Fuser Control Circuit; Configuration - Toshiba e-STUDIO520 Service Manual

14.4 Fuser Control Circuit

14.4.1

Configuration

Side thermostat
Front thermistor
LGC board
Main CPU
+5.1VC
Temperature
control circuit
March 2005 © TOSHIBA TEC
Center thermostat
Center
thermistor
IH coil
Pressure roller thermistor
+5VSW
Power supply for photocoupler
Switching signal of power setting
ASIC IH status signal
IH coil energization permitting signal
Duty ratio changing signal
Fig.14-2
14 - 5
Rear thermistor
Fuser roller
Pressure roller
IH board
Coil output N
IH power source / drive circuit
Photocoupler
Control circuit
including CPU
AC line
DC line
e-STUDIO520/600/720/850 FUSER UNIT
Power cable
Noise
filter
Breaker
L AC input
Fuse
14