Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your NEC P502HL series projector lens. This high-quality lens is designed to deliver clear and vibrant images for compatible NEC projectors, including models CR5450HL, CE5500HL, CR-5450WL, P525WL, P502H, and P502W. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.
Specifications
| Feature | Specification |
|---|---|
| Zoom Ratio | 1.7X |
| Aperture Range | F = 2.0-2 |
| Projection Ratio | 1.2-2:1 |
| Actual Focal Length | f = 18.2-31 |
| Fixed Type | Hook |
| Use | Window |
| Origin | Mainland China |
Note: Specifications are subject to change without prior notice for product improvement.
Setup and Installation
Proper installation of the projector lens is crucial for optimal performance. Always handle the lens with care to avoid damage to the optical elements.
- Power Off Projector: Before beginning, ensure the projector is completely powered off and disconnected from the power source. Allow it to cool down if it has been in operation.
- Remove Existing Lens (if applicable): If replacing an existing lens, carefully follow your projector's manual for instructions on how to safely remove it. Typically, this involves unlocking a release mechanism and gently twisting or pulling the lens out.
- Prepare New Lens: Remove the protective caps from both ends of the new projector lens. Avoid touching the glass surfaces.
Figure 1: Side view of the projector lens, showing its general form factor. - Install New Lens: Align the new lens with the lens mount on the projector. Gently insert the lens and twist or push it until it locks securely into place. Refer to your projector's specific instructions for the exact locking mechanism. Ensure the lens is firmly seated and does not wobble.
Figure 2: Front view of the projector lens, highlighting the optical elements. - Power On and Test: Reconnect the projector to the power source and power it on. Project an image to verify proper installation.
Operating the Lens
Once installed, the projector lens allows for adjustment of focus and zoom to achieve the desired image size and clarity.
- Zoom Adjustment: Rotate the zoom ring on the lens to adjust the size of the projected image. Turn clockwise to enlarge the image and counter-clockwise to reduce it.
Figure 3: Side view of the lens, indicating the location of the adjustment rings. - Focus Adjustment: After adjusting the zoom, rotate the focus ring until the projected image appears sharp and clear. Make fine adjustments until the entire image is in focus.
For detailed image adjustments such as keystone correction or lens shift, refer to your projector's user manual.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your projector lens.
- Cleaning the Lens:
- Use a soft, lint-free cloth specifically designed for optical lenses.
- Gently wipe the lens surface to remove dust or smudges. For stubborn marks, use a small amount of lens cleaning solution applied to the cloth, not directly to the lens.
- Never use abrasive materials, harsh chemicals, or excessive force, as this can scratch or damage the lens coating.
- Storage: When not in use, always place the protective caps on both ends of the lens to prevent dust accumulation and accidental damage. Store the lens in a clean, dry, and temperature-controlled environment.
Troubleshooting
If you encounter issues with your projector lens, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Image is blurry/out of focus | Incorrect focus adjustment | Rotate the focus ring until the image is sharp. |
| Image size is incorrect | Incorrect zoom adjustment | Rotate the zoom ring to achieve the desired image size. |
| Dust spots visible on projected image | Dust on the lens surface | Clean the lens carefully using a lens cleaning kit. |
| Lens not securely attached | Improper installation | Ensure the lens is fully inserted and locked into the projector's lens mount. |
If the problem persists after trying these solutions, please consult your projector's user manual or contact customer support.
User Tips
- Optimal Environment: For best image quality, operate your projector and lens in a clean, dust-free environment.
- Gentle Handling: Always handle the lens by its barrel, avoiding direct contact with the glass elements.
- Compatibility Check: Double-check the compatibility of this lens with your specific projector model before installation to prevent damage.
Warranty and Support
This product is covered by a standard manufacturer's warranty. For specific warranty terms, duration, and support options, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for warranty claims.
For technical assistance or inquiries, please reach out to the customer support channel provided by your retailer or the manufacturer.
