NEC NP03CM - User Manual

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Portable Projector

NP03CM Ceiling Mount Unit

Installation and Adjustment Manual

Thank you for your purchase of the NEC portable projector ceiling mount unit.

Please read this installation and adjustment manual carefully to ensure proper use.

Special skills are required for the installation of the portable projector.

This work should never be performed by the customer.

To the Dealer and the Installer

For the safety of the customer, we ask that the installation work be started

after careful attention is paid to the strength of the mounting location to be

sure it will withstand the weight of the portable projector and mounting

hardware.

Printed in Japan

NP03CM-0604K-02

CONTENTS

Heed the Following ....................................................................................2

Preparation ..................................................................................................4

List of Packaged Parts ......................................................................................4

Required Tools...................................................................................................4

Names of the Parts ............................................................................................4

Dimensions ........................................................................................................4

Guide to Screen Size and Projector Mounting Position..........................5

Screen Size and Projection Distance

(VT580/VT480/VT57/VT595/VT590/VT491/VT490/VT59)

........5

Screen Size and Projection Distance

(VT48/VT49)

................................................................6

Screen Size and Projection Distance

(VT695)

......................................................................7

Screen Size Conversion Table .........................................................................8

Mounting the Projector...............................................................................9

Replacing the Lamp ..................................................................................12

Adjustment of the Projection Angle ........................................................13

Distortion Adjustment .....................................................................................13

Fine Adjustment...............................................................................................15

Specifications............................................................................................15

PRINTED WITH

SOY INK

Printed on recycled paper.

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This document describes the NEC NP03CM Ceiling Mount Unit, an accessory designed to securely install NEC portable projectors onto a ceiling. The primary function of this unit is to provide a stable and adjustable platform for ceiling-mounted projection, allowing for optimal image alignment and positioning. It is intended for use by qualified and licensed installers due to the specialized skills required for its installation.

Function Description

The NP03CM Ceiling Mount Unit serves as a crucial interface between a portable projector and a ceiling structure. It consists of a fixed ceiling part that attaches to the ceiling and a projector mounting adapter that secures the projector. This two-part design allows for both initial installation and subsequent adjustments to the projection angle. The unit facilitates the precise positioning of the projector to achieve a clear, undistorted image on a projection screen. It is engineered to support the combined weight of the projector and the mounting unit itself for extended periods, even withstanding external forces like earthquakes, provided it is installed correctly. The design also incorporates mechanisms for adjusting the projection angle in multiple axes, which is essential for correcting image distortion and aligning the image with the screen.

Usage Features

The NP03CM Ceiling Mount Unit offers several features that enhance its usability and the quality of the projected image:

Adjustable Projection Angle: A key feature is its ability to adjust the projection angle. The unit allows for up-down, left-right, and inclination angle adjustments, each with a range of +/-10 degrees. This flexibility is critical for fine-tuning the image position and shape to perfectly fit the projection screen, especially when the projector cannot be mounted directly perpendicular to the screen.
Distortion Adjustment: Before fine-tuning, the unit allows for an initial "distortion adjustment." This involves adjusting the left-right, up-down, and inclination angles to make the projected image rectangular. This step ensures that any keystone or other geometric distortions are minimized, even if the image temporarily extends beyond the screen boundaries.
Fine Adjustment: Following distortion adjustment, a "fine adjustment" step allows for precise alignment. This involves loosening the same screws used for distortion adjustment and carefully adjusting the angles until the projected image perfectly coincides with the screen. This two-stage adjustment process ensures both a geometrically correct and precisely positioned image.
Secure Mounting Mechanism: The projector mounting adapter slides onto a pin on the fixed ceiling part, providing a secure temporary suspension before final fastening. This design ensures that the projector is held in place during the installation process, reducing the risk of accidental drops. Once positioned, four M5 screws are used to temporarily fasten the adapter, which are then firmly tightened after all angle adjustments are complete.
Lamp Replacement Access: The design of the projector mounting adapter facilitates lamp replacement without requiring complete removal of the projector from the ceiling mount. By removing one screw from the front panel, the adapter can be opened, providing access to the projector's lamp compartment. This feature simplifies maintenance and reduces downtime.
Compatibility with Various Projectors: While designed for NEC portable projectors, the manual references specific projector models (e.g., VT580/VT480/VT58/VT57/VT595/VT590/VT491/VT490/VT59, VT48/VT49, VT695) for screen size and projection distance guidance, indicating its broad applicability within the NEC portable projector line.
Installation Flexibility: The manual provides installation examples for both wood and concrete ceiling constructions, detailing the appropriate hardware (M8 bolts, anchor nuts, washers) for each. This ensures that the mount can be securely installed in a variety of structural environments.
Screen Size and Projection Distance Guidance: Comprehensive diagrams and tables are provided to guide installers in determining the optimal projection distance for various screen sizes and projector models. This helps in planning the installation location to achieve desired image dimensions and quality, taking into account the projector's zoom capabilities (wide angle to telephoto).
Safety Warnings and Precautions: The manual emphasizes safety throughout, with clear warnings about proper installation techniques, the importance of using specified hardware, and the need to ensure the mounting location's structural integrity. It also highlights precautions against obstructing ventilation, installing in unsuitable environments (humid, dusty, vibrating, or near heat sources), and the risks associated with improper handling during installation and maintenance.

Maintenance Features

The NP03CM Ceiling Mount Unit is designed with certain maintenance considerations in mind, primarily focusing on lamp replacement:

Simplified Lamp Replacement: The mounting adapter allows for the projector to remain attached to the ceiling mount during lamp replacement. To access the lamp, one screw on the front face of the projector mounting adapter is removed, allowing the adapter to open. This eliminates the need to fully detach and re-mount the projector, streamlining the maintenance process.
Safety Protocols for Lamp Replacement: The manual outlines critical safety steps for lamp replacement, including switching off power, waiting for cooling fans to stop, disconnecting the power plug, and allowing approximately 60 minutes for the lamp to cool down before handling. These steps are crucial to prevent burns from the high temperature of the lamp and ensure safe operation.
Guidance for Reassembly: After lamp replacement, the manual instructs users to follow the reverse procedure to fix the projector mounting adapter back in place, ensuring the projector is securely re-mounted.
Warning Against Excessive Force: During lamp replacement, a warning is issued against exerting excessive force on the projector, as this could lead to the projector falling and causing injury. This highlights the importance of careful handling during maintenance.
Post-Adjustment Security Check: After any adjustments to the projection angle, the manual advises checking that all parts are fixed securely. This is a crucial maintenance step to ensure the long-term stability and safety of the ceiling-mounted projector.

In summary, the NEC NP03CM Ceiling Mount Unit is a robust and adjustable solution for ceiling-mounting portable projectors, offering precise image alignment, secure installation, and user-friendly lamp replacement procedures, all while prioritizing safety.