User manual

Chapter 7 Specifications
7-3
• When using any of the PS-A’s optional devices, be sure to check that device’s
specifications for any special conditions or cautions that may apply to its use.
• Be aware that not only does the Hard Disk have a fixed lifetime, but that acci-
dents can always occur. Therefore, be sure to back up your Hard Disk’s data reg-
ularly, or prepare another Hard Disk unit that can be used for backup.
• The Hard Disk lifetime given here may be reduced due to unforeseen environ-
mental factors, however, generally speaking, the disk should last for 20,000
hours (of operation) or approximately 5 years, whichever comes first at an operat-
ing temperature of 20°C and 333 hours of operation per month. (HDD access fre-
quency of 20% or less)
• Using the Hard Disk in an environment that is excessively hot and/or humid will
shorten the disk’s usage lifetime. A wet bulb temperature of 29°C or less is rec-
ommended. This is equivalent to the following data.
Temperature Humidity
at 35°C no higher than 64%RH
at 40°C no higher than 44%RH
• In order to extend the lifetime of the hard disk, Pro-face recommends you set the
Windows [Control panel]-[Power Management option]-[Turn off hard disks] selec-
tion to turn the hard disk off when the unit is not being operated. A setting of 5
minutes is recommended.
• When using CD-ROM Drive, be sure to use the PS-A unit where no excessive
vibration. It causes data read error.