NEC NDH-81 NDH-161 owner manual Resetting the recorder, You can reset the recorder as follows

Symptom	Cause	Solution
Cannot play a disc	The disc was recorded in Video mode.	Finalize the disc. (page 20)
recorded using this
	Some players will not play even a	No solution.
recorder on another
	finalized disc recorded in Video mode.
player.
	The disc was recorded in VR mode,	The other player must be RW
		compatible in order to play it.
	Discs recorded with copy-once material	No solution.
	cannot be played on other players.
Cannot record or did	The remaining blank space on the	Use another disc.
not record successfully.	disc is insufficient.
	The source you are trying to record is	You cannot record the source.
	copy protected.
	When setting the recording channel, the	Select the channel on the recorder’s
	channel is tuned on the TV’s own tuner.	built-in TV tuner.
	When recording to a Video mode disc,	Use a VR mode formatted disc for
	programs that are copy-once	copy-once material.
	protected cannot be recorded.
Timer recording is not	Clock in recorder is not set to correct	Set clock to correct time. See “Manual
possible.	time.	Clock Set” on page 16.
	Timer has been programmed	Reprogram Timer. See “Timer
	incorrectly.	Recording” on page 36.
	Timer record indicator light does not	Reprogram Timer.
	appear after programming timer.
Stereo Audio Record	TV is not Stereo-compatible.	No solution.
and/or Playback is not
	Broadcast program is not in stereo	No solution.
present.
	format.
	The recorder A/V Out jacks are not	Make A/V connections. Stereo is
	connected to TV A/V In jacks.	available only via A/V output from the
		recorder.
	The recorder Audio/Video Out is not	Select AUX or A/V source as TV
	selected for viewing at the TV.	input.
	The recorder’s TV audio channel is	Set TV audio channel mode to Stereo.
	set to mono.	See “Changing TV audio channel” on
		page 35.
The remote control	The remote control is not pointed at	Point the remote control at the remote
does not work properly.	the remote sensor of the recorder.	sensor of the recorder.
	The remote control is too far from the	Operate the remote control within
	recorder.	7 m.
	There is an obstacle in the path of the	Remove the obstacle.
	remote control and the recorder.
	The batteries in the remote control	Replace the batteries with new ones.
	are exhausted.

Resetting the recorder	...you can reset the recorder as follows:
If you observe any of the following symptoms...	Press and hold the OPERATE button for at least
	five seconds. This will force the unit to power off
The unit is plugged in, but the power will not turn
	then turn the unit back on.
on or off.
	Unplug the power cord, wait at least five seconds,
The front panel display is not working.
	and then plug it in again.
The recorder is not operating normally.

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