Brother DCP-L8400CDN Service Manual page 457

CHAPTER 6 WIRING DIAGRAM
1. WIRING DIAGRAM
PROCESS MOTOR
MAIN MOTOR
T1 SOLENOID
MP SECTOR
SOLENOID
REGISTRATION
SOLENOID
DEVELOP
RELEASE
CLUTCH
SWITCHBACK
SOLENOID
DEVELOP
CLUTCH
DX
CLUTCH
WIRELESS
LAN PCB
USB HOST RELAY
PCB ASSY
CN1
USB HOST
POLYGON
MOTOR
INTERNAL
THERMISTOR
BACK COVER
SENSOR ASSY
REGISTRATION MARK
SENSOR R PCB
REGISTRATION MARK
SENSOR L PCB
DEVELOP RELEASE
SENSOR PCB ASSY
REGISTRATION
FRONT/REAR
SENSOR PCB ASSY
PAPER DETECT
SENSOR PCB ASSY
MP PAPER EMPTY/
REGISTRATION FRONT
SENSOR PCB ASSY
TONER/NEW
SENSOR PCB ASSY
PHASE SENSOR
PCB ASSY
DOCUMENT SCANNER UNIT
FIRST SIDE
CIS UNIT
DOCUMENT
SCANNER
MOTOR
MODEM PCB ASSY
CN31 22 HU+ CN27 POWER
MAIN PCB ASSY
21 HU- RESPONCE 1
20 HV+
+3.3V 2
19 HV-
COMMAND 3
18 HW+
SGND 4
17 HW-
PNL_RSTN 5
16 GND
ONOFF_KEY 6
15 VCC5
SPKR_ON_N 7
14 U
SPKR_WAV 8
13 U
+24V 9
12 U
11 U
CN20 USB
10 V
+5V 1
9 V
DATA+ 2
8 V
DATA- 3
7 V
GND 4
6 W
FG 5
5 W
4 W
3 W
2 FG+
1 FG-
CN45 19 HU+
18 HU-
17 HV-
16 HV+
15 HW+
14 HW-
13 GND
12 VCC5
11 U
10 U
9 U
8 V
7 V
6 V
5 W
4 W
3 W
2 FG+
1 FG- CN7
+5VI 1
GND 2
CN18
1 +24V
VIDEO01_N 3
2 T1_SOL
VIDEO01_P 4
GND 5
CN17
1 +24V
VIDEO02_N 6
2 MP_SOL
VIDEO02_P 7
GND 8
CN19
1 +24V VIDEO04_N 9
VIDEO04_P 10
2 REG_SOL
GND 11
VIDEO03_N 12
CN2
1 +24V VIDEO03_P 13
2 DEV_CLU GND 14
E2P_SDA 15
ENABLE 16
CN5
1 +24V
E2P_SCL 17
2 REG_SOL
+5V 18
BD4_N 19
CN16
BD1_N 20
1 +24V
+3.3V 21
2 K_CLU
LDHALF1_PWM 22
LDHALF2_PWM 23
CN26
LDHALF04_OPWM 24
1 +24V
LDHALF03_PWM 25
2 DX_CLU
CN42
CN9 1 +3.3V
THM_FUSER_E 1
THM_E_VCC 2
2 DATA+
EJECT_F_SEN 3
3 DATA-
4 GND GND 4
LED_VCC 5
5 FG
THM_FUSER_C1 6
CN11 1 FG
THM_C_VCC 7
2 +5V CN40
3 DATA+ PGND 1
4 DATA- +24V 2
5 GND +24V 3
6 FG +24V 4
PGND 5
CN8
1 +24V
PGND 6
2 +24VRET
+5V 7
3 ON/OFF
PLY_PWR_OFFN 8
4 LOCK
RLY RET_OFFN 9
5 CLK
DSLEEP_N 10
HEATON 11
LVPS_OFF_PLS_N 12
ZEROXN_LVPS 13
CN46 1 THM_BOX
GND 1
2 +3V
+6.5V 2
GND 3
CN3 1 REAR_COV_SEN
24V 4
2 GND
GND 5
HV_STATUS 6
CN43
1 +5V
CN1 DIMM
HV_COMMAND 7
2 GND
HV_SRTN 8
3 RIGHT_LED_VCC
HV_TRG 9
4 RMAEK_SEN_R
CN44 1 +5V
2 GND
3 LEFT_LED VCC CN48 USB
4 DENS_SEN1/RMARK_SEN_L
5 DENS_SEN2
CN10
1 LED_VCC
CN25 LAN
2 SGND
3 DEVREL_SEN
CN15
1 T1_REG_F_SEN CN12
+5V 1
2 VCC
FRONT_COVER_SEN 2
3 SGND
4 REGR_SEN
CN13
1 SGND
CN37
2 LED_VCC
VOUT5 1
3 T1_PEDG_SEN
AGND 2
VOUT4 3
CN14
1 MP_PE_SEN
AGND 4
2 MP_REG_F_SEN
VOUT3 5
3 SGND
AGND 6
4 LED_VCC
VOUT2 7
AGND 8
CN21
VOUT1 9
1 SGND
2 PNEW_K_SEN AGND 10
3 TE_K_SEN VOUT0 11
AGND 12
4 TE_Y_SEN
