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CF5001 Ver.1.0 Sep. 2003 FIXING UNIT
2-61
II UNIT EXPLANATION
L2 Fixing upper lamp /1 Heating of the fixing roller /U (main)
Halogen heater 750 W
L3 Fixing upper lamp /2 Heating of the fixing roller /U (sub)
Halogen heater 750 W
L4 Fixing lower lamp Heating of the fixing roller /L
Halogen heater 550 W
TH1 Fixing temperature sensor /1 Temperature detection at the center of the fixing roller /U (main)
Non-contact microthermistor
TH2 Fixing temperature sensor /2 Temperature detection at the center of the fixing roller /L (main)
Non-contact microthermistor
TH3 Fixing temperature sensor /3 Temperature detection at the edge (at rear) of the fixing roller /U
(sub)
Contact thermistor
TH4 Fixing temperature sensor /4 Temperature detection at the edge (at rear) of the fixing roller /L
(sub)
Contact thermistor
TS1 Thermostat /1 Fixing roller /U temperature abnormality detection
Non-contact bimetal
Set temperature: 190 °C
TS2 Thermostat /L Fixing roller /L temperature abnormality detection
Non-contact bimetal
Set temperature: 160 °C
FHCB Fixing heater control board Prevention of noise leak in the drive power for the fixing upper
lamp /1, /2 (L2, L3) 220 V system only
Symbol Name Function or method