Sony SRF-X90 Radio User Manual

The Sony SRF-X90 is a portable digital radio featuring AM/FM tuner with 30 station presets, digital tuning with auto-scan, large LCD display with backlight, built-in speaker and headphone jack, alarm clock with sleep timer function, bass boost for enhanced audio, and operates on 2 AA batteries or optional AC adapter. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Using the Tuner 8. Clock and Alarm Functions 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital AM/FM tuner, LCD display, Speaker, Headphone jack, Power switch, Tuning/Volume controls.

FeatureDescription
AM/FM TunerDigital tuning with auto-scan and 30 station presets (15 AM, 15 FM)
LCD DisplayShows frequency, time, preset number, battery status with backlight
SpeakerBuilt-in 2-inch dynamic speaker
Headphone Jack3.5mm stereo jack for private listening
Power Source2 AA batteries or DC 3V AC adapter (optional)
Clock/AlarmDigital clock with alarm and sleep timer function
Bass BoostEnhances low-frequency response
Tuning ControlManual tuning buttons and auto-scan
Volume ControlRotary dial for audio level adjustment
Preset ButtonsDirect access to stored stations

Installation

Unpack and inspect contents. Place on stable surface.

  1. Insert batteries: Open battery compartment, insert 2 AA batteries observing polarity.
  2. Connect AC adapter (optional): Plug DC 3V adapter into DC IN jack.
  3. Extend antenna: Fully extend telescopic antenna for best reception.
  4. Power on: Slide POWER switch to ON position.

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

First-Time Setup

Power on radio; follow initial setup steps.

  1. Set time: Press CLOCK button, use TUNING buttons to set hour/minute.
  2. Auto-scan stations: Press and hold SCAN button to automatically search and store stations.
  3. Store presets: Tune to desired station, press and hold preset button (1-30) for 2 seconds.
  4. Adjust settings: Use MENU button to access bass boost, backlight duration, etc.

CAUTION! Keep away from moisture and extreme temperatures.

Specifications

Controls and Settings

Front Panel: POWER switch, VOLUME control, TUNING buttons, PRESET buttons, LCD display.

Side Controls: BASS BOOST switch, SLEEP timer button, ALARM set button, CLOCK button, MENU button.

Tuner: Manual tuning (UP/DOWN), Auto-scan (SCAN), Preset memory (1-30). Audio: Volume control, Bass boost (On/Off). Clock: Time set, Alarm set (radio or buzzer), Sleep timer (15-90 minutes). Display: Backlight (On/Auto/Off), Contrast adjustment via MENU.

Connecting Devices

Headphones: 3.5mm stereo jack. AC Adapter: DC IN jack (3V).

  1. Turn off radio before connecting devices.
  2. Insert headphone plug fully into jack.
  3. For AC adapter, ensure voltage matches (3V DC).
  4. Select audio source via MODE (AM/FM).

Tip: Use headphones for private listening; disconnect when not in use.

Using the Tuner

Supports AM and FM bands with digital tuning.

  1. Select band: Press BAND button to toggle AM/FM.
  2. Manual tuning: Press TUNING UP/DOWN buttons to change frequency.
  3. Auto-scan: Press SCAN to automatically find and stop at next strong station.
  4. Store preset: Tune to station, press and hold preset button (1-30).
  5. Recall preset: Press corresponding preset button.
  6. Fine tuning: In AM mode, press and hold TUNING for fine adjustment.
  7. Mute: Press and hold VOLUME down for 2 seconds to mute/unmute.

WARNING! Extend antenna fully for best FM reception. Rotate radio for AM.

Clock and Alarm Functions

Digital clock with alarm and sleep timer.

  1. Set time: Press CLOCK, use TUNING to set, press CLOCK to confirm.
  2. Set alarm: Press ALARM, select alarm type (radio/buzzer), set time, press ALARM to activate.
  3. Snooze: Press any button during alarm to snooze for 5 minutes.
  4. Sleep timer: Press SLEEP repeatedly to set 15-90 minutes; radio turns off automatically.
  5. Backlight: Press LIGHT button to illuminate display (Auto mode turns on with button press).

Care & Cleaning

Remove batteries before cleaning. Use soft, dry cloth only; no liquids or solvents.

CAUTION! Do not use abrasive cleaners. Keep away from heat sources.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © Sony Corporation. For support, visit www.sony.com/electronics/support or contact 1-800-222-7669.

Troubleshooting

SymptomPossible CauseCorrective Action
No powerBatteries/connectionsReplace batteries; ensure proper polarity; check AC adapter connection.
Poor receptionAntenna/locationExtend antenna fully; move to different location; avoid obstructions.
No soundVolume/muteIncrease volume; check mute status; try headphones.
Display dimBattery/backlightReplace batteries; adjust backlight setting via MENU.
Alarm not workingSettings/powerVerify alarm is set and activated; ensure power source is connected.
Presets lostBattery removalPresets are maintained for approx. 1 minute during battery change; reprogram if needed.

Reset: Remove batteries for 1 minute to reset microprocessor.

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

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