Sony RMT-D123A Manual

The Sony RMT-D123A is a universal infrared remote control designed for compatibility with a wide range of Sony audio/video equipment, including TVs, DVD/Blu-ray players, home theater systems, and soundbars. It features a streamlined button layout, learning capability for non-Sony devices, macro programming for multi-device control sequences, and ergonomic design. Powered by two AAA batteries. Below are key sections for overview, features, setup, programming, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Infrared transmitter, LCD display (on select models), Device selection buttons, Numeric keypad, Navigation cluster, Special function keys (Power, Volume, Mute, Input, Menu).

Feature	Description
Universal Compatibility	Pre-programmed codes for Sony TVs, Blu-ray, audio systems, and cable/satellite boxes
Learning Function	Can learn commands from original remotes of non-Sony devices
Macro Programming	Stores sequences of up to 10 commands for one-touch operation
Device Selection	Dedicated buttons (TV, DVD, AUDIO, CABLE/SAT) to control multiple devices
Backlit Buttons	Illuminated keypad for low-light conditions (on specific variants)
Ergonomic Design	Contoured shape with intuitive button placement
Battery Indicator	Low battery warning via LED or display
Code Search	Automatic and manual code search for device setup
Factory Reset	Restores original settings
Child Lock	Optional lock to prevent accidental macro activation

Package Contents

Unpack and verify all items are present.

1. Sony RMT-D123A Remote Control (1 unit)
2. AAA Batteries (2 pieces)
3. Quick Start Guide
4. Code List Booklet (with manufacturer codes)
5. Warranty Information Card

NOTE: If any item is missing or damaged, contact Sony support or your retailer.

Initial Setup & Battery Installation

Prepare remote for first use.

1. Open battery compartment: Slide cover on rear.
2. Insert batteries: Place two AAA batteries, observing correct polarity (+/-).
3. Close compartment: Ensure cover clicks securely.
4. Remove protective film: From infrared transmitter window if present.
5. Test remote: Point at device, press POWER to check response.

CAUTION! Use only recommended battery type. Do not mix old and new batteries.

Specifications

• Model: RMT-D123A
• Type: Universal Infrared Remote Control
• Power Source: 2 x AAA batteries (1.5V each)
• Battery Life: Approx. 12 months with typical use
• Operating Range: Up to 8 meters (26 feet), within 30-degree angle
• Compatibility: Sony and select non-Sony audio/video devices
• Learning Capacity: Up to 20 commands (device dependent)
• Macro Memory: Stores 3 macros with up to 10 steps each
• Dimensions: Approx. 155mm x 45mm x 20mm (L x W x H)
• Weight: Approx. 85g (including batteries)
• Operating Temp: 0°C to 40°C (32°F to 104°F)

Controls and Layout

Top section: Device buttons (TV, DVD, AUDIO, CABLE/SAT). Center: Navigation (Arrow keys, OK/Enter). Lower: Numeric keypad (0-9), Volume/Channel, Mute, Power. Special: SETUP, LEARN, MACRO, INPUT, MENU, GUIDE, EXIT.

Indicator LED: Blinks red during programming/learning; steady red for low battery warning.

Button Functions: POWER (toggles device on/off), MUTE (audio on/off), INPUT (cycles sources), MENU (accesses device menu), GUIDE (interactive program guide), EXIT (closes menus).

Device Setup & Code Search

To program remote for a specific device:

1. Turn on the device you wish to control.
2. Press and hold the corresponding device button (e.g., TV) until LED blinks twice.
3. Enter 4-digit code from code list for your device brand/model.
4. Point remote at device and press POWER. If device turns off, press SETUP to lock code.
5. If code fails, use auto search: Hold device button, press and hold POWER, release when device turns off.

Tip: Test volume and menu buttons after programming to ensure full functionality.

Learning Function

To teach remote a command from another remote:

1. Press and hold LEARN button until LED lights red.
2. Press the button on this remote you wish to program (e.g., INPUT).
3. Point original remote at front sensor (within 3 cm), press and hold its corresponding button until LED blinks green.
4. Repeat for additional commands (max 20).
5. Press LEARN to exit learning mode.

WARNING! Keep remotes steady and close during learning. Avoid strong ambient light.

Macro Programming

Create a sequence to control multiple devices with one button.

1. Press and hold MACRO button until LED lights.
2. Press MACRO again to select memory slot (1, 2, or 3).
3. Press device button (e.g., TV), then command (e.g., POWER). Wait for LED blink.
4. Add up to 9 more steps (device + command) with 0.5-second pauses between.
5. Press MACRO to save sequence.
6. To run: Press MACRO, then slot number (1,2,3).

Example Macro: "Watch DVD" = TV POWER, INPUT to HDMI1, AUDIO POWER, DVD POWER.

Care & Maintenance

Remove batteries if not used for extended period. Clean with dry, soft cloth; do not use solvents.

CAUTION! Avoid dropping, exposure to liquids, extreme temperatures, and direct sunlight.

Regulatory & Support

FCC Part 15: Class B digital device; complies with limits for residential use. This device complies with Industry Canada license-exempt RSS standard(s). Copyright © Sony Corporation. Sony and the Sony logo are trademarks of Sony Group Corporation. For support, code lists, and firmware updates, visit www.sony.com/remotesupport or contact Sony Customer Service at 1-800-222-7669.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Remote not working	Dead batteries, obstruction, wrong device selected	Replace batteries; point directly at device IR sensor; press correct device button.
Partial functions work	Incorrect code, learning failure	Re-enter correct code from list; re-learn command.
Macro doesn't run fully	Steps too fast, device not in range	Re-program with longer pauses between steps; ensure all devices are on and in line of sight.
LED flashes continuously	Low battery, programming error	Replace batteries; perform factory reset.
Cannot learn commands	Original remote not IR, distance too great	Ensure original remote is IR (not RF); hold within 3 cm during learning.

Factory Reset: Press and hold SETUP + TV + POWER simultaneously for 5 seconds until LED flashes rapidly.

Service: 1-800-222-7669; www.sony.com/remotesupport