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6. INSPECTION AND MAINTENANCE
(2) Cleaning the optional keyboard
When cleaning the keyboard, note the following:
● Do not spray detergent directly onto the keyboard or spill liquid detergent on it.
● Do not wipe the keyboard with a wet cloth. If you do so, the equipment might fail.
HITACHI
● When using detergent, spray a minimum amount of detergent on a cloth.
● Before wiping the keyboard with a wet cloth, wring out the cloth well.
● Use a soft cloth, such as gauze.
● Before using detergent, carefully read the instructions on how to use the detergent.
● Cover the entire keyboard with gauze, spray detergent over it, allow it to stand for several minutes, and then
wipe off the keyboard.
HITACHI
NOTE
For information about the precautions for USB devices, see 6. USB Devices in PRECAUTIONS.
6-3
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