Temperature/Humidity Detection Circuit; General Description; Circuit Configuration - Toshiba e-STUDIO166 Service Manual

11.6 Temperature/Humidity Detection Circuit

11.6.1

General Description

To prevent the print quality from varying depending on the temperature and humidity of the place where
the equipment is installed, the temperature and humidity of the outside air taken into the equipment are
detected. Based on the result of the detection, this circuit corrects the output of the main charger bias,
developer bias, transfer bias and separation bias as well as the output of the auto-toner sensor and the
laser.
11.6.2

Circuit configuration

The configuration of the temperature/humidity detection circuit is shown below. The voltage output from
the temperature/humidity sensor is converted digitally by the A/D converter on the MAIN board and is
input into the SoC. The higher the temperature or the humidity is, the higher the output voltage of this
sensor becomes.
Temperature/
humidity sensor
R
TH
(Temp)
V
RHV
(Hum)
e-STUDIO166/206
DRUM RELATED SECTION
MAIN board
+5V +5V
TEM-1A
SG
SG
HMS-1A
+
-
SG SG
Fig. 11-5
11 - 8
Digital
data
A/D
converter
© February 2007 TOSHIBA TEC CORPORATION All rights reserved
SoC