Over Scan ratio is too big, Excessive Video NR

Troubleshooting

Phenomena that may be easy to be mistaken for machine defects (continued)

Phenomenon	Cases not involving a machine defect	Reference
Phenomenon	Cases not involving a machine defect	page
		page

	When the projector is operating in Eco mode,
	flickering may appear on screen.	53
	Set ECO MODE to NORMAL, and set AUTO ECO MODE to	53
Some kind	Set ECO MODE to NORMAL, and set AUTO ECO MODE to
Some kind	OFF, in the SETUP menu.
of image
of image	The OVER SCAN ratio is too big.
degradation	The OVER SCAN ratio is too big.	46
degradation	Adjust OVER SCAN in the IMAGE menu smaller.	46
such as	Adjust OVER SCAN in the IMAGE menu smaller.
flickering or	Excessive VIDEO NR.	48
stripes appear	Change the setting of VIDEO NR in the INPUT menu.	48
on screen.	Change the setting of VIDEO NR in the INPUT menu.
on screen.	The FRAME LOCK function cannot work on the
	The FRAME LOCK function cannot work on the
	current input signal.	50
	Set FRAME LOCK in the INPUT menu to OFF.
The sound	When LAN, USB TYPE A or USB TYPE B port is
or image	selected, some parts of the output may be missing
is unstable	due to signal processing delay.	26, 55
or is output	Change the signal or use another port.
intermittently.
The computer	The computer cannot start up in the current hardware
connected to	configuration.
the USB TYPE	Disconnect the USB cable from the computer, then	11, 12
B port of the	reconnect it after starting up the computer.
projector does not	reconnect it after starting up the computer.
start up.
	The SAVING function is working.	54
	Select NORMAL for STANDBY MODE item in the SETUP	54
RS-232C does	menu.
RS-232C does	The COMMUNICATION TYPE for the CONTROL port is
not work.	The COMMUNICATION TYPE for the CONTROL port is
	set to NETWORK BRIDGE.	70
	Select OFF for COMMUNICATION TYPE item in the	70
	Select OFF for COMMUNICATION TYPE item in the
	OPTION - SERVICE - COMMUNICATION menu.
	The SAVING function is working.	54
	Select NORMAL for STANDBY MODE item in the SETUP	54
Network does	menu.
Network does	The same network address is set for both wireless
not work	The same network address is set for both wireless
	and wired LAN.	75, 79
	Change the network address setting for wireless or wired	75, 79
	Change the network address setting for wireless or wired
	LAN.
(continued on next page)

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8974WU, 8975WU, 8973W, 8972W, 8971 specifications

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Dukane 8975WU, 8970 Over Scan ratio is too big, Excessive Video NR, Saving function is working

Models: 8974WU 8975WU 8973W 8972W 8971 976SX 8970

The OVER SCAN ratio is too big.

Excessive VIDEO NR.

The FRAME LOCK function cannot work on the

current input signal.

When LAN, USB TYPE A or USB TYPE B port is

The SAVING function is working.

The same network address is set for both wireless

and wired LAN.

8974WU, 8975WU, 8973W, 8972W, 8971 specifications