Ricoh K-C3.5L Service Training page 105

Caused by starting and stopping fusing lamp
power every second
Slide 105
More on Room Lighting Affects
The CPU checks the output from the fusing thermistor once every 1.5 seconds
(default setting). The CPU compares the current and previous temperatures.
Based on the result, it then decides how long the fusing lamp power should be
on during the next one-second interval
Even with the 'soft start' feature, starting and stopping the fusing lamp power
every second can cause fluorescent lighting in the room to flicker.
To reduce this flickering, use SP 1108 to change the cycle to a longer setting.
Room Lighting Affects
SP 1108: Reduce flicker by inputting a larger
value
BICU may be unable to detect fusing lamp errors
if the cycle is more than 2 seconds.
105
Model K-C3.5L