Dr. J HI-04 - User Manual

Dr. J HI-04
Mini Home Projector
Anastasiya Dvuzhylov
Quick Start & Troubleshooting Guide

Summary

Important Information

Safety and Handling Guidelines

Covers ventilation, fire/shock prevention, water exposure, and eye safety warnings.

Customer Support Contact

Email address for assistance with projector issues.

Introduction to the Projector

Product Overview and Usage Recommendations

Description of the portable home projector and its best use cases.

Product Overview

Projector Components and Ports

Identification of all buttons, inputs, and outputs on the device.

Feature Overview

Key Features and Specifications

Highlights resolution, projection size, keystone adjustment, and lamp life.

Projection Settings

Mounting Orientations

Explains front, rear, front ceiling, and rear ceiling projection modes.

Installation

Setup and Power Connection

Guidance on mounting, non-mounted setup, and connecting the power cable.

Connecting to Devices

Connecting Computers and Gaming Consoles

Instructions for connecting via HDMI, including potential adaptors and audio settings.

Connecting Phones, Tablets, and USBs

Steps for connecting mobile devices and USB storage for playback.

Connecting Other Devices

Methods for connecting various devices using HDMI, VGA, or USB.

Image Output Adjustment

Focus and Keystone Adjustment

How to use adjustment wheels to sharpen the image and correct distortion.

Menu Settings

Image Adjustments

Details on preset and custom picture modes for image output.

Sound Adjustments

Explanation of preset and custom sound modes for optimal audio.

Troubleshooting Common Issues

Picture Quality Problems

Solutions for color issues, blurriness, and fuzzy text.

Audio and Fan Noise

Troubleshooting no/low sound and noisy projector fan.

Overview

1. Function Description
2. Usage Features
3. Installation and Positioning
4. Image Output Adjustment
5. Menu Settings
6. Troubleshooting
7. Maintenance Features
8. Air Circulation
9. Lens Care
10. General Safety
11. Lamp Life

The Dr. J HI-04 Mini Home Projector is a portable device designed for home entertainment. It allows users to project images from various sources onto a screen or wall, making it suitable for activities like streaming sports games indoors or hosting outdoor movie nights. This projector is considered a budget model and is primarily intended for casual home use rather than professional settings.

Function Description

The core function of the Dr. J HI-04 is to project visual content from connected devices. It supports a variety of input sources, including phones, tablets, computers (both Windows and Mac), gaming consoles (such as Xbox), DVD players, Amazon Firesticks, and USB drives. The projector features a 1280x720 resolution, which helps in producing crisp images for an enhanced viewing experience.

For connecting to computers, users can utilize an HDMI cable by plugging it into the computer's HDMI port and then into the projector's HDMI port. If a computer lacks an HDMI port, an adapter can be used. For devices that do not support audio via VGA cables, a 3.5mm audio cable can be used to connect the device's audio output to the projector. When connecting to phones or tablets, an HDMI to lightning cable or USB-C adapter (not included) is required. Gaming consoles can also be connected via an HDMI cable. For Xbox users, specific audio settings (Digital Audio Output set to PCM) are recommended to ensure proper sound. USB drives and memory cards can be connected directly to the projector's USB port, or via an adapter for memory cards, allowing users to view content stored on them. The projector offers an "Input Source Button" to select the desired input, such as HDMI or DMP (for USB/Memory Card).

The projection size is adjustable, ranging from 32 to 170 inches, providing flexibility for different viewing environments. The projector also includes a +/- 15-degree keystone adjustment function, which helps correct distorted images when the projector is not positioned perfectly straight on.

Usage Features

The Dr. J HI-04 offers several usage features to enhance the viewing experience:

Installation and Positioning:

The projector can be set up in various ways. For non-mounted use, it should be placed on a flat, stable surface, pointing directly at the screen or wall. Mounting the projector to the ceiling or a tripod is optional and requires a separate mount. There are four projection settings based on positioning:

• Front Projection: This is the default setting, where the projector is placed on a table or shelf in front of the screen, similar to a traditional projector.
• Rear Projection: The projector is placed behind a translucent screen, projecting a mirrored image. To correct this, users can access the menu settings (Menu > Settings > Picture > Projection Mode) and select "FLIP."
• Front Ceiling Projection: Intended for users who mount the projector upside-down to the ceiling, in front of a screen. The image output will appear upside-down. To correct this, users should select "front" in the Projection Mode settings (Menu > Settings > Picture > Projection mode).
• Rear Ceiling Projection: For users who mount the projector upside-down to the ceiling, behind a translucent screen. The image will appear both upside-down and mirrored. To correct this, users need to select both "front" and "flip" in the Projection Mode settings.

