Q-See QC804 User Manual (English)

Questions and Answers:

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oliverrossAug 20, 2025
How to fix a Q-See DVR that does not boot up properly?
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  Joan BradleyAug 21, 2025
  If your Q-See DVR isn't booting correctly, consider these potential causes and solutions: * Incorrect input power: Check the power supply. * Damaged power switch button: Replace the power switch button. * Incorrect firmware file: Use the correct firmware file. * Hard drive issues: Check the hard drive and cable. * Front panel error: Check the front panel. * Damaged main board: Replace the main board.
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Andrea BowersAug 22, 2025
How to troubleshoot unstable network connection on Q-See DVR?
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  Gary BuckAug 22, 2025
  If you're experiencing an unstable network connection with your Q-See DVR, consider the following: * General network instability: Ensure network stability. * IP address conflict: Resolve any IP address conflicts. * MAC address conflict: Resolve any MAC address conflicts. * Faulty network card: Check the network card on your PC or combo NVR.
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Angela DoyleAug 25, 2025
What to do if my Q-See DVR system cannot detect the hard drive?
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  contrerasjeremyAug 25, 2025
  If your Q-See DVR system cannot detect the hard drive, here are some things to check: * Ensure a hard drive is installed. * If installed, the hard drive may be damaged and need replacement. * Verify the hard drive cable connection is secure. * The main board SATA port might be damaged, requiring replacement.
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Brett RamseyAug 27, 2025
Why does my Q-See DVR often automatically shut down or stop running?
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  christinamarshallAug 27, 2025
  Your Q-See DVR might be shutting down or stopping due to several reasons: * Unstable or low input voltage: Ensure stable input voltage. * Hard drive issues: Check the hard drive and cable for malfunctions. * Insufficient power: Ensure the device is getting enough power. * Unstable front video signal: Ensure a stable front video signal. * Overheating or dust: Improve the working environment. * System board malfunction: The system board may need replacement.
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Jason AtkinsAug 27, 2025
Why is the motion detection function not working on my Q-See DVR?
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  Tyler JimenezAug 28, 2025
  If the motion detection function isn't working on your Q-See DVR, it could be due to: * Incorrect period setup: Correct the period setup. * Incorrect motion detection zone setup: Correct the motion detection zone setup. * Low sensitivity: Increase the sensitivity.
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Barbara WilliamsAug 29, 2025
Why can't I log in to my Q-See DVR client-end or web interface?
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  Cynthia DiazAug 29, 2025
  If you're having trouble logging into your Q-See DVR through the client or web interface, consider these possibilities: * Outdated operating system: Update to Windows XP or later if using Windows 98 or ME. * ActiveX control disabled: Enable ActiveX control. * Outdated video card driver: Upgrade your video card driver. * Network connection error: Check your network connection. * Network setup error: Correct your network setup. * Invalid credentials: Check your password or user name.
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Ana BrownAug 31, 2025
What to do if there is no video output to one or more channels on Q-See DVR?
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  rachael90Aug 31, 2025
  If you're experiencing no video output on one or more channels of your Q-See DVR, consider the following: * Incorrect firmware: Use the correct firmware file. * Brightness at zero: Restore factory default setup. * Weak or absent video input signal: Check the video input signal. * Privacy mask setup: Adjust the privacy mask setup. * Hardware malfunctions: Check the combo NVR hardware.
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Alexis HinesSep 2, 2025
Why is the video distorted when searching local records on my Q-See DVR?
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  Shawn SmithSep 2, 2025
  If the video is distorted when searching local records on your Q-See DVR, it might be due to: * Low video quality setting: Increase the video quality setting. * Program read error: Restart the NVR. * Hard drive data cable error: Check the hard drive data cable. * Hard drive malfunction: Replace the hard drive. * NVR hardware malfunction: Check the NVR hardware.
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Leslie DavidSep 4, 2025
Why is the real-time video color distorted on my Q-See DVR?
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  Patricia Dawson DVMSep 4, 2025
  If the real-time video color is distorted on your Q-See DVR, check the following: * Incorrect NTSC/PAL setup: Correct the NTSC and PAL setup when using BNC output. * Incompatible resolution settings: Make resolution settings compatible between the NVR and monitor. * Long video cable: Shorten the video cable. * Incorrect color or brightness setup: Adjust the color or brightness setup on the combo NVR.
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James FernandezSep 5, 2025
Why is there only mosaic and no video when previewing or playing back video files remotely on my Q-See DVR?
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  Jonathan DoyleSep 5, 2025
  If you're seeing only mosaic and no video when remotely previewing or playing back video files on your Q-See DVR, it could be caused by: * Insufficient network bandwidth: Increase network bandwidth. * Insufficient computer resources: Upgrade computer resources. * Multiple-cast group setup: Avoid using multiple-cast group setup in combo NVRs. * Privacy mask or channel protection setup: Check privacy mask or channel protection setup. * Insufficient user rights: Check user monitoring rights. * Poor local video output quality: Improve NVR local video output quality.

Q-See QC804 Specifications

General

Video Input Channels	4
Video Output	HDMI, VGA
Compression Format	H.264
Remote Access	Yes
Power Supply	12V DC
Operating System	Embedded Linux
Motion Detection	Yes
USB Ports	2
Storage Capacity	Up to 6TB
Network Interface	Ethernet
Hard Drive Support	1 SATA
Hard Drive Capacity	Supports up to 6TB