Brother HL-L8250CDN Service Manual page 344

CHAPTER 6 WIRING DIAGRAM
1. WIRING DIAGRAM
CN17
PROCESS MOTOR
CN27
MAIN MOTOR
T1 SOLENOID
MP 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
CN39
INTERNAL
THERMISTOR
CN33
BACK COVER
SENSOR ASSY
CN37
REGISTRATION MARK
SENSOR R PCB
CN38
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
PAPER EJECT
ORIGIN SENSOR
MODEL WITH TOUCH PANEL
CN18
MAIN PCB ASSY
22 HU+ FG 1
21 HU-
+24V 2
20 HV+
PW_SW 3
19 HV-
PRSTN 4
18 HW+
+3.3V 5
17 HW-
GND 6
16 GND
M_RXD0 7
15 VCC5
M_TXD0 8
14 U
M_TXD1 9
13 U
M_RXD1 10
12 U
GND 11
11 U
+5V 12
10 V
9 V
8 V
7 V
6 W
5 W
4 W
3 W
2 FG+
1 FG-
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-
CN12
1 +24V
2 T1_SOL
CN11
CN23
1 +24V
GND 1
2 MP_SOL
PCLK 2
MAIN_SDOUT 3
MAIN_SDIN 4
CN13
+5V 5
1 +24V
PW_SW 6
2 REG_SOL
CN28
1 +24V
MODEL WITHOUT TOUCH PANEL
2 DEV_CLU
CN1
+5VI 1
CN30 GND 2
1 +24V VIDEO01_N 3
2 REG_SOL
VIDEO01_P 4
GND 5
VIDEO02_N 6
VIDEO02_P 7
CN10
GND 8
1 +24V
VIDEO04_N 9
2 K_CLU
VIDEO04_P 10
GND 11
VIDEO03_N 12
CN16 VIDEO03_P 13
1 +24V
GND 14
2 DX_CLU
E2P_SDA 15
ENABLE 16
E2P_SCL 17
+5V 18
CN6
BD4_N 19
1 +3.3V
BD1_N 20
2 DATA+
+3.3V 21
3 DATA-
LDHALF1_PWM 22
4 GND LDHALF2_PWM 23
5 FG
LDHALF04_OPWM 24
LDHALF03_PWM 25
CN35
1 PC+5V
2 DM
3 DP
4 SGND
CN36
5 FG
CN29 DIMM THM_FUSER_E 1
6 FG
THM_E_VCC 2
EJECT_F_SEN 3
GND 4
CN2
LED_VCC 5
1 +24V
THM_FUSER_C1 6
2 +24VRET
THM_C_VCC 7
3 ON/OFF
4 LOCK
5 CLK
CN31
GND 1
+6.5V 2
GND 3
24V 4
SGND 5
HV_STATUS 6
HV_COMMAND 7
1 THM_BOX
HV_SRTN 8
2 +3V
HV_TRG 9
1 REAR_COV_SEN
2 SGND
CN35 USB
1 +5V
2 GND
3 RIGHT_LED_VCC
4 RMAEK_SEN_R
CN34 LAN
1 +5V
2 GND
3 LEFT_LED VCC
4 DENS_SEN1/RMARK_SEN_L
5 DENS_SEN2
CN3
1 LED_VCC
2 SGND
3 DEVREL_SEN
CN32
CN9
PGND 1
1 T1_REG_F_SEN
+24V 2
2 VCC
+24V 3
3 SGND
+24V 4
4 REGR_SEN
PGND 5
PGND 6
+5V 7
CN7
PLY_PWR_OFFN 8
1 SGND
RLY RET_OFFN 9
2 LED_VCC
DSLEEP_N 10
3 T1_PEDG_SEN
HEATON 11
LVPS_OFF_PLS_N 12
ZEROXN_LVPS 13
CN8
CN4
1 MP_PE_SEN
+5V 1
2 MP_REG_F_SEN
FRONT_COVER_SEN 2
3 SGND
4 LED_VCC
CN14
1 SGND
2 PNEW_K_SEN
CN21
