7PrecautionsRefer all work related to the installation of this productto qualified service personnel or system installers.When the model in use is the NTSC model, connect theunit to a 120 V AC power source.When the model in use is the PAL model, connect theunit to a 220 - 240 V AC power source.Do not connect this unit to an outlet to which applianceswith high power consumption such as an air conditioning ora copy machine is already being connected.Do not operate the unit beyond its specified tempera-ture, humidity, or power source ratings.Use the unit at temperatures between 5 °C - 45 °C {41 °F -113 °F} and where the humidity is between 5 % - 90 %.Performance and lifetime of hard disk drives are easilyaffected by heat (used at high temperature) characteristi-cally. It is recommended to use this unit at temperaturesbetween 20 °C - 30 °C {68 °F - 86 °F}.POWER buttonThe POWER button is located on the rear of the unit. Eventhough the POWER button is set to "OFF", the power supplywill not be cut. To cut thepower supply, unplug thepower plug of the unit fromthe AC outlet. When usingthe power supply controlunit, turn off the power ofthe power supply controlunit.Built-in backup batteryThe built-in battery life is approximately 5 years as an indi-cation of replacement. (This is just an indication of replace-ment. We are not providing any guarantee of the built-inbattery lifetime. Replacement cost of the built-in battery isnot covered by the warranty even if it needs to be donewithin the warranty period.) When reaching the end of itslifetime, the time and date setting will not be saved after thepower of the unit is turned off. Ask the shop where you pur-chased the unit when replacement of the battery isrequired.Built-in hard disk drivesHard disk drives are vulnerable to vibration. Handle themwith care.It is possible to damage them if they are moved while theirmotors are still running. Do not move them just after turningtheir power on or off (for around 30 seconds).A lifetime of hard disk drives is limited by use.It is recommended to replace them after around 18 000hours of operation to prevent data loss from disk failures.Write error may occur frequently after around 20 000 hoursof operation and the head and motor deterioration mayoccur and will reach their lifetime after 30 000 hours ofoperation when they have been used at the recommendedambient temperature (approx. 25 °C {77 °F}).When hard disk drive trouble occurs, replace it immediate-ly. Consult your dealer for servicing.When replacing the hard disk drives, take notice of the fol-lowing.• Protect the hard disk drives from static electricity.• Do not stack them, or keep them upright.• Do not use an electric screwdriver to fix them.(Tightening torque: Approx. 0.49 N·m {5 kgf·cm})• Avoid rapid changes of the temperature/humidity toprevent condensation.(Acceptable change: within 15 °C/h {59 °F/h})Avoid the following locations for installation.• Places exposed to direct water, moisture, or sunlightdirectly• Places subject to having strong vibration or impact• Near magnetic field sources such as a television orspeakers, magnet, etc.• Steamy and oily places such as kitchens• Places which are not level• Place where condensation forms easily, where temper-ature changes greatlyPlace the recorder horizontally on a level surface.Do not place the recorder in an upright position. Whenstacking multiple recorders, clear a space of more than 5cm from both sides, the top, the bottom and the rear of therecorders.Heat dissipationRefer to the following to prevent fire and malfunction of therecorder.• Do not block the ventilation openings in the cover toprevent the recorder from overheating. Maintain therecorder periodically to prevent dust from blockingopenings.• A lifetime of the cooling fan is limited by use. Contactyour dealer for servicing.Avoid placing the recorder near noise sourcesIf the recorder is placed near noise sources such as fluo-rescent lamps, noises may be produced. In this case,rewire avoiding the noise sources, or move the recorder tothe place far from them.GroundingConfirm that the wire is connected from the SIGNAL GNDterminal to earth ground.A grounding connection must be made before connectingthe power plug of the recorder to the main power supply.When disconnecting the grounding wire, make sure that thepower plug of the recorder is disconnected from the mainpower supply.1211SIGNAL GNDPOWERONOFFAC INPOWER button