Brother HL-4000CN Service Manual page 303

A B
2.1.2 Monitoring
MCU AND HVPS PWB
1 PL15.1
2.1.1
1 INTERLOCK OPEN
SIGNAL
2
3
4
1
Imaginary Line
5
6
C D
CONTROL PANEL
PL1.1
CONTROL
LOGIC
Close Front Cover
VI-6
E F G
2.1 Standby Power
H J