Electrical Circuit Description; Temperature/Humidity Detection Circuit - Toshiba e-STUDIO2500c Service Manual
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- Operator's manual (414 pages) ,
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12.4 Electrical Circuit Description
12.4.1
Temperature/humidity detection circuit
The temperature/humidity detection circuit detects the temperature and humidity inside of the equip-
ment by means of the corresponding sensor so that the printing quality is not changed due to their
adverse influence where the equipment is set up, and corrects the output of the auto-toner sensor or
similar according to the result.
The temperature/humidity detection circuit is composed as shown in the figure below. It converts the
voltage of each analog signal output from the temperature/humidity sensor into a digital signal by
means of the A/D converter on the LGC board. The lower the temperature and the higher the humidity,
the higher the voltage of each analog signal output from the temperature/humidity sensor becomes.
Temperature/
humidity sensor
R
TH
(Temp)
V
RHV
(Hum)
Control signal
Signal
TEMP-1C
Temperature detection signal (analog)
HMS-1C
Humidity detection signal (analog)
May 2006 © TOSHIBA TEC
LGC board
+5.1VB
+5.1VB
TEMP-1C
SG
HMS-1C
+
-
IC84
SG
Fig. 12-3
Function
12 - 5
IC72
IC41
ADCDI-1C
A/D
ASIC
converter
e-STUDIO2500c/3500c/3510c DEVELOPER UNIT
12
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