Heat Lamp Control Circuit - Panasonic KX-FLC418RU Service Manual

KX-FLC418RU

6.18. Heat Lamp Control Circuit

The temperature of the fixing part of the Fixing Unit is converted to a voltage by THERMISTOR and input to IC106-4pin. The
heater turns ON/OFF the photo-coupler PC2 at the heater control port (IC106-29pin), and is turned ON/OFF at the triac SCR1.
And two thermostats are set on the AC line as the safety devices.
1. Control at Printing
a. After the printing signal is received, turn ON the heater.
b. After that, turn ON the motor at the Primary Stable Temperature (150°C).
c. After that, control at the Secondary Stable temperature (170°C), N/N(25 - 30°C), and feed papers.
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