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.

 

 

 

54

Page 53 Page 55
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Image 54
NEC NDH-81 Resetting the recorder, You can reset the recorder as follows, If you observe any of the following symptoms
Page 53 Page 55

NDH-81 specifications

The NEC NDH-81 is a high-performance headphone designed to deliver an exceptional audio experience, using a blend of advanced technologies and ergonomic design. This model is recognized for its professional-grade sound quality and is particularly appealing to audiophiles and sound engineers alike.

One of the NDH-81's standout features is its closed-back design, which provides excellent sound isolation. This allows users to immerse themselves in the music without distractions from ambient noise. The headphones utilize a well-engineered bass reflex system that enhances low-frequency response while maintaining clarity across all ranges. This ensures that listeners can experience deep bass without sacrificing the integrity of mid- and high-frequency sounds.

The NDH-81 is equipped with large, high-fidelity 38mm dynamic drivers. These drivers are meticulously crafted to ensure a balanced sound stage, making it suitable for critical listening and professional audio applications. The headphones have an impressive frequency response range, typically between 5 Hz to 40 kHz, which encompasses the full spectrum of human hearing. This broad range allows for accurate reproduction of audio signals, capturing nuances that are often lost in lower-quality headphones.

Comfort is another essential aspect of the NDH-81. The headphones feature plush, breathable ear pads made from soft velour material. This ergonomic design ensures enduring comfort during extended listening sessions, crucial for professional use where long hours of wear are common. Additionally, the adjustable headband provides a secure fit without causing fatigue.

Another innovative technology incorporated into the NDH-81 is its impedance compatibility. With an impedance of 24 ohms, these headphones can be driven effectively by a wide variety of devices, from portable audio players to professional studio equipment. This versatility allows clients to utilize the NDH-81 across different audio setups without compromising sound quality.

The build quality of the NEC NDH-81 also deserves attention. Constructed with durable materials, these headphones are built to withstand the rigors of everyday use, ensuring longevity and reliability. Furthermore, the detachable cable feature adds to the practicality of the design, allowing for easy replacement in case of wear and tear.

In conclusion, the NEC NDH-81 stands out in the competitive headphone market due to its combination of advanced audio technologies, comfortable design, and durable construction. Whether for professional studio work, critical listening, or casual enjoyment, the NDH-81 offers a compelling solution for sound enthusiasts seeking quality and performance.
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