Canon LBP-1260, Service Manual, Page: 67 / 218

CHAPTER 2
D.
Fixing and Unit
ROLLER SURFACE TEMPERATURE signal
1. outline
decreases.
The
upper/lower rollers of the fixing unit
and the delivery rollers are driven by the
main motor (Ml). The upper roller Is
heated
by a
fixing roller heater 750
The upper roller surface temperature is
detected by a thermistor As the
surface temperature increases, the
resistance of the thermistor
decreases, and the voltage of the FIXING
According to the voltage of the
signal, microprocessor (CPU) on the DC
controller makes the FIXING ROLLER
HEATER DRIVE signal
or
to set the upper roller surface temperature
to the appropriate value.
The target temperatures of the upper
roller during
WAIT, STANDBY, and
PRINT state are listed in Table 2-4.
DC controller PCB
Connecter circuit
-1
Power supply
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