1. Introduction
This manual provides comprehensive instructions for the AIDITIYMI RM-AAU104 replacement remote control. This remote is designed to function as a direct replacement for the original Sony AV Receiver remote, offering seamless control without the need for complex programming or pairing. It is compatible with a range of Sony AV Receiver models, ensuring a straightforward user experience.
The AIDITIYMI RM-AAU104 remote control is an infrared (IR) device, meaning it communicates with your AV receiver using light signals. Ensure a clear line of sight between the remote and the receiver for optimal performance.

Image 1.1: Front view of the AIDITIYMI RM-AAU104 replacement remote control, showing all buttons and layout.
2. Setup
The AIDITIYMI RM-AAU104 remote control requires no programming or pairing. Simply install the batteries, and it will be ready for use with your compatible Sony AV Receiver.
2.1 Battery Installation
- Locate the battery compartment on the back of the remote control.
- Slide the battery compartment cover downwards or press the latch and lift to open.
- Insert two (2) new 1.5V AA alkaline batteries, ensuring the positive (+) and negative (-) terminals match the diagrams inside the compartment.
- Replace the battery compartment cover, ensuring it clicks securely into place.

Image 2.1: Back view of the remote control with the battery compartment open, showing where to insert AA batteries.
Once batteries are installed, the remote is ready to operate your Sony AV Receiver.
3. Operating Instructions
The RM-AAU104 remote control provides full functionality for your compatible Sony AV Receiver. Point the remote directly at the AV receiver's IR sensor for reliable operation.
3.1 Basic Functions
- Power (I/O): Press the green button at the top right to turn the AV receiver on or off.
- Input: Use the 'INPUT' button or dedicated input buttons (e.g., BD/DVD, GAME, VIDEO, TV, TUNER) to select the desired audio/video source.
- Volume (+/-): Adjust the master volume using the 'MASTER VOL' buttons located towards the bottom of the remote.
- Muting: Press the 'MUTING' button to temporarily silence the audio. Press again to restore sound.
3.2 Navigation and Menu Control
- Directional Pad (Arrow Buttons): Use the up, down, left, and right arrow buttons to navigate through on-screen menus.
- Enter (Center Button): Press the center button within the directional pad to confirm selections.
- MENU: Access the main menu of your AV receiver.
- RETURN/EXIT: Go back to the previous screen or exit a menu.
- TOOLS/OPTIONS: Access additional settings or options within certain menus.
3.3 Advanced Functions
- Sound Field: Adjust audio modes and sound fields.
- DIMMER: Adjust the brightness of the receiver's display.
- NIGHT MODE: Optimize audio for late-night listening.
- AMP MENU: Access amplifier-specific settings.
- TV VOL / TV CH: These buttons are typically used for controlling a connected television if the remote is programmed for it, though this replacement remote is primarily for the AV receiver.
4. Maintenance
Proper maintenance ensures the longevity and reliable performance of your remote control.
4.1 Cleaning
- Wipe the remote control with a soft, dry cloth.
- For stubborn dirt, lightly dampen the cloth with water or a mild, non-abrasive cleaner. Do not spray cleaner directly onto the remote.
- Avoid using harsh chemicals, solvents, or abrasive cleaning pads, as these can damage the remote's surface or internal components.
4.2 Battery Replacement
Replace batteries when the remote's response becomes sluggish or stops working. Always replace both batteries at the same time with new 1.5V AA alkaline batteries. Do not mix old and new batteries, or different types of batteries.
4.3 Storage
If the remote control will not be used for an extended period, remove the batteries to prevent leakage and potential damage to the remote.
5. Troubleshooting
If you encounter issues with your remote control, refer to the following troubleshooting steps:
- Remote is not responding:
- Ensure batteries are installed correctly with the correct polarity (+/-).
- Replace old batteries with new 1.5V AA alkaline batteries.
- Check for any obstructions between the remote control and the AV receiver's IR sensor.
- Ensure you are within the operational range (up to 32 feet) and pointing the remote directly at the receiver.
- Some buttons are not working:
- This may indicate low battery power. Replace batteries.
- Ensure the button is clean and not stuck.
- Remote works intermittently:
- This is often a sign of weak batteries. Replace them.
- Verify there are no strong light sources (like direct sunlight or fluorescent lights) interfering with the IR signal.
6. Specifications
| Brand | AIDITIYMI |
| Model Name | RM-AAU104 |
| Model Number | AIDITIYMI-RM-AAU104-ad001 |
| Compatible Devices | Sony AV Home Theater Receivers (e.g., STR-DH520, HT-DDW3500, STR-K3500SW, STR-KM3500, STR-KS380, STR-KS470) |
| Connectivity Technology | Infrared (IR) |
| Number of Buttons | 52 |
| Maximum Range | 32 Feet |
| Battery Type | 2 x AA 1.5V Alkaline Batteries (not included) |
| Color | Black |
| Dimensions (L x W x H) | 8" x 2" x 0.6" (approximately) |
| Special Feature | Ergonomic Design |
7. Warranty Information
The AIDITIYMI RM-AAU104 Replacement Remote Control comes with a 1-Year Warranty from the date of purchase. This warranty covers manufacturing defects and ensures the product functions as intended under normal use.
Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by misuse, accidents, unauthorized modifications, or battery leakage.
8. Support
For further assistance, troubleshooting not covered in this manual, or warranty inquiries, please contact AIDITIYMI customer support through the retailer where the product was purchased. Provide your product model number (RM-AAU104) and a detailed description of the issue to receive prompt support.