Brother HL-4000CN Service Manual page 306

A B
2.3.2 CRUM and billing
MCU AND HVPS PWB
1
PL15.1
CONTROL
LOGIC
DI-32
J140 CRUM DATA
2
YEL
CRUM CLOCK
2
3
YEL
4
YEL
+3.3VDC
(CH1.1)
5
YEL
DC COM
(CH1.1)
3
6
YEL
+5VDC
(CH1.1)
CONTROL
LOGIC EEPROM DATA
7
YEL
4
EEPROM CLOCK
8
YEL
9
YEL
+3.3VDC
(CH1.1)
10
YEL
5
DC COM
(CH1.1)
6
C D
BRACKET CONN ASSY Print head
DOUBLE CRUM CRUM MC cartridge ASSY
PLUG PL12.3 PL12.3
PL11.1
P71 5 J71 J710 5
2
YEL YEL YEL
4 3 4
YEL YEL YEL
3 4 3
YEL YEL YEL
2 5 2
YEL YEL YEL
1 6 1
YEL YEL YEL
EEPROM PWB
PL12.1
J144 4
YEL
3
YEL
2
YEL
1
YEL
VI-9
E F G
CONN ASSY BRACKET
CRUM MC CRUM
PL12.3 PL12.3
DOUBLE
PLUG
J710 J71 1 P71
6 6
YEL YEL YEL
2.3 Machine Run Control
H J
1
2.3.3
CRUM DATA
MCU AND HVPS
PWB
PL15.1
2.5.1
LD +5VDC
J140 1
YEL
1
Imaginary Line