 9
Certification Chip PCB
MS_INS 8
CN5 MAIN CN1 REFILL SENSOR
Ink Cartridge CN7 CTG SEN MS_DATA3 7
PCB THM 1 1 THM CTG_THM 1 16 CTG_THM
SD_CMD 6
CTG_Y 2 15 CTG_Y
YCTG 2 2 YCTG MS_CLK 5
CTG_K 3 14 CTG_K
KCTG 3 3 KCTG MS_VCC 4
LEDPWR 4 13 LEDPWR
LEDPWR_CTG 4 4 LEDPWR_CTG SD_DAT3 3
CTG_C 5 12 CTG_C
S0V 5 5 S0V MS_VSS 2
CCTG 6 6 CCTG CTG_M 6 11 CTG_M
SD_DAT2 1
EMP_C 7 10 EMP_C
MCTG 7 7 MCT
EMP_M 8 9 EMP_M
LEDCNT_CTG 8 8 LEDCNT_CTG CN10 WLAN
Wireless LAN PCB
EMP_Y 9 8 EMP_Y SDIO_DATA2 8 8 SDIO_DATA2
CN6 EMP SEN EMP_K 10 7 EMP_K SDIO_CMD 7 7 SDIO_CMD
Ink Empty Sensor
CEMP 1 6 CEMP
PCB DO 11 6 Rx SDIO_DATA3 6 6 SDIO_DATA3
S0V 2 5 S0V DI_Y 12 5 Tx_Y SDIO_CLK 5 5 SDIO_CLK
MEMP 3 4 MEM DI_K 13 4 Tx_K
SDIO_DATA0 4 4 SDIO_DATA0
LEDPWR_EMP 4 3 LEDPWR_EMP
DI_C 14 3 Tx_C SDIO_DATA1 3 3 SDIO_DATA1
YEMP 5 2 YEMP DI_M 15 2 Tx_M GND 2 2 GND
KEMP 6 1 KEMP
S0V 16 1 S0V +3.3V 1 1 +3.3V
Modem PCB
Cartridge Sensor CN1 BLACK INK CN2 MODEM/SDAA/MJ
Black
DI_K 1 1 DI_K +3.3V 12 12 +3.3V
DO 2 2 DO +31V 11 11 +31V
CHRG 10
S0V 3 3 S0V 10 CHRG(US GND)
MDM_RSTN 9 9 RESETn
Cartridge Sensor CN2 YELLOW INK
CI 8 8 Rin
Yellow
DI_Y 1 1 DI_Y
MDM_INT 7
7 IRQ
DO 2 2 DO
SPI_CLK 6 6 SCK
S0V 3 3 S0V
GND 5
5 GND
SPI_DO 4 4 SDO
Cartridge Sensor CN3 CYAN INK
Cyan MODEMCS_N 3 3 CSn
DI_C 1 1 DI_C
SPOUT 2
2 MDM_MONITOR(SDAA_PWM)
DO 2 2 DO
SPI_DI 1 1 SDI
S0V 3 3 S0V
CN4 SP
Cartridge Sensor
CN4 MAGENTA INK
Speaker
Magenta VOUT2 2
DI_M 1 1 DI_M
VOUT1 1
DO 2 2 DO
S0V 3 3 S0V
Sensor Relay PCB
CN28 SENSOR_RELAY CN10
CN14 POWER SEN_MP 1 1 SEN_MP
Powe Supply PCB
GND 1 6 P0V SEN_TRAY 2 2 SEN_TRAY
GND 2 5 P0V DOC/ADF_COVER 3 3 DOC/ADF_COVER
PC_HABA/REARB 4 4 PC_HABA/REARB
PSDOWN 3 4 PSDOWN
PSOFF 4 3 PSOFF FSEN 5 5 FSEN
+31V 5 2 +31V RSEN 6 6 RSEN
+31V 6 1 +31V FB_COVER 7 7 FB_COVER
GND 8 8 GND
PF_ENC1 9 9 PF_ENC1
SLP3.3V 10 10 SEN3.3V
PF_ENC2 11 11 PF_ENC2
SEN_SB 12 12 SEN_SB
M ain PCB
2.7inch LCD Model