Image Output Adjustment:

• Focus: The focus adjustment wheel allows users to sharpen or blur the image based on the projector's distance from the screen or wall. Turning the wheel left or right adjusts the sharpness.
• Keystone: The keystone adjustment wheel is used to correct the shape of the projected image if it appears distorted due to the projector not being perfectly straight on. It helps make the image rectangular. The projector has a limited keystone adjustment of +/- 15 degrees, suitable for correcting slightly skewed outputs.

Menu Settings:

The projector provides a menu for adjusting image and sound settings:

• Image Adjustments: Accessible via Menu > Picture > Picture Mode. There are three pre-set picture modes:
  • Vivid: Offers rich, high-contrast colors.
  • Medium: Provides regular toned colors.
  • Soft: Produces duller, lower-contrast colors. These pre-sets are non-customizable, meaning their contrast, brightness, color, and sharpness cannot be altered. Additionally, there is one custom picture mode:
  • User: Allows users to customize image output. To adjust contrast, brightness, color, and sharpness, users can select Menu > Picture > Picture mode > User and use sliders to make adjustments.
• Sound Adjustments: Accessible via Menu > Sound > Sound Mode. There are four pre-set sound modes:
  • Medium: The default sound setting.
  • Movie: Optimized for movies and TV shows.
  • Music: Optimized for music-rich content like concerts.
  • Sports: Optimized for projecting sporting events. These pre-sets are also non-customizable regarding treble and bass. A custom sound mode is available:
  • User: Allows users to adjust treble and bass. To do so, select Menu > Sound > Sound mode > User and use sliders for adjustments.

Troubleshooting:

The manual provides guidance for common issues:

• Color Looks Off: If colors appear incorrect (e.g., reds look pink), users can adjust brightness, contrast, color, and saturation by going to Settings > Picture > Picture mode - User.
• Blurry/Bad Picture Quality: For blurry or fuzzy pictures, adjusting the focus wheel can increase sharpness. If the picture looks washed out or too dark, users can adjust brightness, contrast, color, and saturation via Settings > Picture > Picture mode - User.
• Words Appear Fuzzy: The projector is not intended for professional use, so output quality for documents like PowerPoints may not be high enough. However, subtitles should be readable. Adjusting the focus can improve the clarity of words.
• No or Low Sound: If connecting with a VGA cable, a 3.5mm headphone line is needed for device audio. For HDMI, USB, or other connections, users are advised to contact support for an update to restore sound for both internal and external speakers.
• Noisy Fan: The fan noise is inherent to prevent overheating. If the fan drowns out the audio, users are directed to the "No or Low Sound" section for potential solutions.

Maintenance Features

The manual emphasizes several important maintenance and safety guidelines:

Air Circulation:

The projector has ventilation openings to exhaust hot air. It is crucial not to place anything flammable near these openings or cover them. The projector should always be in a well-ventilated area, and confined spaces should be avoided to prevent overheating.

Lens Care:

Users are warned not to look directly into the projector lens when it is on, as the bright light can cause eye damage.

General Safety:

To prevent electric shock, users should not open the projector unit body, as there are no user-serviceable parts inside. The projector should not be exposed to rain or water to prevent fire or shock. If used outdoors, it should be stored in a dry area and not left unattended for prolonged periods.

Lamp Life:

The projector boasts a lamp life of 50,000 hours, indicating a long operational lifespan for the light source under normal usage conditions.

For any support needs or issues that cannot be resolved through troubleshooting, users are encouraged to contact drjprofessional@163.com.

Dr. J HI-04 Specifications

General

Weight	2.5 kg
Lamp Life	50, 000 Hours
Connectivity	HDMI, USB, VGA, AV
Aspect Ratio	16:9
Keystone Correction	±15°
Speaker	5W