Heat Lamp Control Circuit - Panasonic KX MC6020 - Color Laser - All-in-One Service Manual

Optional lower input tray optional automatic duplex unit

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6.16. Heat Lamp Control Circuit

The temperature of the fixing part of the Fuser Unit is converted to a voltage by THERMISTOR and input to IC300-U34pin. The

heat lamp is turned on/off by the HTRCTL signal (IC600-G17pin) through the photo triac (PC2) and the triac (CR001). 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 and BK motor.

b. After that, control at the Detection Temperature 1 (147°C), and turn ON the color motor.

c. After that, control at the Detection Temperature 2 (162°C), and print process start.

d. After that, control at the Fuser temperature A (160~188°C), and feed papers in a fuser unit.

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