MODE 13
5 TE_M_SEN
6 TE_C_SEN AGND 14
VCC 15
7 PNEW_C_SEN
VCC 16
8 LED_VCC
9 PNEW_M_SEN VREF 17
10 PNEW_Y_SEN SP 18
AGND 19
CLK 20
CN22 1 GEAR_SEN
LED_Anode 21
2 LED_VCC
B_LEB 22
3 SGND
G_LED 23
R_LED 24
CN39
SEN_ADFRB 1
CN38
1 VOUT5
GND 2
2 AGND
VDD_LED 3
3 VOUT4
4 AGND CN41
VDD_LED 1
5 VOUT3
SEN_FRONT 2
6 AGND
SEN_ADFCOVER 3
7 VOUT2
GND 4
8 AGND
VDD_LED 5
9 VOUT1
SEN_REAR 6
10 AGND
GND 7
11 VOUT0
CN5
12 AGND
LVPS_FAN_VCC 1
13 MODE PGND 2
14 AGND
LVPS_FAN_VCC 1
15 VCC
PGND 2
16 VCC
17 VREF
18 SP
CN4
19 AGND VOUT2 1
VOUT1 2
20 CLK
21 LED_Anode
22 B_LED
23 G_LED
24 R_LED
CN30
VCC24LPS 1
CN32
1 A 24RET 2
2 A LT1_LPT_DRV 3
3 B LT1_SOL 4
4 B LT1_LIFT_SEN 5
LT1_REG_SEN 6
CN28
1 +24V
2 PGND
3 SPI_DIN
4 +3.3V
5 SPI_DOUT
6 SGND
7 SPI_CLK
8 SGND
9 INT_N
10 RST_N
11 CI
12 CS_N
13 MONITOR
14 TELOFF
15 CONNECT/GIJI
PANEL UNIT
CN1
PANEL CONTROL LED- 1
LED+ 2
PCB ASSY
RD 3
WR 4
GND 5
RS 6
CS 7
RESET 8
GND 9
VDD 10
IOVCC 11
FMARK 12
GND 13
D10 14
D11 15
D12 16
D13 17
D14 18
D15 19
D16 20
D17 21
FG 22
FG 23
CN2
NFC PCB
VCC 1
CN4
ASSY
NFC_WAKE 2
5V 1
SDA 3 I2C_DATA 2
GND 4 SGND 3
SCL 5 I2C_CLK 4
GND 6 3.3V 5
HOST_WAKE 7
SD_INT_N 6
REG_PU 8
ON_OFFKEY 7
Y+(BOTTOM) 8
X-(RIGHT) 9
Y-(TOP) 10
X+(LEFT) 11
24V 12
FG 13
CN6 LD1
LD PCB ASSY GND 1
LD 2
PD 3
+5V 4
CN2 LD3
GND 1
LD 2
PD 3
+5V 4
CN3
+3.3V 1
GND 2
BD_n 3
CN5
+3.3V 1
GND 2
BD_n 3
CN1
EJECT FRONT SENSOR
+3.3V 1
PCB ASSY
THM_C 2
CN2
THM_E 1
+3.3V 2
CN2
LIVE 1
NEUTRAL 4
CN1
LIVE 1
NEUTRAL 3
PS PCB ASSY
AC INLET
CN6
CN7
CN2
WST_TNR_LED_VCC 1
PGND 2
WST_TN_LED_SEN 3
CN6
AIR_FAN_LOCK 1
PGND 2
CN1
AIR_FAN_VCC 3
CN4
FUSER_FAN_VCC 1
PGND 2
FUSER_FAN_LOCK 3
CN5
LVPS_FAN_VCC 1
PGND 2
HIGH-VOLTAGE POWER
SUPPLY PCB ASSY
FRONT COVER
SENSOR
ADF UNIT
SECOND SIDE CIS UNIT
FIRST SIDE DOCUMENT
SCANNING POSITION SENSOR PCB
ADF COVER/
DOCUMENT DETECTION
SENSOR PCB
SECOND SIDE DOCUMENT
SCANNING POSITION SENSOR PCB
ADF
MOTOR
SPEAKER
CN6
1 REGIST
+24V-LPS 1
2 NC PLATEn 2
3 PLATE-SEN
LT DRAWER LT DRAWER
4 NC
+24V-LPS 1
CONNECTOR CONNECTOR 5 SOL
SOLn 2
6 PLATE
7 PGND
GND 1
8 +24V-LPS
PLATE-SEN 2
+3.3V 3
NC 4
T2 RELAY
VCC 1
PCB ASSY
GND 2
LT
REGIST 3
6-1
LCD
KEY PCB ASSY CN1 TOUCH PANEL
X+ 1
Y- 2
X- 3
Y+ 4
LD SUB PCB ASSY
LD SUB PCB ASSY
BD SENSOR PCB ASSY
BD SENSOR PCB ASSY
FUSER UNIT
CENTER THERMISTOR
SIDE THERMISTOR
HALOGEN HEATER
AC CORD
WASTE TONER SENSOR
BLOWER
FUSER
FAN
POWER
FAN
CN5
T2 PLATE
MOTOR
CN2
T2 SOLENOID
CN3
T2 PAPER FEED/PLATE
ORIGIN SENSOR PCB
CN4
T2 REGISTRATION
SENSOR PCB
Confidential