Overheat Protection - Ricoh G035 Service Manual

IMAGE FUSING AND PAPER EXIT

2.10.7 OVERHEAT PROTECTION

If the hot roller temperature becomes greater than 230°C, the CPU cuts off the
power to the fusing lamp. At the same time, an SC543 is generated.
Even if the thermistor overheat protection fails, there is a thermofuse in series with
the common ground line of the fusing lamp. If the temperature of the thermofuse
reaches 169°C, the thermofuse opens, removing power from the fusing lamp. At
the same time, the copier stops operating. At this time, an SC542 is generated.
SM 2-59 G035