Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual page 318

Engine PCB Circuit Diagram (4/5)
1 2
OPC Drum Motor1/2
+5V
R60
A
16k U3
21
1%(F)
CR VCC
C41
TP234
C332
LG
SGND
(3216)
C33 50VDC
C224
10%(B) 15
SGND cpA
16
TP235
cpB VmmA
C36
17
50VDC C103 TP236
cpC VmmB
10%(B)
TP237
14
STB PG25
20
DEC PG26
TP238
1
opc1_in0 I0A RsA
2-2C
24
TP239
opc1_in1 I1A
2-2C
12
TP240
opc1_in2 I0B RsB
2-2C 13
TP241
opc1_in3 I1B
2-2C
TP242
B
2
opc1_pha PHAA
2-2C
11
TP243
opc1_phb PHAB OUTA
2-2C
TP244
OUTA
OUTB
23
VrA OUTB
22
VrB
sen_led_on1
1-1B/1E/5-1A MTD2035G
R36
4.7k
+24V
SGND +5V
R69
TP221 TP232
3.9k 1%(F) R47
opc_vref_pwm 16k U1
2-2D
1%(F) 21
CR VCC
C42
C26
R67
TP245
10k
C104 C332
1%(F)
10%(B) LG
SGND
C (3216)
SGND C16 50VDC C224
15
10%(B)
SGND cpA
16
TP246
cpB VmmA
C18
17
50VDC C103 TP247
cpC VmmB
10%(B)
TP248
14
STB PG25
20
DEC PG26
TP249
1
opc2_in0 I0A RsA
2-2D
24
TP250 TP346
opc2_in1 I1A
2-2D
12
TP251
opc2_in2 I0B RsB
2-2D
13
TP252 TP347
opc2_in3 I1B
2-2D
TP253
2
opc2_pha PHAA
2-2C
11
TP254
opc2_phb PHAB OUTA
2-2C
TP255
OUTA
OUTB
23
D
VrA OUTB
22
VrB
MTD2035G
C21 C102
U2
Development Release Motor SGND
21 11
R44 CR1 VM0
39k
16 3
TP230
CR2 VM1
C25 C102
10
TP231
SGND VM2
R49 39k
20 2
sen_led_on1 PS PGND
1-1B/1B/5-1A
24 18
devrel_in0 I01 VCC
2-2D
23
TP225
devrel_in1 I11
2-2D
13 19
TP226
E devrel_in2 I02 GND
2-2D
14
TP227
devrel_in3 I12
2-2D
1 17
TP228
PHA1 VREG
12
TP256
PHA2
devrel_pha
2-2D 5
TP223 RNF1
devrel_phb
2-2D
TP257
TP224
25 8
PGND PADDLE RNF2
TP258
4
OUT1A
22 6
R40
VREF1 OUT1B
12k 1%(F)
9
devrel_vref_pwm OUT2A
2-2D
15 7
TP222 TP229
R42 VREF2 OUT2B
8.2k
C19
1%(F)
BD6775EFV-E2
C104
10%(B)
(note)
SGND IOUT(100%)=VREF(V)/5 x 1/RNF(
F
IN0/IN2 IN1/IN3 OUT
L L 100[%]
H L 67[%]
L H 33[%]
H H 0[%]
1 2
3 4
Development Drive Motor +3.3V
DEV MTR
CN22
R286
4.7k
R285 100
1
dev_lock LD
2-1B
C212
TP260
C102
C210
C101
SGND
R287 330 (for ESD)
2
dev_clk CLK
18 2-2B
+5V TP20
C37
C104
19
SGND
SGND R298 330
3
dev_dir F/R
2-2C
TP21
C217
C101
3
(for ESD)
SGND
10
Q29
4
C45 P/S
4.7k C
C519
C104
dev_on C101
2-2B B
50V(1608)
TP263 (for EMI)
E
47k SGND
PGND DTC143ZE
SGND 5
(1608) +24VRET
PGND
6 +24VRET
5 R61 [1.0mm]
7
0.22 1/2W +24V
TP348
2mm:2A
PGND +24V
8
8 R55 +24V
9
motor_model detect
0.22
1/2W 1-4E/4C/4E C178
