1. Introduction
This manual provides essential instructions for the setup, operation, maintenance, and troubleshooting of your Hitachi 55RH1 55-inch UHD HDR Roku Smart LED TV. Please read this manual thoroughly before using your television to ensure proper and safe operation. Keep this manual for future reference.
2. Safety Information
Always observe the following safety precautions to prevent electric shock, fire, or damage to the television.
- Do not expose the TV to rain or moisture.
- Do not open the TV cabinet. Refer all servicing to qualified service personnel.
- Ensure proper ventilation. Do not block ventilation openings.
- Protect the power cord from being walked on or pinched.
- Unplug the TV during lightning storms or when unused for long periods.
- Use only attachments/accessories specified by the manufacturer.
3. Package Contents
Verify that all items listed below are included in your package:
- Hitachi 55RH1 55-inch UHD HDR Roku Smart LED TV
- Remote Control
- Power Cable
- TV Stands (2) and Screws
- Quick Start Guide (not included in this digital manual)

Figure 3.1: Hitachi 55RH1 TV and included accessories.
4. Setup
4.1 Unpacking and Placement
Carefully remove the TV from its packaging. It is recommended that two people handle the TV due to its size. Place the TV on a stable, flat surface or prepare for wall mounting.
4.2 Stand Installation (Optional)
If not wall-mounting, attach the two TV stands to the bottom of the television using the provided screws. Ensure the stands are securely fastened.
4.3 Connecting Devices
Connect your external devices (e.g., cable box, Blu-ray player, gaming console) to the TV's input ports. The Hitachi 55RH1 features multiple HDMI ports for digital connections and an antenna input for over-the-air broadcasts.
- HDMI Ports: For high-definition audio and video devices.
- Antenna/Cable Input: For connecting an antenna or cable TV feed.
- Power Input: Connect the power cable to the TV and then to a wall outlet.

Figure 4.1: Rear panel connections.
4.4 Initial Power On and Roku OS Setup
After connecting all necessary cables, plug the TV into a power outlet. Press the power button on the remote control or on the TV. Follow the on-screen instructions to complete the initial setup of the Roku OS, which includes:
- Language Selection: Choose your preferred language.
- Network Connection: Connect to your home Wi-Fi network.
- Roku Account Setup: Create a new Roku account or sign in to an existing one. This is required to access streaming channels.
- Channel Scan: Scan for available over-the-air channels if an antenna is connected.
5. Operating the TV
5.1 Remote Control Functions
The included remote control provides access to all TV functions. Key buttons include:
- Power: Turns the TV on or off.
- Home: Returns to the Roku Home screen.
- Directional Pad (D-Pad) and OK: Navigates menus and selects options.
- Back: Returns to the previous screen.
- Volume Up/Down: Adjusts audio volume.
- Mute: Mutes or unmutes audio.
- Channel Up/Down: Changes channels (for antenna/cable).
- Instant Replay: Replays the last few seconds of content.
- Star (*): Accesses options for the selected item.
- Dedicated Channel Buttons: Quick access to popular streaming services.
5.2 Roku Home Screen Navigation
The Roku Home screen is your central hub for all content. It displays your installed streaming channels, input sources (HDMI, Antenna), and settings. Use the D-Pad on your remote to navigate and the OK button to select.
5.3 Input Selection
To switch between connected devices or the antenna, select the corresponding input tile on the Roku Home screen. You can rename inputs for easier identification through the settings menu.
5.4 Picture and Sound Settings
Access picture and sound settings by pressing the Star (*) button on your remote while watching content or by navigating to the 'Settings' menu on the Home screen. Adjust settings such as:
- Picture Mode: Standard, Movie, Vivid, Custom.
- Brightness, Contrast, Color: Fine-tune image quality.
- Sound Mode: Standard, Speech, Music, Custom.
- Volume Mode: Leveling, Night.
6. Maintenance
6.1 Cleaning the TV
Before cleaning, unplug the power cord from the wall outlet.
- Screen: Gently wipe the screen with a soft, lint-free cloth. For stubborn marks, lightly dampen the cloth with water or a screen cleaner specifically designed for TVs. Do not spray cleaner directly onto the screen.
- Cabinet: Wipe the cabinet and stand with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
6.2 Software Updates
Your Hitachi Roku TV automatically checks for software updates when connected to the internet. To manually check for updates:
- Go to the Roku Home screen.
- Navigate to Settings > System > System update.
- Select Check Now.
7. Troubleshooting
If you encounter issues with your TV, refer to the following common problems and solutions:
| Problem | Possible Solution |
|---|---|
| No power | Ensure the power cable is securely connected to the TV and a working electrical outlet. Try a different outlet. |
| No picture, but sound is present | Check the input source. Ensure the connected device is powered on and functioning correctly. Try a different HDMI cable. |
| No sound, but picture is present | Check the volume level and ensure the TV is not muted. Verify audio output settings. |
| Remote control not working | Replace the batteries in the remote. Ensure there are no obstructions between the remote and the TV. |
| Cannot connect to Wi-Fi | Ensure your router is on and working. Re-enter the Wi-Fi password. Try restarting your router and the TV. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | 55RH1 |
| Screen Size | 55 Inches |
| Display Technology | LED |
| Resolution | 4K UHD (3840 x 2160) |
| Refresh Rate | 60 Hz |
| HDR Format Supported | HDR10 |
| Operating System | Roku OS |
| Connectivity Technology | Wireless (Wi-Fi) |
| Total Number of HDMI Ports | 3 |
| Audio Output Mode | DTS Surround Sound |
| VESA Mount Standard | 200 x 200 mm |
| Item Weight | 32.6 Pounds |
| Included Components | Power Cable, Remote Control |
9. Warranty Information
The Hitachi 55RH1 TV comes with a 1-year warranty covering parts and labor from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or external factors. Please retain your proof of purchase for warranty claims.
10. Customer Support
For further assistance, technical support, or warranty inquiries, please refer to the contact information provided with your product documentation or visit the official Hitachi support website. When contacting support, please have your TV model number (55RH1) and serial number ready.