CN15 PF-MOTOR CN1 PANEL CN4 LCD PCB
Paper Feed Motor 2 PF_M - +31V(LED_A) 50 50 +31V(LED_A)
1 PF_M + BOARD_ID 49 49 BOARD_ID
LED_PWM(LED_C) 48 48 LED_PWM(LED_C)
CN17 CR-MOTOR
47 TOUCH_AD0
TOUCH_AD0 47
Carriage Motor 2 CR_M -
TOUCH_OUT1 46 46 TOUCH_OUT1
1 CR_M +
TOUCH_AD1 45 45 TOUCH_AD1
CN18 ADF-MOTOR
TOUCH_OUT3 44 44 TOUCH_OUT3
ADF MOTOR 4 OUT_C-
TOUCH_OUT2 43 43 TOUCH_OUT2
3 OUT_C+
42 TOUCH_OUT0
TOUCH_OUT0 42
2 OUT_D-
NFC_LED 41 41 NC(Connect C)
1 OUT_D+
ONOFF_KEY 40 40 ONOFF_KEY
39 NC(Connect C)
S0V 39
CN21 FB-MOTOR
HOST_WAKE 38 38 NC(Connect C)
Scanner MOTOR 4 OUT_F-
VSYNC 37 37 VSYNC
3 OUT_F+
I2C_SCL 36 36 I2C_SCL
2 OUT_E-
TOUCH_CAL1 35 35 TOUCH_CAL1
1 OUT_E+
34 I2C_SDA
I2C_SDA 34
NFC_WAKE 33 33 NC(Connect C)
CN4 PURGE CAM
Purge Cam Sensor
3.3V(NFC) 32 32 +3.3V
PCB Power 3 3 3.3V
+5V(LED_POWER) 31 31 +5V(LED_POWER)
S0V 2 2 GND
INTERRUPT 30 30 INTERRUPT
SEN 1 1 SEN_CAM
29 S0V
S0V 29
CN3 RESIST/ LCD_RD 28 28 DCLK
Registration Sensor
CHUTE COVER
TOUCH_CAL0 27 27 TOUCH_CAL0
PCB
3.3V 3 3 3.3V
LCD_WR 26 26 HSYNC
GND 2 2 GND
S0V 25 25 S0V
SEN_RESI 1 1 SEN_RESI
24 TFT_SCL
LCD_RS 24
S0V 23 23 S0V
LCD_CS 22 22 TFT_CS
CN23 INK ABSORBER
Ink Absorber Full FORM FULL 21 S0V
S0V 21
sensor PCB
2 2 FORM_CNT_N
LCD_RESET 20 20 LCD_RESET
1 1 FORM_CNT_P
S0V 19 19 S0V
+3.3V 18 18 +3.3V
CN5 FRONT(INK)
FMARK 17 17 TFT_SDA
Ink Cartridge Cover COVER
2 F_COVER 16 S0V
Sensor S0V 16
1 S0V
D10 15 15 D10
S0V 14 14 S0V
CN19 CIS (FB)
First side CIS Unit D11 13 13 D11
Red_LED 16 16 Red_LED S0V 12 12 S0V
Green_LED 15 15 Green_LED 11 D12
D12 11
Blue_LED 14 14 Blue_LED
S0V 10 10 S0V
+5V 13 13 +5V D13 9 9 D13
CIS_CLK 12 12 CIS_CLK 8 S0V
S0V 8
CIS_TG 11 11 CIS_TG D14 7 7 D14
CIS_Vref 10 10 CIS_Vref S0V 6 6 S0V
R3.3V 9 9 R3.3V
D15 5 5 D15
R0V 8 8 R0V S0V 4 4 S0V
CIS_MODE 7 7 CIS_MODE 3 D16
D16 3
R0V 6 6 R0V/Aout0(1200/1ch) S0V 2 2 S0V
Aout0 5 5 Aout0 D17 1 1 D17
R0V 4 4 R0V
Aout1 3 3 Aout1
R0V 2 2 R0V
