Toshiba E-STUDIO520 - Fuser Control Circuit; Configuration

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