Toshiba LF600F - Manual (Page 35)

TOSHIBA i6,R8,A0,8,6,9,
7. LCD Display and Controls
7.1 Name and Function of Each Part of LCD Display
The LDC display and infrared switches (hereafter, called "control key") in front of the converter
allows you to view or set various constants such as measured values and parameters.
Control key
O
LF600
Figure 7.1 Display section of LF600
Control key
Figure 7.2 Display section of LF602
Instructions
The operation principle of infrared switch is to irradiate infrared to the front of control panel and
detect the reflection from finger when operating.
Normal operation is impeded depending on the conditions such as disturbing light from surroundings
or stain attached to the control panel. When unable to avoid such condition, operate the EMF
converter in the following manner.
Remove the factor to impede proper operation of infrared switch as below:
• Cover the control panel by hand so that light does not shine on it
• Clean the stain attached on the control panel
• Clean the stain on the finger or the gloves to operate the EMF converter, or wear gloves in light color
•When there is a reflecting object placed opposing to the control panel, stand in-between the reflecting
object and the control panel to block the light
Following are considered as the factors to impede infrared switch to operate properly.
• Intense light such as direct sunlight and reflected sunlight by window glass or metal plate
• Place where brightness changes always such as ON/OFF of lighting
• Dense smoke or steam near the control panel
• Those attached on the control panel such as rain (dew drop), snow, ice, mud and oil, and haze due to
their attachment
• Operation of the control panel by hands wearing gloves in dark color or stained fingers and gloves
• Light reflecting object near the control panel, or reflecting object such as metal plate placed opposing
to the control panel
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