Vacron VDH-NK205A, Hardware Manual

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VDH-NK205A Hardware Manual
11
4. Controller or NVR front panel is out of order
Q 12. Forget the administrative password or Internet password
A : The possible solution:
1. Please contact local customer service staff or call the customer service
phone headquarters, we will guides you how to solve by the machine
type and version of the program.
2. Maintenance

Damped dust on the PCB board will cause a short circuit and will do
something wrong to the NVR or damage it. For long-term stability of the
NVR, regularly brush the circuit boards, connectors, fans and chassis to
remove dust.

Please ensure the project is well-grounded, so images, audio signal will
not be disturbed. At the same time, we can protect the NVR from static
or inductive voltage damage.

Do not remove audio/video cables and RS-484 when the NVR is
powered on, or they will be damaged.

Do not use the TV interface in the NVR video output (VOUT), or the NVR
output circuit will be damaged easily.

Do not turn off the power switch directly to shut down the NVR. Use the
menu shutdown or OFF button on the front panel (press more than three
seconds) to turn off the power automatically to avoid hard Drive crash.

Keep the NVR away from heats and hot places.

Keep the NVR chassis well-ventilated for better heat dissipation.

Have regular checks and system maintenance。