TP349
B9B-PH-K-S(LF)(SN)
C102
(for ESD)
OPC1 MTR
CN15 SGND
4
[1.0mm] 1
A
Paper feeding/Belt cleaner Motor
6
[1.0mm] 2
A +3.3V
9
[1.0mm] 3
B +3.3V CLN MTR
7
[1.0mm] 4 R107 CN16
B C513
4.7k
C103
R110 100
1
B4B-PH-K-S(LF)(SN) cln_lock LD
2-1B
TP264 C73
C102
F5 SGND
C60
SGND C101
C52 R97 330 (for ESD)
2
0 TP368 cln_clk CLK
EEE1VA101UP 2-2B
(1608)
TP311
C100
PGND SGND
330
R85
3
cln_dir F/R
18 2-2B
+5V TP342 C56
C20 C101
(for ESD)
C104
19
SGND
SGND
Q16
4
P/S
C C515
4.7k
cln_on C101
B
2-2B
(for EMI)
TP267
3 E
47k SGND
SGND
10 DTC143ZE
5
(1608) PGND
C28
PGND
6
C104 PGND
50VDC
R76
50V(1608) C103 C49
SGND PGND 7
(1608) +24V
0
+24V
2mm:2A
8 +24V
PGND
9
motor_model detect
1-4E/4B/4E C43
5 R48 C102
[1.0mm]
(for ESD) B9B-PH-K-K(LF)(SN)
0.22 1/2W (BLACK)
PGND
SGND
8 R43
0.22 1/2W
Belt Drive Motor +3.3V
OPC2 MTR
BELT MTR
CN14
CN17
R137
4 4.7k
[1.0mm] 1 TP268
A R139 100
1
belt_lock
6 belt_lock
[1.0mm] 2 2-1B
A C84
9
[1.0mm] 3 C102
B
7
[1.0mm] 4
B SGND C81
C101
R134 330
(for ESD)
2
B4B-PH-K-M(LF)(SN) belt_clk belt_clk
2-2B
(GREEN) TP356
SGND
R133 330
3
belt_dir belt_dir
2-2B
TP357
C80
C101
(for ESD)
+24V SGND
C32 Q17
C27 4
EEE1VA101UP belt_on
4.7k C
C104
C100 C516
belt_on
50V(1608) 2-2B B C101
( 8)
TP271 (for EMI)
E
47k SGND
PGND SGND
DTC143ZE
(1608)
5
PGND 24RET
2mm:2A 6
+24V VCC24V
+5V
7
detect
C23 motor_model
1-4E/4B/4C
C79
C104
C102
(for ESD)
SGND B7B-PH-K-R(LF)(SN)
(RED)
SGND
C24
SGND
C104
R45
0.47 1/2W
PGND
Polygon(Scanner) Motor SCAN MTR
R46 C15
CN43
DEVERL MTR 50VDC
0.47
1/2W CN42 C103
2mm:2A (1608) 1
+24V +24V
[0.7mm] 1
A
[0.7mm]
2 2
A PGND +24VRET
[0.7mm] 3
B Q10 C517 3
ON/OFF
4.7k C
[0.7mm]
4 C101
B scan_on
2-2C B (for EMI)
TP272
E
B4B-PH-K-S(LF)(SN) 47k SGND
SGND
mitsumi (WHITE) DTC143ZE
) M42SP-5N (1608) +3.3V
R33
R34
4.7k
100
4
scan_lock LOCK
2-1C
TP273 C14
C102
C12
C101
SGND
Q8
(for ESD) 5
CLK
4.7k C
scan_clk B5B-PH-K-S(LF)(SN)
2-2C B
TP274
E
47k
DTC143ZE SGND
(1608)
3 4
6-10
5 6
Paper Feed Solenoid
T1 SOL
(TDS-04C) CN12
F4
TF16SN1.25TTD
[0.5mm:500mA] 1
+24V
+24V
(1608)
D4
1SS355
R32 C 2
TP89 TP93 T1_SOL
390
Q7
t1_sol
B
2-2F B2B-PH-K-E(LF)(SN)
E (BLUE)
2SD1781K (RANK:R)
R35
47k
PGND
5V REGULATOR
Cleaner halt Solenoid CLN HLT SOL
CN13
(TDS-06A)
130mA
1 +24V
C509
C102
D5
+6.8V
1SS355 (for ESD)
