4. DAILY MAINTENANCE AND PERIODIC INSPECTION AND MAINTENANCE
4.4 Cleaning and Handling
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4.4.3 Hard disk
(1) Handling the hard disk drive
a) Precautions for use
①
Correct connect the cable.
②
Do not touch the connector section with hands or metal.
③
Do not apply excessive force on the connector section.
④
Do not drop or apply strong impacts on the drive.
⑤
Do not disassemble the drive.
b) Precautions for storage
①
Avoid storing the drive in high temperature, high humidity places.
②
Do not place the drive near magnets or items that generate strong magnetic fields.
(2) Other precautions for use
a) Recommendation for making backups
The hard disk is a durable part, so make a copy of the hard disk to save important data.
4.4.4 LCD panel
(1) Handling the LCD panel
a) Precautions for use
①
The polarizing plate (display surface) of the LCD panel will scratch easily, so take care when
handling.
②
Glass is used and will crack or break if dropped or contacted against hard objects. Take care
when handling.
③
If water drops, etc., are left on the polarizing plate for a long time, the plate could discolor or
become spotted. Wipe of any moisture immediately.
④
If the polarizing plate is contaminated, wipe it off with cotton or a soft cloth, etc.
⑤
A CMOS LSI is used, so take special care against static electricity when handling.
⑥
Never disassemble the LCD panel. Doing so could lead to damage.
b) Precautions for storage
①
Avoid storing the LCD panel in high temperature, high humidity places. (Store within the
storage temperature range.)
②
When storing the LCD panel as a single unit, make sure that other items will not contact the
polarizing plate (display surface).
③
When storing the LCD panel for a long time, store it in a dark place where it will not be subject
to direct sunlight or fluorescent light.
(2) Other precautions for use
a) Backlight life
The life of the backlight is 10,000 hours/25
°
C. (Time for the brightness to drop to 50% of the
initial value.)
The life depends on the temperature, and when used continuously at low temperatures, the life
will be shorter.
b) Brightness at startup
Due to the characteristics of the backlight, the brightness will drop slightly at low temperatures. It
may take several minutes for the brightness to reach the rated value after the power is turned
ON.
c) Unevenness, bright spots and dark spots
The LCD display may have uneven brightness, small bright spots or small dark spots, but this is
not a fault.
d) Contrast
If the contrast of the STN method LCD panel changes due to temperature fluctuations making
the panel difficult to view, open the operation box door and adjust the contrast adjustment