3 TE_K_SEN
VCC24LPS 1
4 TE_Y_SEN
24RET 2
5 TE_M_SEN
LT1_LPT_DRV 3
6 TE_C_SEN
LT1_SOL 4
7 PNEW_C_SEN
LT1_LIFT_SEN 5
8 LED_VCC
LT1_REG_SEN 6
9 PNEW_M_SEN
10 PNEW_Y_SEN
CN41
1 SW_ARM_SEN
2 SGND
CN2 PANEL RELAY PCB ASSY
PANEL CONTROL
TOUCH_AD1 1
PCB ASSY
TOUCH_AD0 2
GND 3
CAL1 4
CAL0 5
TOUCH_OUT3 6
TOUCH_OUT2 7
TOUCH_OUT1 8
TOUCH_OUT0 9
GND 10
+5V 11
INTERRUPT 12
I2C_SCL 13
I2C_SDA 14
ONOFF_KEY 15
+3.3V 16
GND 17
FMARK 18
RESET 19
RD 20
WR 21
CS 22
RS 23
GND 24
D10 25
D11 26
D12 27
D13 28
D14 29
D15 30
D16 31
D17 32
LED- 33
+31V 34
FG 35
FG 36
CN1
ON/OFF 1
KEY PCB ASSY
+5V 2
INT 3
FG 4
SDA 5
GND 6
SCL 7
+3.3V 8
CN2
PANEL PCB ASSY
DATA 1
LCD
SCK 2
STB 3
VREF 4
VSS 5
VDD 6
FG 7
FG 8
CN6 LD1
GND 1
LD 2
LD SUB PCB ASSY
PD 3
+5V 4
CN2 LD3
GND 1
LD 2
LD SUB PCB ASSY
PD 3
+5V 4
CN3
+3.3V 1
GND 2 BD SENSOR PCB ASSY
BD_n 3
CN5
+3.3V 1
LD PCB ASSY
GND 2
BD SENSOR PCB ASSY
BD_n 3
CN1
EJECT FRONT SENSOR
+3.3V 1
PCB ASSY
THM_C 2 CENTER THERMISTOR
CN2
THM_E 1
+3.3V 2 SIDE THERMISTOR
CN2
CN7
4 SGND
WST_TNR_LED_VCC 1
3 6.5V
PGND 2 WASTE TONER SENSOR
2 PGND
WST_TN_LED_SEN 3
1 24V
CN1
5 SGND
4 HV_STATUS
3 HV_COMMAND
2 HV_SRTN
CN6
1 HV_TRG AIR_FAN_LOCK 1
PGND 2
BLOWER
AIR_FAN_VCC 3
CN4
FUSER_FAN_VCC 1
PGND 2
FUSER FAN
FUSER_FAN_LOCK 3
CN5
LVPS_FAN_VCC 1
POWER
PGND 2
FAN
HIGH-VOLTAGE POWER
SUPPLY PCB ASSY
CN2
LIVE 1
HEATER
NEUTRAL 4
CN1
LIVE 1
NEUTRAL 3
LOW-VOLTAGE POWER
SUPPLY PCB UNIT AC INLET
FRONT COVER SENSOR
CN6 CN5
1 REGIST +24V-LPS 1
2 NC PLATEn 2
3 PLATE-SEN
LT DRAWER LT DRAWER
4 NC
CONNECTOR CONNECTOR 5 SOL
6 PLATE CN2
7 PGND +24V-LPS 1
8 +24V-LPS SOLn 2
CN3
GND 1
PLATE-SEN 2
+3.3V 3
NC 4
T2 RELAY
PCB ASSY
CN4
VCC 1
GND 2
LT
REGIST 3
6-1
CN1
LCD
LED+ 1
LED- 2
RD 3
WR 4
GND 5
DC 6
CS 7
RESET 8
GND 9
VDD 10
VDDI 11
TE 12
GND 13
DO0 14
DO1 15
DO2 16
DO3 17
DO4 18
DO5 19
DO6 20
DO7 21
FG 22
FG 23
CN3
Y- 1
TOUCH PANEL
X- 2
Y+ 3
X+ 4
FG 5
FG 6
AC CORD
T2 PLATE
MOTOR
T2 SOLENOID
T2 PAPER FEED/PLATE
ORIGIN SENSOR PCB
T2 REGISTRATION
SENSOR PCB
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