1. Introduction
Thank you for purchasing the Toshiba Steam Oven Range Stone Kiln Dome ER-SD70(W). This appliance is designed to provide versatile cooking options, including steam, oven, and microwave functions, with a focus on ease of use and healthy cooking. Please read this manual thoroughly before using the appliance to ensure safe and optimal operation. Keep this manual for future reference.
This model features a 26L capacity, a wide and flat interior for easy access, and advanced heating technologies like an infrared sensor for precise temperature control and non-fry cooking capabilities.

Front view of the Toshiba Steam Oven Range ER-SD70(W) in Grand White.
2. Safety Information
Always follow basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, injury to persons, or exposure to excessive microwave energy.
- Do not attempt to operate this oven with the door open as this can result in harmful exposure to microwave energy.
- Do not place any object between the oven front face and the door or allow soil or cleaner residue to accumulate on sealing surfaces.
- Do not operate the oven if it is damaged. It is particularly important that the oven door closes properly and that there is no damage to the door (e.g., bent), hinges and latches (e.g., broken or loosened), or door seals and sealing surfaces.
- The oven should not be adjusted or repaired by anyone except properly qualified service personnel.
- Ensure the appliance is placed on a stable, level surface.
- Keep children away from the appliance during operation.
3. Setup
3.1 Unpacking
Carefully remove the oven and all materials from the carton. Check for any damage. If the oven is damaged, do not operate it and contact your dealer immediately.
3.2 Placement and Installation
Place the oven on a flat, stable surface that can support its weight. Ensure adequate ventilation around the appliance.
- Clearance Requirements: Maintain a minimum clearance of 1.5 cm (0.6 inches) on the left side, 4.5 cm (1.8 inches) on the right side, and 10 cm (3.9 inches) on the top. The back can be placed flush against a wall.
- Do not block air vents.
- Do not place the oven near heat sources or in direct sunlight.

Diagram illustrating the required clearances for installation: 1.5cm left, 4.5cm right, 10cm top, and flush at the back.
3.3 Initial Setup
- Plug the power cord into a grounded electrical outlet. The appliance operates on 100 Volts.
- Before first use, it is recommended to run the oven empty for a short period (e.g., 5-10 minutes at 200°C) to burn off any manufacturing residues and odors. Ensure the room is well-ventilated during this process.
4. Operating Instructions
4.1 Control Panel Overview
The control panel features a digital display, various function buttons, and a dial for setting time and temperature. Refer to the included instruction manual for detailed button functions.

The control panel with various cooking modes and settings.
4.2 Basic Operation
- Microwave Heating: Place food in a microwave-safe container. Select the microwave function, adjust power level and time using the dial, then press Start.
- Oven Cooking: Select the oven function. Set the desired temperature and preheat if necessary. Once preheated, place food inside and set the cooking time.
- Steam Cooking: For steam cooking, ensure the square plate is filled with water as instructed in the recipe book. Place food on the plate and select the steam function.
4.3 Key Features
Infrared Sensor for Precise Temperature Control
The built-in infrared sensor allows for precise temperature adjustments, ensuring food is heated to your preferred temperature. This is ideal for tasks like softening butter, melting chocolate, or even slightly thawing ice cream.

Examples of temperature control using the infrared sensor, from -10°C to 90°C.
Non-Fry Cooking
Enjoy healthier versions of your favorite fried foods without using oil. The non-fry cooking function circulates hot air to achieve a crispy texture.

Examples of dishes prepared with the non-fry cooking function, such as fried chicken and shrimp.
Wide & Flat Interior
The spacious 26L wide and flat interior allows for easy placement and removal of dishes, accommodating larger plates and multiple items simultaneously. The door opening is 39cm wide.

Illustration of the wide and flat interior, highlighting the 39cm opening for easy access.
Automatic Cooking Menus
The oven includes various automatic menus for common dishes, simplifying the cooking process. Simply select the desired menu, and the oven will automatically adjust time and temperature.

Examples of automatic cooking functions for fluffy bread and crispy reheating.
5. Maintenance and Cleaning
Regular cleaning and maintenance will ensure the longevity and optimal performance of your oven.
5.1 Interior Cleaning
- Wipe the interior with a damp cloth and mild detergent after each use, especially after cooking greasy or steamy dishes.
- For stubborn stains, use a non-abrasive cleaner specifically designed for microwave ovens.
5.2 Exterior Cleaning
Clean the exterior surfaces with a soft, damp cloth. Do not use abrasive cleaners or solvents.
5.3 Removable Water Tray
The water tray used for steam functions is removable for easy cleaning. Detach it and wash with warm, soapy water. Ensure it is completely dry before reattaching.

The wide water tray can be easily removed for thorough cleaning.
5.4 Deodorization Mode
To remove lingering odors from the oven interior, use the deodorization mode. Refer to the instruction manual for specific steps to activate this function.

The control panel showing the deodorization mode option for odor removal.
6. Troubleshooting
If you encounter any issues with your oven, please refer to the table below for common problems and their solutions. If the problem persists, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Oven does not start | Power cord not plugged in; Door not closed properly; Fuse blown or circuit breaker tripped. | Ensure power cord is securely plugged in; Close the door firmly; Check household fuse/circuit breaker. |
| Food is not cooking evenly | Incorrect power level/time setting; Food not stirred/rotated. | Adjust power and time; Stir or rotate food halfway through cooking. |
| Steam function not working | Water tray empty or improperly placed. | Fill water tray with water; Ensure tray is correctly inserted. |
| Unusual odors | Food residue inside; New appliance odor. | Clean oven interior thoroughly; Use deodorization mode. |
7. Specifications
| Feature | Specification |
|---|---|
| Manufacturer | Toshiba (TOSHIBA) |
| Model Number | ER-SD70(W) |
| Color | Grand White |
| Capacity | 26 Liters |
| Wattage | 1000 W |
| Voltage | 100 Volts |
| Product Dimensions (D x W x H) | 39 cm x 48 cm x 35 cm |
| Package Dimensions | 51 x 47 x 40 cm |
| Product Weight | 14 Kilograms |
| Package Weight | 17.47 Kilograms |
| Special Features | Automatic Cooking |
| First Available Date | July 1, 2018 |
8. Warranty and Support
8.1 Manufacturer's Warranty
This product comes with a manufacturer's warranty of one year from the date of delivery. A delivery receipt is required for warranty claims. The warranty is valid for use within Japan only.
8.2 Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Toshiba customer support. Refer to the contact information provided in your product packaging or visit the official Toshiba website for the most up-to-date support details.
It is recommended to have your model number (ER-SD70(W)) and purchase date ready when contacting support.