VDH-DXG Series Hardware Manual
12
Q 22.
Download files cannot be played back.
A : The possible causes:
1. No player
2. No graphic accelerator with DX8.1 or above
3. Save as AVI files and play with MEDIA PLAYER
Q 23.
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 guide 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 DVR or damage it. For long-term stability of the
DVR, 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 DVR from static
or inductive voltage damage.
Do not remove audio/video cables and RS-484 when the DVR is
powered on, or they will be damaged.
Do not use the TV interface in the DVR video output (VOUT), or the DVR
output circuit will be damaged easily.
Do not turn off the power switch directly to shut down the DVR. 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 DVR away from heats and hot places.
Keep the DVR chassis well-ventilated for better heat dissipation.
Have regular checks and system maintenance