R39 C PGND 2
TP90 TP94 CLN_HLT_SOL
1k
cln_hlt_sol Q12
B
2-2F B2B-PH-K-S(LF)(SN)
C17
E
EEE1AA101SP
2SD1781K (RANK:R) 10V
C100
( 6.3)
R501 R41
47k PGND
SGND PGND
0
SGND
Regist Solenoid REG SOL
CN2
(TDS-04C)
F1
TF16SN1.25TTD 1
[0.5mm:500mA]
+24V +24V
(1608)
D1
1SS355
2
R2
C REG_SOL
TP276 TP280
390 Q1
reg_sol
2-2F B B2B-PH-K-M(LF)(SN)
E (GREEN)
2SD1781K (RANK:R)
R5
47k
PGND
MP Solenoid MP SOL
CN3
(TDS-04C)
3.3V(Analog 3.3V) REGULATOR
1
[0.5mm:500mA]
+24V
C511
C102
D2
(for ESD)
1SS355
PGND
2
R9 C
TP277 TP281 MP_SOL +5V
390
Q4
mp_sol
B C38
2-2F B2B-PH-K-Y(LF)(SN)
E (YELLOW) C104
2SD1781K (RANK:R)
R7
47k
PGND
SGND
CLN REL SOL
Cleaner Rerease Solenoid
CN1
(TDS-04C)
F3
TF16SN0.70
[0.5mm:500mA] 1
+24V +24V
C512
(1608)
C102
D3
(for ESD)
1SS355
R12 PGND 2
C CLN_REL_SOL
TP92 TP96
cln_rel_sol 390 Q5
2-2F B B2B-PH-K-R(LF)(SN)
E (RED)
2SD1781K (RANK:R)
R13
47k PGND
Density sensor shutter Solenoid
(TDS-06A)
HVPS(TR) power supply
CN24
F8
TF16AT2.00TTD
650mA 1
+24V VCC24
SGND
(1608)
D15
1SS355
R331 C 2
TP91 TP95 DENS_SOL
1k
Q37
dens_sol
B
2-2E
3
24RET
E
2SD1781K (RANK:R)
B3B-PH-K-R(LF)(SN)
(RED)
R336
47k PGND
Duplex Solenoid DX SOL
CN25
(TDS-06A)
1
650mA
+24V
C514
C102
D14
(for ESD)
1SS355
PGND 2
R332
C
TP279 TP283 DX_SOL
1k
Q36
dx_sol
B B2B-PH-K-M(LF)(SN)
2-2F
(GREEN)
E
2SD1781K (RANK:R)
R502
SGND PGND
R334
0
47k PGND
Erase Lamp
+24V
F2
TF16SN0.70
(1608)
R4
22k TP284
R8
TP278 22k Q3
E
B EL
Q6 2SB1197K (RANK:R)
C
4.7k C TP282 CN4
el_on
2-2F B
1
TP275 EL_24V
E
10k
ZD1
DTC143ZE
UDZS36B
(1608)
SGND
PGND 2
GND
B2B-PH-K-K(LF)(SN)
(BLACK)
R3
100
ANALOG
el_current
C3 1-4E
R1 TP202
18 ZD2
02DZ3.0-Z(F)
SGND SGND
PGND
5 6
7 8
A
D6
RB751V-40
Q13
IN OUT +5V
GND MM1665AT TP259
C34
C22
C104 C29 EEE1AA101SP
C104 10V C100
( 6.3)
SGND
B
RB751V-40
D7
U5
5 1
VIN VOUT A3.3V
2 3
VSS NC
4 C
C50
ON/OFF C48
EEE1AA101SP
R504
S-1132B33-U5TU5T1G 10V C100 1k
C104
( 6.3)
SGND
TP366
+24V
R65
10k
1%(F)
+24V
R64 TP365
C40
3.3k
C104
1%(F) ZD6
EDZ6.8B
+5V
SGND TP501 D500
U4
4 2 R58
VSS VDD 15k R57
RB751V-40
3 1 100
D
NC OUT
TP367
S-80842CNNB
R503
2.2k
SGND
E
Stepping motor control
DC Motor control
Solenoid control
EL control
Regulator
F
CODE LM9474-001
NAME CIR B512250 (4/5)
7 8
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