Kyocera FS-9120DN Service Manual page 157

FS-9120DN/9520DN
(2) Computing the absolute humidity
The humidity sensor (HUMSENS) converts the relative humidity detected by the humidity sensing element into a voltage
and sends it to the engine controller PWB (EPWB). The engine controller PWB (EPWB) computes the absolute humidity
based on this HUMSENS signal and the temperature (ETTH signal) detected by the external temperature thermistor
(ETTH).
2-1-12
ETTH
Humidity
sensing element
HUMSENS
Figure 2-1-15 Absolute humidity computation block diagram
EPWB
1 ETTH
YC16-B10
2 GND
YC16-B9
3 HUMSENS
YC16-B8
4 5 V DC
YC16-B7