Ricoh G176, Service Manual

Page: 232 / 294

Image Fusing and Paper Exit
G176/G177/G176L 6-30 SM
The fusing temperature for each mode is as follows:
Condition Temperature (
o
C)
Standby Mode 135
Ready to Print 168
Printing
Charge
Thermistor
Paper Feed Start-30
s
0.5-2min. 2-4min 4-6min. 6min.-
Plain, OHP Bypass 190 185 180 175 170
Env.
Bypass,
Env. Feeder
195 195 190 190 190
Postcard Bypass 195 195 190 190 190
<15
o
C
Thick Bypass 195 195 190 190 190
Plain, OHP Bypass 180 180 175 170 170
Env. Bypass,
Env. Feeder
190 190 190 190 190
Postcard Bypass 190 190 190 190 190
>15
o
C
Thick Bypass 190 190 190 190 190
Overheat Protection
If the hot roller temperature becomes greater than 245
°
C, the CPU cuts off the power to
the fusing lamp. At this time, SC543 will be generated.
If the thermistor overheat protection fails, there is a thermostat in series with the common
ground line of the fusing lamp. If the temperature of the thermostat becomes greater than
210
°
C, the thermostat opens, removing power from the fusing lamp. At this time, the
machine stops operation.