Справочник Пользователя для Mitsubishi Electronics C6/C64

4.2  Maintenance Items 

 

II - 24 

1)  Keep the rear side of the escutcheon as clean as possible. 
2)  Wipe the escutcheon with a soft, clean, dry cloth. If cleaning is still required, put some neutral 

detergent on a cloth and wipe. Do not use alcohol, thinner, etc.   

1)  The polarizing plate (display surface) of the LCD panel surface can be easily scratched, so be 

careful during handling. 

2)  Glass is used in the LCD panel. Be careful not to drop the LCD panel or allow it to hit hard 

objects, as the glass may chip or break.   

3)  The polarizing plate may be stained or discolored if drops of water, etc., adhere to it for long 

periods, so be sure to wipe off any moisture immediately.   

4)  Wipe off any dirt, dust, etc., on the polarizing plate using absorbent cotton or other soft cloth.   
5)  A CMOS LSI is used in the LCD panel, so be careful of static electricity when handling.   
6)  Never disassemble the LCD panel. Doing so will damage the panel. 

1)  Do not store the LCD panel in locations having a high temperature or humidity. (Store within 

the storage temperature range.)   

2)  When storing the LCD panel as an individual unit, be sure that other objects do not touch or 

hit the polarizing plate (display surface). 

3)  When storing the LCD panel for extended periods, be sure to store in a dark place away from 

exposure to direct sunlight or fluorescent light.   

The life of the backlight is 25,000 hours/25

°C. (Time for luminance to drop to 50% of the initial 

value.) 
The backlight life is dependent on the temperature. The life tends to be shorter when used 
continuously at lower temperatures.   

Due to the characteristics of the backlight, the luminance could drop slightly at lower temperatures. It 
will take approx.10 to 15 minutes for the luminance to reach the rated value after the power is turned 
ON. 

Uneven brightness, small luminescent spots or small dark spots may appear on LCD, but this is 
not a fault.   

The contrast of STN method LCD panels changes with temperature fluctuation. If this happens 
and the panel is difficult to see, open the operation box door and adjust the contrast with the 
contrast adjustment potentiometer on the LCD signal interface PCB. 
When using the 10.4 LCD, the brightness can be adjusted with the parameter settings. 

The general handling methods for the IC card are described below. 
Refer to the instruction manual of the IC card used for details.   

1)  Insert the card in the correct direction. 
2)  Do not touch the connector area with the hands or metal. 
3)  Do not apply excessive force to the connector area. 
4)  Do not subject the card to bending or strong impacts. 
5)  Do not open the cover or disassemble the card.   
6)  Do not use the card in dusty locations. 

1)  Do not store the card in locations having a high temperature or humidity. 
2)  Do not store the card in dusty locations.