Problems and Solutions

Problem

Symptom

Solution

No power (cont’d)

Power supply

Any of the following conditions

malfunction

could occur:

 

Front panel lamps out, diskette

 

and/or hard drives do not spin,

 

monitor blank, interface ports not

 

working, and keyboard lamp out

 

and/or cannot input from keyboard.

Operating system

Intermittent beeping at power-on.

does not boot

Computer beeps more than once

 

and is unable to complete boot-up.

“Invalid Configuration” message displayed.

Computer halts during loading sequence.

4. Check +5 and +12 power supply voltages. Measure voltages with system board installed.

5. Replace the power switch assembly.

6. Replace the power supply.

7. Replace the system board.

1. Perform steps 1 through 4 listed in this table under No Power.

2. Check power supply voltages. Voltages should be measured with a load on them (system board plugged in).

3. Replace the power supply.

1. Check system configuration (see Section 2).

2. Check all jumper settings and verify that drives are enabled (see Section 2).

3. Reseat DIMMs and option boards in their connectors. Inspect system board for foreign objects such as paper clips.

4. Remove option boards and reboot.

5. Replace system board.

1. Press F2 to run Setup and correct the parameters.

2. Replace the CMOS battery (see Section 3) if the date and time must be set each time the computer is powered on.

1. Power the computer off. Check for proper jumper settings (see Section 2), then power-on the computer.

2. Check condition of selected bootload device (diskette, disc, or hard disk) for bad boot track or incorrect OS files.

3. Try booting OS from diskette or disc, or recopy OS files onto hard disk.

4. Verify correct hard disk is selected.

Troubleshooting 7-7

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NEC VT 300i manual And/or cannot input from keyboard

VT 300i specifications

The NEC VT 300i is a versatile and compact LCD projector designed for educational environments and business presentations. With its impressive combination of features and user-friendly design, the VT 300i has made a mark as a reliable choice for professionals and educators alike.

One of the standout features of the VT 300i is its brightness. With a robust output of up to 3,000 ANSI lumens, the projector ensures that images are clear and vivid, even in well-lit rooms. This brightness level allows users to deliver impactful presentations without the concern of image washout due to ambient light conditions. Coupled with a high contrast ratio of 400:1, users can expect sharp, detailed images that enhance the overall viewing experience.

The VT 300i showcases advanced DLP projection technology, which is known for producing sharp images with excellent color accuracy. The inclusion of NEC’s proprietary Intelligent Auto Setup feature allows the projector to adjust to various input sources automatically, making setup quick and hassle-free. This ensures that even those who may not be tech-savvy can operate the device with ease.

Another notable characteristic is the VT 300i’s portability. Weighing in at a little over 5 pounds and featuring a compact design, the projector is easy to transport between different locations. This portability is further enhanced by its integrated carrying handle and durable casing, making it suitable for frequent travel.

The connectivity options of the VT 300i also cater to modern technology needs. It includes multiple input terminals, such as HDMI, VGA, and USB, enabling seamless integration with various devices like laptops, tablets, and other media players. Additionally, it supports both wired and wireless presentations, making it versatile for different presentation settings.

User-friendliness extends to the maintenance aspect as well. The VT 300i incorporates an easily accessible filter and lamp compartment, simplifying the process of replacements and ensuring minimal downtime. With a lamp life of up to 5,000 hours in eco mode, it offers longevity and cost-effectiveness.

In conclusion, the NEC VT 300i stands out with its combination of brightness, advanced projection technology, and user-friendly features. Whether in an educational setting or a business meeting, it offers reliability and quality, making it a popular choice for users seeking a competent and portable projector.