11-9
HDW-750/750CE V1
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C003 : HUMID SENSOR
Checks operation of the humid sensor.
1.
Select “C003 : HUMID SENSOR” and press the rotary encoder.
2.
Touch the humid sensor (2 locations) with a cotton swab moist-
ened with water.
3.
Check to see that “DRY” changes to “WET” when the humid
sensor is moistened.
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“WET” appears even only one of the two sensors is moistened
and detects humidity. Therefore, check the two sensors respec-
tively.
4.
Check that the monitor display changes to “DRY” when the
humid sensor is dried as it is wiped with a dry cotton swab or as
the water content is evaporated by blowing air with a blower.
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If the monitor display does not change from “DRY” to “WET”
when the humid sensor is moistened or if the monitor display does
not return from “WET” to “DRY” when the humid sensor is
dried, check the followings.
.
Humid sensor
.
Humid detector circuit (IC303 and others/MDC-13 board, IC1
and others/SS-92 board)
.
Signal path between the respective sensors and the MDC-13
board (CN510, CN511)
.
Signal path between the MDC-13 board and the SS-92 board
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The TALLY lamp keeps turning on for about 60 seconds after the
display returned from “WET” to “DRY” and the HUMID display
appears on the display window.
(For the details of the warning system, refer to “6-3. Warning
System” of the Operation Manual.)
SERVO CHECK MENU
C003:HUMID SENSOR
HUMID SENSOR : DRY
11-3. Contents of Menus