Aout2 1 1 Aout2
CN20 CIS
Second side CIS Unit
(ADF, FB:1200/3ch)
Red_LED_BS 16 16 Red_LED_BS
Green_LED_BS 15 15 Green_LED_BS
Blue_LED_BS 14 14 Blue_LED_BS
+5V 13 13 +5V 3.7inch LCD Model
CIS_CLK2 12 12 CIS_CLK2 CN1 PANEL CN3 LCD PCB
+31V(LED_A) 50 50 +31V(LED_A)
LINE R0V 11 11 R0V
Ta 2
CIS_TG_BS 10 10 CIS_TG_BS S0V 49 49 S0V
La 3
R0V 9 9 R0V LED_PWM(LED_C) 48 48 LED_PWM(LED_C)
Lb 4 TOUCH_AD0 47 47 TOUCH_AD0
CIS_Vref 8 8 CIS_Vref
Tb 5
R3.3V 7 7 R3.3V TOUCH_OUT1 46 46 TOUCH_OUT1
FG(NC) 7
TOUCH_AD1 45 45 TOUCH_AD1
R0V 6 6 R0V
FG(NC) 8 TOUCH_OUT3 44 44 TOUCH_OUT3
Aout0_BS 5 5 Aout0_BS
R0V 4 4 R0V TOUCH_OUT2 43 43 TOUCH_OUT2
EXT
Ta 2
TOUCH_OUT0 42 42 TOUCH_OUT0
Aout1_BS 3 3 Aout1_BS
Tb 3 NFC_LED 41 41 NFC_LED
R0V 2 2 R0V
FG(NC) 7
ONOFF_KEY 40 40 ONOFF_KEY
Aout2_BS 1 1 Aout2_BS
FG(NC) 8 REG_PU 39 39 REG_PU
HOST_WAKE 38 38 HOST_WAKE
S0V 37 37 S0V
I2C_SCL 36 36 I2C_SCL
TOUCH_CAL1 35 35 TOUCH_CAL1
I2C_SDA 34 34 I2C_SDA
NFC_WAKE 33 33 NFC_WAKE
3.3V(NFC) 32 32 3.3V(NFC)
PF Encoder Sensor
CN8 PF ENCODER +5V(LED_POWER) 31 31 +5V(LED_POWER)
PF_ENC2 4 4 PF_ENC2 INTERRUPT 30 30 INTERRUPT
SLP3.3 3 3 SLP3.3 S0V 29 29 S0V
S0V 2 2 S0V S0V 28 28 S0V
PF_ENC1 1 1 PF_ENC1 TOUCH_CAL0 27 27 TOUCH_CAL0
LCD_WR 26 26 LCD_WR
CN9 SB Switch Back Sensor
S0V 25 25 S0V
SEN3.3 3 3 SEN3.3
LCD_RS 24 24 LCD_RS
S0V 2 2 S0V
S0V 23 23 S0V
SEN_SB 1 1 SEN_SB
LCD_CS 22 22 LCD_CS
S0V 21 21 S0V
Document Detection
CN2 FSEN Sensor PCB
LCD_RESET 20 20 LCD_RESET
SEN3.3 3 3 SEN3.3
S0V 19 19 S0V
S0V 2 2 S0V
+3.3V 18 18 +3.3V
FSEN 1 1 FSEN
FMARK 17 17 FMARK
First Side S0V 16 16 S0V
CN1 RSEN
Document Scanning
D10 15 15 D10
SEN3.3 3 Position Sensor PCB
S0V 14 14 S0V
3 SEN3.3
S0V 2
2 S0V D11 13 13 D11
RSEN 1
1 RSEN
S0V 12 12 S0V
CN3 PC_HABA/REAR_B D12 11 11 D12
Second Side Document
SEN3.3 3 Scanning Position Sensor S0V 10 10 S0V
PCB
S0V 2 D13 9 9 D13
3 SEN3.3
2 S0V
PC_HABA/REAR_B 1
S0V 8 8 S0V
1 PC_HABA
CN7 MP D14 7 7 D14
