1. Introduction
The ROBOTIME AM305 DIY Music Box Machinarium is a wooden puzzle kit designed for assembly, resulting in a functional music box. This kit features laser-cut wooden pieces for precise fitting and realistic details. Once assembled, the music box plays the tune "Over the Rainbow" using an eighteen-tone serinette movement with steel components imported from Japan for clear sound. The mechanism includes vertical roller movement and bidirectional counter-rotating movement, providing an engaging assembly and operational experience.

Image 1: Front view of the ROBOTIME AM305 DIY Music Box Machinarium packaging, illustrating the product and key features.
2. Package Contents
Upon opening the ROBOTIME AM305 DIY Music Box Machinarium package, verify that all components are present and undamaged. The kit includes:
- 56 precisely laser-cut wooden pieces for assembly.
- Necessary tools for construction.
- English instruction manual for detailed assembly guidance.
- Music box mechanism with Japanese steel components.

Image 2: Side view of the ROBOTIME AM305 DIY Music Box Machinarium packaging, detailing the contents and design.
3. Setup and Assembly
The ROBOTIME AM305 is a DIY kit requiring self-assembly. Follow the included English instruction manual carefully for optimal results. Assembly typically involves:
- Preparation: Unpack all components and lay them out on a clean, flat surface. Identify each wooden piece according to the manual's diagrams.
- Component Removal: Gently detach the laser-cut wooden pieces from their frames. Use caution to avoid breakage.
- Step-by-Step Assembly: Follow the numbered steps in the instruction manual. Each step will guide you on how to connect specific pieces. Ensure pieces fit snugly.
- Mechanism Integration: Install the music box mechanism as instructed. Pay close attention to the orientation and connection points to ensure proper function.
- Final Touches: Complete the decorative elements and ensure all moving parts operate smoothly without obstruction.
No batteries are required for operation. The assembly process is designed to enhance concentration skills.
4. Operating Instructions
Once fully assembled, the ROBOTIME AM305 Music Box is ready for operation:
- Winding: Locate the winding key or mechanism on the music box. Gently turn the key clockwise until you feel a slight resistance. Do not overwind, as this can damage the internal mechanism.
- Playback: Release the winding key or activate the playback switch (if present). The music box will begin to play the tune "Over the Rainbow."
- Enjoyment: Observe the vertical roller movement and bidirectional counter-rotating movement as the music plays.
5. Maintenance
To ensure the longevity and proper function of your ROBOTIME AM305 Music Box, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to gently wipe the wooden surfaces. Avoid using abrasive cleaners or excessive moisture, which can damage the wood.
- Storage: Store the music box in a dry environment, away from direct sunlight and extreme temperature fluctuations, to prevent warping or damage to the wood and mechanism.
- Handling: Handle the music box with care. Avoid dropping it or subjecting it to strong impacts, which could dislodge or break delicate components.
- Mechanism Care: The internal mechanism is designed to be maintenance-free. Do not attempt to lubricate or disassemble the music movement unless specifically instructed by the manufacturer.
6. Troubleshooting
If you encounter issues with your ROBOTIME AM305 Music Box, consider the following:
- Music Not Playing: Ensure the music box has been properly wound. Check if any internal components are obstructed or dislodged.
- Parts Not Fitting: During assembly, if pieces do not fit, re-check the instruction manual to ensure you are using the correct pieces for the current step and that they are oriented correctly. Do not force pieces together.
- Winding Key Stuck/Loose: If the winding key feels stuck or too loose, stop immediately. Do not force it. This may indicate an issue with the internal spring or mechanism.
- Damaged Pieces: If any wooden pieces are damaged during assembly, contact ROBOTIME customer support for possible replacement parts.
7. Specifications
| Model Number | AM305 (also referred to as R305) |
| Number of Pieces | 56 Wood pieces |
| Assembled Dimensions | 75 x 85 x 125 mm (Product Dimensions: 16 x 23.62 x 6.6 cm; 400 g for packaging) |
| Material Type | Wood |
| Music Tune | Over the Rainbow |
| Movement Type | Eighteen tone serinette movement, Vertical roller movement, Bidirectional counter rotating movement |
| Steel Origin | Imported from Japan |
| Recommended Age | 5 - 18 years (Manufacturer recommended) |
| Educational Objective | Concentration Skill |
| Assembly Required | Yes |
| Batteries Required | No |

Image 3: Size comparison of the ROBOTIME AM305 DIY Music Box Machinarium packaging.
8. Safety Information
WARNING: CHOKING HAZARD - Small parts. Not for Children under 3 years.
This product contains small components that may pose a choking hazard. Adult supervision is recommended during assembly and operation, especially when children are present. Keep all small parts out of reach of young children.
9. Warranty and Support
For warranty information, technical support, or inquiries regarding replacement parts, please refer to the documentation included with your product or visit the official ROBOTIME website. Contact details for customer service are typically provided by the manufacturer.





