TallyGenicom 9045N, Service Manual

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6 – 31
Chapter 6 Principles of Operation
6.3 Fuser Control
6.3.1 Fuser Control
The Halogen Lamp is controllably turned ON and OFF, based on the Fuser control temperature. At
the start of warm-up and when the MAIN MOTOR is at rest, the standby temperature is taken as the
Fuser control temperature. When the MAIN MOTOR is operating except at warm-up, the running
temperature is taken as the Fuser control temperature.
6.3.2 ON/OFF Control of Halogen Lamp
The Halogen Lamp is controllably turned ON and OFF to maintain the Fuser control temperature.
6.3.3 Warm-up of Fuser
The Halogen Lamp is lit up (turned ON) simultaneously with the start of warm-up of the Fuser. When
the temperature of the HEAT ROLL surface (detected temperature of THERMISTER) reaches the
Fuser control temperature (standby temperature), the warm-up of the Fuser is ended.
During warm-up of the Fuser, the MAIN MOTOR is in operation.
6.3.4 Fuser Temperature in Ready State
180 to 185
o
C in Ready (standby) state (During operation, it is higher than 185
o
C.)
6.3.5 Fuser Temperature when Abnormal Temperature (higher or lower) is Detected
Higher temperature: 250
o
C
Lower temperature: 130
o
C