MP Paper Detection Sensor
SEN3.3 3 S0V 6 6 S0V
3 SEN3.3
S0V 2 2 S0V
D15 5 5 D15
SEN_MP 1 1 SEN_MP
S0V 4 4 S0V
CN6 ADF COVER D16 3 3 D16
ADF Cover Sensor
ADF_COVER 1 1 ADF_COVER
S0V 2 2 S0V
S0V 2 2 S0V
D17 1 1 D17
CN4 LT TRAY
Lower Tray Sensor
SEN_TRAY 1 1 SEN_TRAY
S0V 2 2 S0V
6-7
CN3
LCD
VCOM 41 41 VCOM
VLED- 40 40 VLED-
VLED+ 39 39 VLED+
VCAC 38 38 VCAC
COMDC 37 37 COMDC
FRP 36 36 FRP
AGND 35 35 AGND
VGL 34 34 VGL
VGH 33 33 VGH
D8 32 32 D8
D7 31 31 D7
VDD5 30 30 VDD5
VDD3 29 29 VDD3
V6 28 28 V6
V5 27 27 V5
VDD2 26 26 VDD2
V4 25 25 V4
V3 24 24 V3
V2 23 23 V2
V1 22 22 V1
DVDD 21 21 DVDD
VDDIO 20 20 VDDIO
VDD 19 19 VDD
VDD 18 18 VDD
GND 17 17 GND
D0 16 16 D0
D1 15 15 D1
D2 14 14 D2
D3 13 13 D3
D4 12 12 D4
D5 11 11 D5
D6 10 10 D6
D7 9 9 D7
DCLK 8 8 DCLK
VSYNC 7 7 VSYNC
HSYNC 6 6 HSYNC
SCL 5 5 SCL
SDA 4 4 SDA
CS 3 3 CS
GRB 2 2 GRB
VCOM 1 1 VCOM
CN1
Touch Panel
X-( ) 4 4 X-
Y-( ) 3 3 Y-
X+( ) 2 2 X+
Y+( ) 1 1 Y+
CN5
Panel PCB
6 6
+5V +5V
INTERRUPT 5 5 INTERRUPT
+3.3V 4 4 +3.3V
I2C_SCL 3 3 I2C_SCL
I2C_SDA 2 2 I2C_SDA
GND 1 1 GND
CN2
Power switch PCB
S0V 2 4 S0V
ONOFF_KEY 1 3 ONOFF_KEY
S0V 2 2 S0V
S0V 1 1 S0V
CN2 LCD
LED- 21 21 LED-
LED+ 20 20 LED+
RD 19 19 RD
WR 18 18 WR
GND 17 17 GND
RS 16 16 RS
CS 15 15 CS
RESET 14 14 RESET
GND 13 13 GND
VCC 12 12 VCC
IOVCC 11 11 IOVCC
FMARK 10 10 FMARK
GND 9 9 GND
D10 8 8 D10
D11 7 7 D11
D12 6 6 D12
D13 5 5 D13
D14 4 4 D14
D15 3 3 D15
D16 2 2 D16
D17 1 1 D17
CN6 Touch Panel
Y+( ) 4 4 Y+
X-( ) 3 3 X-
Y-( ) 2 2 Y-
X+( ) 1 1 X+
Panel PCB
CN1
+5V 6 6 +5V
INTERRUPT 5 5 INTERRUPT
+3.3V 4 4 +3.3V
ISC_SCL 3 3 ISC_SCL
I2C_SDA 2 2 INTERRUPT
GND 1 1 GND
Power Switch PCB
CN5
NFC_LED NFC_LED
4 4
3 3 S0V
S0V
ONOFF_KEY 2 2 ONOFF_KEY
1 1 +5V
+5V
CN4 NFC PCB
VDDIO 8 8 VDDIO
nfc_wake 7 7 nfc_wake
SDA 6 6 SDA
GND 5 5 GND
SCL 4 4 SCL
GND 3 3 GND
host_wake 2 2 host_wake
REG_PU 1 1 REG_PU
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