Answer:

(1) A place avoiding direct sunlight

(2) A place that the temperature and humidity are within specifications:
　　20-35℃ (68 to 95°F), 35-65%(Rh)

(3) A place not exposed to direct air blow from air conditioner, etc.

(4) A place that is horizontal.
　　(If the machine is not placed horizontally, drawing quality may be degraded.)

(5) Vibration –free place.

(6) A place where fire is not used.

(7) A clean place equivalent to normal office level. (0.15mg/㎥ or less)