1. Fampidirana
This manual provides essential information for the safe and efficient operation of your NEC M551 MultiSync 55-inch 4K UHD Digital Signage Display. Please read this manual thoroughly before using the product and retain it for future reference.
The NEC M551 is designed for digital signage applications, offering a 55-inch 4K UHD (3840 x 2160) LED-backlit LCD display with HDR capabilities. Its design supports both horizontal and vertical orientation for flexible installation.

Sary 1: anoloana view of the NEC M551 MultiSync 55-inch 4K UHD Digital Signage Display. The display shows a vibrant image of a blue flower with water droplets, highlighting its 4K UHD resolution and color capabilities.
2. Information momba ny fiarovana
Always observe the following safety precautions to prevent injury and damage to the display.
- Loharano herinaratra: Connect the display only to the specified power supply.
- rivotra: Ataovy izay hahazoana rivotra ampy tsara manodidina ny fampirantiana. Aza sakanana ny fisokafan'ny rivotra.
- Fametrahana: Place the display on a stable, level surface or mount it securely according to installation guidelines. Avoid direct sunlight, heat sources, and excessive moisture.
- Fanadiovana: Disconnect power before cleaning. Use a soft, dry cloth. Avoid liquid cleaners or aerosol sprays.
- Serivisy: Do not attempt to service the display yourself. Refer all servicing to qualified service personnel.
3. Fametrahana
3.1 Unpacking the Display
- Sokafy tsara ny fonosana ary esory ny fampisehoana.
- Check for any visible damage. If damaged, contact your dealer immediately.
- Ensure all accessories are present: power cord, remote control, batteries, and documentation.
3.2 Fametrahana sy fametrahana
The NEC M551 supports both horizontal and vertical orientations. Ensure the mounting solution (e.g., wall mount, stand) is rated for the display's weight (approximately 59 lbs / 26.7 kg) and dimensions (56.3 x 36.2 x 9.8 inches).
- For wall mounting, use a VESA-compatible mount.
- Maintain sufficient space around the display for heat dissipation.
3.3 Fampifandray ny periferika
The display features various input ports for connectivity.
- Fampifandraisana herinaratra: Connect the power cord to the display's AC inlet and then to a grounded power outlet.
- Video Input: Connect your video source (e.g., media player, PC) to the display using an HDMI cable. The display supports 4K UHD resolution via HDMI.
- Fifandraisana hafa: Refer to the port labels on the display for additional connections such as USB, DisplayPort, or audio outputs, if applicable.
4. Torolàlana miasa
4.1 Mamelona/Mamono
- Herim-batana: Press the power button on the remote control or on the display's control panel.
- Mamono hery: Press the power button again. The display will enter standby mode. For complete power off, disconnect the power cord.
4.2 Fikirana Fampisehoana fototra
Use the remote control to navigate the On-Screen Display (OSD) menu.
- Safidy fampidirana: Press the "Input" button to cycle through available video sources (HDMI, DisplayPort, etc.).
- Fikirana sary: Adjust brightness, contrast, color temperature, and aspect ratio (16:9 native). The display supports High Dynamic Range (HDR).
- Fikirana feo: Adjust volume and audio output options.
- Fikirana mandroso: Explore options for digital signage features, scheduling, and network settings if applicable to your model.
4.3 Mampiasa ny Remote Control
The remote control provides access to all display functions. Ensure batteries are correctly inserted.
- Hery: Mivadika na maty ny fampisehoana.
- Menu: Manokatra ny menu OSD.
- Bokotra fitetezana: Used to move through menu options.
- Midira/OK: Manamafy ny safidy.
- Volume +/-: Ahitsio ny feo.
- Loharano: Mifidy loharano fidirana.
5. Fikojakojana
5.1 Fanadiovana ny fampisehoana
- Turn off the display and disconnect the power cord.
- Fafao moramora amin'ny lamba malefaka tsy misy loko ny efijery. Ho an'ny marika mafy loha, moramora dampen ny lamba misy rano.
- Clean the display casing misy lamba malefaka sy maina.
- Aza mampiasa: Alcohol, benzene, thinners, or abrasive cleaners, as these can damage the screen or casing.
5.2 Fikarakarana ankapobeny
- Fadio ny mametraka zavatra mavesatra eo amin'ny efijery.
- Protect the display from extreme temperatures and humidity.
- If the display will not be used for an extended period, disconnect it from the power outlet.
6. Famahana olana
Before contacting support, try the following solutions for common issues.
| OLANA | Antony mety hitranga | vahaolana |
|---|---|---|
| Tsy misy hery | Tapaka ny tariby herinaratra; simba ny fantson-jiro | Ensure power cord is securely connected; Test outlet with another device. |
| Tsy misy sary | Incorrect input source; Video cable loose or faulty; Source device off | Select correct input source via remote; Check video cable connections; Ensure source device is powered on. |
| Ratsy ny kalitaon'ny sary | Incorrect resolution; Cable quality; Display settings | Ensure source device outputs 4K UHD; Use high-quality HDMI cables; Adjust picture settings in OSD menu. |
| Tsy mandeha ny fanaraha-maso lavitra | Dead batteries; Obstruction; Incorrect aiming | Replace batteries; Remove obstructions; Point remote directly at the display's IR receiver. |
7. Famaritana
Key technical specifications for the NEC M551 MultiSync display.
- Modely: NEC M551 MultiSync
- Haben'ny efijery: 55 Inches (Diagonal Class)
- Teknolojia fampisehoana: LED-Backlit LCD
- fanapahan-kevitra: 4K UHD (3840 x 2160p)
- Aspect ratio: 16:9
- Havaozina: 60 Hz
- Endri-javatra manokana: Haavo dinamika avo (HDR)
- Fifandraisana: HDMI (multiple inputs), DisplayPort, USB (specific ports may vary)
- Lanja entana: Tokony ho 59 kilao (26.7 kg)
- Ny haben'ny vokatra (W x H x D): Manodidina ny 56.3 x 36.2 x 9.8 santimetatra (143 x 91.9 x 24.9 cm)
- Orientation: Horizontal and Vertical support
- loko: Mainty
8. Warranty & Fanohanana
8.1 Fampahalalana momba ny fiantohana
NEC provides a limited warranty for this product. The specific terms and duration of the warranty may vary by region and purchase date. Please refer to the warranty card included with your product or visit the official NEC webtranokala ho an'ny fampahalalana momba ny fiantohana amin'ny antsipiriany.
Fanamarihana: Tehirizo ny porofo momba ny fividiananao (fahazoan-dàlana na faktiora) satria takiana amin'ny fitakiana fiantohana.
8.2 Fanohanana ny mpanjifa
For technical assistance, service, or further inquiries, please contact NEC customer support.
- Fanohanana an-tserasera: Tsidiho ny NEC ofisialy webtranonkala ho an'ny FAQ, fampidinana mpamily, ary loharano fanohanana.
- Fanohanana an-telefaona: Refer to your product documentation or the NEC webtranonkala ho an'ny nomeraon'ny fifandraisana isam-paritra.
- Foibem-panompoana: Information on authorized service centers can be found on the NEC website.
When contacting support, please have your product model (M551) and serial number ready.





