Toshiba e-STUDIO353 - Heater Control Circuit; Configuration

13 - 4
13
e-STUDIO350/352/353/450/452/453
FUSER UNIT / PAPER EXIT SECTION
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13.4 Heater Control Circuit
13.4.1 Conguration
Fig. 13-401
N
L
CPU
Temperature
control circuit
Upper limit
circuit
LGC
IH
5V SW
5V SW
Main thermistor
Coil Fuser roller
Coil output
Fuse
AC
input
Thermostat
Noise
filter
Breaker
Power code
Edge thermistor
IH power source/
drive circuit
Control circuit
including CPU
Photocoupler
AC line DC line
Power supply for Photocoupler Electric power setting Error signal IH1 ON signal IH2 ON signal
[
Block diagram of fuser unit and IH control circuit
]