NEC NDH-81 owner manual Troubleshooting, Symptom Cause Solution

Page 53

Troubleshooting

Check the following guide for the possible cause of a problem before contacting service.

Symptom

Cause

Solution

 

 

 

 

 

 

 

 

 

No power.

The power cord is disconnected.

Plug the power cord into the wall

 

 

 

outlet securely.

 

 

No picture.

The TV is not set to receive recorder

Select the appropriate video input

 

 

signal output.

mode on the TV so the picture from

 

 

 

the recorder appears on the TV

 

 

 

screen.

 

 

 

The video cable is not connected

Connect the video cable securely.

 

 

securely.

 

 

 

 

 

 

The connected TV power is turned off.

Turn on the TV.

 

 

 

 

 

 

 

Progressive is set to ON, while the TV

Turn off the progressive scan (see page 16).

 

 

cannot receive progressive scan

 

 

 

 

 

 

mode.

 

 

 

 

 

 

 

 

 

 

 

No sound.

The equipment connected with the

Select the correct input mode on the

 

 

audio cable is not set to receive

audio receiver so you can listen to the

 

 

recorder signal output.

sound from the recorder.

 

 

 

 

 

 

 

 

The audio cables are not connected

Connect the audio cable securely.

 

 

securely.

 

 

 

 

 

 

 

 

 

 

 

 

 

The power of the equipment connected

Turn on the equipment connected

 

 

with the audio cable is turned off.

with the audio cable.

 

 

 

 

 

 

 

 

The audio connecting cord is damaged.

Replace it with new one.

 

 

 

 

 

 

 

The playback picture is

The disc is dirty.

Clean the disc.

 

poor.

 

 

 

 

 

 

 

 

 

 

 

 

The recorder does not

No disc is inserted.

Insert a disc. (Check that the disc

 

start playback.

 

indicator in the display window is lit.)

 

 

 

 

 

 

 

 

An unplayable disc is inserted.

Insert a playable disc. (Check the disc

 

 

 

type, color system, and regional code.)

 

 

 

 

 

 

 

The disc is placed upside down.

Place the disc with the playback side

 

 

 

 

 

down.

 

 

 

 

 

 

 

The disc is not placed within the

Place the disc on the disc tray

 

 

guide.

correctly inside the guide.

 

 

 

The disc is dirty.

Clean the disc.

 

 

 

 

 

 

 

The Rating level is set.

Cancel the Rating function or change

 

 

 

the rating level.

 

 

 

 

 

 

The picture from the

The video signal from the external

You cannot connect via this recorder.

 

external input is

component is copy-protected.

Connect the component directly to

 

distorted

 

your TV.

 

 

 

 

 

 

Some channels are

Those channels are not stored in the

Restore channels. See “Program Edit”

 

skipped over when

recorder.

on page 15.

 

using CH (+/-).

 

 

 

 

 

 

The picture or sound of

Aerial or cables are loose.

Tighten connections or replace cable.

 

 

broadcasting channel is

 

(AV1, AV2, DV, etc.)

Reference

A/V input or DV IN to

 

weak or missing.

 

 

 

 

 

 

Camcorder image is not

Camcorder is off.

Turn camcorder on and operate

 

shown.

 

properly.

 

Camcorder image via

The recorder’s source is incorrect.

Use AV/INPUT to select input channel

 

 

recorder is not shown

 

 

 

 

 

 

on TV screen.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

53

Page 52 Page 54
Image 53
Page 52 Page 54
Contents HDD/DVD Recorder Risk of Electric Shock Do not Open Contents Cleaning Discs About the Symbol Display Symbol Used in this ManualIntroduction Handling DiscsRecommended recordable DVD discs Recordable and Playable DiscsRegional Code Availability of copying or moving featurePlayable Discs About the internal hard disk drive Front Panel Remote Control Battery Installation Remote ControlRemote Control Operation Connecting to the Aerial Hookup and SettingsRear Panel RF coaxial connectionVideo connection Connections to Your TVAudio Left/Right Connection Component Video connectionAmplifier Receiver Connecting to an AmplifierDigital Multi-channel sound Connecting to the AV in 1 or AV in 2 Jacks Accessory Audio/Video A/V ConnectionsConnecting a Digital Camcorder Front of the recorder Rear RecorderInitial Settings Using the Home MenuGeneral Settings Auto ProgrammingProgram Edit Program EditPower Save Mode Display ModeManual Clock Set TV AspectAudio Settings Language SettingsSet Password Lock Parental Control SettingsRating Area CodeDisc Settings Recording SettingsDisc Protect FinalizeDisc Label Displaying Disc Information on-screen General Explanation On-Screen DisplayDisplaying Information While Watching TV Buttons Operations Discs General Playback FeaturesPlayback Playback Moving to another Title HDD -RWVR If a menu screen is displayed DVD VCDMarker Search Camera Angle DVDPIP Picture in Picture HDD -RWVR 3D Surround -RWVR-RWVideo+RW -RLast Condition Memory DVD Movie List menu options Playing a DivX Movie FileDivX file requirement Playable Audio format AC3, PCM, MP2, MP3, WMAAudio CD and Music menu options Playing an Audio CD or MP3/WMA fileRandom MP3/WMA audio file requirementProgram List menu options Program Playback with Audio CD and MP3/WMA filePhoto List menu options Viewing a Jpeg FilePhoto file requirement Photo sizeRotate Images Skip ImagesView Slide Shows To listen to music while slide show simultaneouslyNaming a file on the HDD Editing a MP3/WMA, JPEG, DivX fileErasing a files/folders from the HDD Moving a files Copying a files to another media or folderRecording Disc types and recording formats, modes, and settingsAbout DVD recording About HDD recordingTimeshift HDD Basic Recording from a TV Instant Timer RecordingTo Pause the Recording Checking the Recording TimeTimer Recording Timer Recording Troubleshooting Checking Timer Recording DetailsRecording from an External Input Recording from External ComponentsRecording from DV Input TroubleshootingBefore DV dubbing Recording from a Digital CamcorderTime Slip HDD Simultaneous recording and playbackPlayback another title during recording Title List and Chapter List Menu Overview EditingAdding Chapter Markers HDD, VR Mode Original and Playlist EditingChanging Title Thumbnails Titles, Chapters and PartsAdding Additional Title/Chapters to the Playlist -RWVR Making a New PlaylistDeleting a Part HDD -RWVR Deleting an Original or Playlist Title/ChapterTime Search HDD -RWVR-RWVideo Remote control buttons for entering a nameNaming a Title Combining Two Titles Into One Sort HDDUndoing/Redoing the Last Deletion -RWVR Combining Two Chapters Into Divide One Titles Into TwoProtect a Title Moving a Playlist Chapter -RWVRHide a Chapter/Title +RW +R Before Dubbing DubbingRestrictions on copying Fast copying MaximumDubbing from DVD to HDD Dubbing from HDD to DVDOne Touch Copy DVD to HDD One Touch Copy HDD to DVDAdditional Information ReferenceOverwriting Recording +RW To finalize a disc, refer to Finalize onArea Codes Language CodesSymptom Cause Solution TroubleshootingIf you observe any of the following symptoms Resetting the recorderYou can reset the recorder as follows Specifications Victoria New South walesQueensland South AustraliaNo MFL30384253

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.
Top Page Image Contents