Q-See QSC26416, QSF2648016, QSF2648008 Appendix E Troubleshooting, Failure Possible reasons

User Manual for Commercial Series Net DVR

Appendix E Troubleshooting

Failure		Possible reasons
After plugging in power, turning on the power switch,	1)	Power cable is damaged.
“POWER” light in front Panel does not turn on, and fan	2)	Power supply is damaged.
does not work.
After plugging in power, turning on the power switch,	1)	Front	panel		cable	is
“POWER” light in front panel turn to green while fan does		damaged.
not work.	2)	Fan is broken.
After plugging in power, turning on switch, “POWER”	The ATX plug in main board is
light turn to green, the indicator lights in the panel turn on	not plugged in well.
at the same time, but fan does not work.
DVR continuously reboots after start up, and makes a	1)	Used	wrong		firmware
sound like “di” every 10 seconds.		upgrade
	2)	Compression		board		has
		problems.
	3)	Main board has problems.
There are no images on the monitor connected with VOUT	1)	The cable connected with the
after DVR is started.		monitor is damaged.
	2)	Real board of DVR has
		problems.
	3)	Main board of DVR has
		problems.
Cannot find the hard disk in reboot process.	1)	Hard disk cable is damaged.
	2)	The power cable of hard disk
		is not connected.
	3)	Hard disk has problems.
No reponse in HyperTerminal interface.	1)	Baud rate does not match.
	2)	RS-232 cable is damaged.
	3)	Serial port of PC is damaged.
	4)	RS-232 port of DVR is
		damaged.
DVR can not control PTZ through RS-485 port.	1)	RS-485	cable		is	not
		connected		correctly		or
		damaged.
	2)	PTZ parameters error.
	3)	RS-485 port of DVR is
		damaged.
Client software can not view DVR live image.	1)	Network error.
	2)	Wrong	connectinon settings

Page 117 Total 121