Brother MFC-9420CN Service Manual page 60

Control
Panel
Host Computer
I/F
Video
Controller
Control
Paper Sensor (F.CL)
Fusing Unit
Main Cooling Cooling
Motor 2 Fan Laser Fan (EX) 2
MCTL (Engine Controller)
Sequence Control
Temperature Control
Toner Empty Sensing Control
Control Panel Control
Error Processing Program
High Voltage Unit
DC Power
Supply Unit
Interlock Switches
Fig. 3-28
3 - 2 6
DM
ATC (4 pcs.)
Belt
Drum
Sensor Sensor
Y
CPU
Paper Sensor (P.EN)
Paper Sensor (PT1)
Paper Size Sensor (PSU)
Paper Sensor (EXF)
OHP Sensor 3 (OHP)
Belt Sensor (DPJ)
Paper Sensor (F.CL)
Toner Key Sensor 2 (TNK)
Temperature Sensor for Fusing Unit
Scanner
Motor
LDU
PDU
M C K
Laser Control
Paper Sensor (D.EN)
Belt Sensor (PBS)
Paper Sensor (PT2)
Waste Toner Sensor (WTS)
Toner Sensor ASSY
Developer Position Sensor
Paper Full Sensor
Confidential