Mitsubishi Electric MELDAS 600M Series Instruction Manual page 435

(2) Other precautions for use
(a) Backlight life
(b) Luminance start
(c) Unevenness, luminescent spots and defects
(d) Contrast
7.3.5 PCMCIA Card
(1) Handling the PCMCIA card
The general handling methods for the PCMCIA Card are described below.
Refer to the instruction manual of the PCMCIA Card used for details.
(a) Precautions for use
(b) Precautions for storage
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The life of the backlight is 10,000 h/25°C (Time to when the luminance drops 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.
As a characteristic of the backlight, the luminance may drop slightly at lower temperatures. It
takes 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 volume on the LCD signal interface PCB.
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.
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CHAPTER 3 MAINTENANCE
7. Daily Maintenance
III – 49