6 76. ALARMS 726.1 Alarm Input 726.2 Alarm Output 746.3 Alarm Setup and Activation 757. HARD DISK DRIVE 787.1 Installation/Removal 787.2 Calculating the Recording Capacity of a Hard Disk Drive 80APPENDIX 81A.1 Troubleshooting 81A.2 Specifications 84Q-SEE PRODUCT WARRANTY 87Questions or Comments? Contact Us 88To prevent damage to your Q-See product or injury to yourself or to others, read andunderstand the following safety precautions in their entirety before installing or using thisequipment. Keep these safety instructions where all those who use the product will read them.n Check the unit and any accessories included in the package immediately after opening. Ifitems are missing or damaged, repackage and return to the point of purchase.n Use the proper power source. Only use the power adapter supplied with your system. Donot use this product with a power source that applies more than the specified voltage (100-240V AC).n Never insert anything metallic into the DVR. Inserting anything into the DVR or its case canbe a source of dangerous electric shock.n Do not operate in dusty areas. Avoid placing the DVR in places that are dusty.n Do not expose this product to rain or use near water. If this product accidentally gets wet,unplug it and contact an authorized dealer immediately.n Keep product surfaces clean and dry. To clean the outside case of the DVR, gently wipeusing a lightly dampened cloth (only use water, do not use solvents).n Do not operate this DVR without the cover securely in place. Do not attempt to do anyrepairs to the DVR yourself. If there are unusual sounds or smells coming from the DVR,unplug it immediately and contact Q-See technical support. Under no circumstancesshould the cover be removed while the device is connected to a power source. You shouldonly remove the cover to install/replace the hard disk drive (See Chapter 6) or replace thestandard 3v lithium cell battery on the motherboard. These are the only user serviceableparts. You may need to replace the battery if the internal clock resets itself after a poweroutagen Handle DVR box carefully. If you accidentally drop your DVR on any hard surface, it maycause a malfunction. If the DVR doesn’t work properly due to physical damage, contact anauthorized dealer for repair or exchange.n Make sure there is proper air circulation around the unit. This DVR system uses a hard drivefor video storage which generates heat during operation. Do not block air holes located onthe bottom, top, sides and back of the DVR as they are designed to keep the system coolwhile running. Install or place this product in an area where there is ample air circulation.n Provide proper ventilation. This DVR has a built-in fan that properly ventilates the system.Do not cover or impede this fan.INTRODUCTION CHAPTER 1WARNING! ELECTRIC SHOCK RISK!