Brother HL-4000CN Service Manual page 325

A B
2.8.4 Toner dispense control
MCU AND HVPS PWB
1 PL15.1
DRIVE PWB
PL15.1
CONTROL
LOGIC J11 CLOCK A J41
25 16
YEL YEL
DC COM
CLOCK B
26 15
YEL YEL
DC COM
CLOCK XA
27 14
YEL YEL
2 DC COM
CLOCK XB
28 13
YEL YEL
DC COM
+24VDC
SWITCHED
(CH1.1)
CLOCK A
3
12
29
YEL YEL
DC COM
CLOCK B
11
30
YEL YEL
DC COM
CLOCK XA
10
31
YEL YEL
DC COM
CLOCK XB
9
32
YEL YEL
DC COM
4
+24VDC
SWITCHED
(CH1.1)
CLOCK A
33 8
YEL YEL
DC COM
CLOCK B
34 7
5
YEL YEL
DC COM
CLOCK XA
35 6
YEL YEL
DC COM
CLOCK XB
36 5
YEL YEL
DC COM
+24VDC
6
SWITCHED
(CH1.1)
C D E
TONER MOTOR
ASSY(Y)
DO-18
PL12.2
J51
CLOCK A J511 4
2
GRY GRY
CLOCK B
3 3
GRY GRY
CLOCK XA
MOT
4 2
GRY GRY
CLOCK XB
5 1
GRY GRY
1 1
YEL YEL
TONER MOTOR
ASSY(M)
DO-1a
PL12.2
CLOCK A J512 4
7
TONER DISPENSE CONTROL
GRY GRY
CLOCK B
8 3
GRY GRY
CLOCK XA
9 2 MOT
GRY GRY
CLOCK XB
10 1
GRY GRY
6 1
VIO VIO
TONER MOTOR
ASSY(C)
DO-1c
PL12.2
CLOCK A J513
20
4
GRY GRY
CLOCK B
21
3
GRY GRY
CLOCK XA
MOT
22
2
GRY GRY
CLOCK XB
23
1
GRY GRY
19
1
BLU BLU
VI-28
F G
MCU AND HVPS PWB
PL15.1
DRIVE PWB
PL15.1
CONTROL
LOGIC CLOCK A
J11 J41 J51 CLOCK A
37 4 25
YEL YEL GRY
DC COM
CLOCK B CLOCK B
38 3 26
YEL YEL GRY
DC COM
CLOCK XA CLOCK XA
39 2 27
YEL YEL GRY
DC COM
CLOCK XB CLOCK XB
40 1 28
YEL YEL GRY
DC COM
24
GRY
+24VDC
SWITCHED
(CH1.1)
2.8 XEROGRAPHICS
H J
TONER MOTOR
ASSY(K)
DO-1e
PL12.2
J514
4
GRY
3
GRY
MOT
2
GRY
1
GRY
1
GRY
2.8.2
DESPENSED
TONER(Y)
2.8.2
DESPENSED
TONER(M)
2.8.2
DESPENSED
TONER(C)
DESPENSED 2.8.2
TONER(K)