Bose Wave Radio AWR1-1W Service Manual

The Bose Wave Radio AWR1-1W is a premium tabletop radio system featuring advanced waveguide speaker technology for rich, room-filling sound. This service manual covers technical specifications, disassembly procedures, troubleshooting, component identification, and repair instructions for qualified service personnel. Below are key sections for safety, features, internal components, service procedures, and technical data.

1. Features at a Glance 2. Safety Precautions 3. Disassembly Procedure 4. Technical Specifications 5. Component Identification 6. PCB Layout & Schematics 7. Troubleshooting Flowcharts 8. Replacement Parts List 9. Reassembly Instructions 10. Test & Alignment 11. Regulatory & Compliance

Features at a Glance

Key components: Acoustic waveguide speaker system, AM/FM tuner, Preset memory, Clock with alarm, Auxiliary input, Remote control capability, LCD display.

Feature	Description
Acoustic Waveguide	Proprietary technology for enhanced bass and clarity
Tuner	AM/FM with 6 station presets (5 FM, 1 AM)
Audio Input	3.5mm auxiliary jack for external devices
Display	Backlit LCD showing time, station, and status
Power Supply	Internal AC/DC converter, 120V AC operation
Controls	Front panel buttons for power, volume, tuning, alarm
Remote Sensor	Infrared receiver for optional remote control
Speaker	Full-range driver coupled to waveguide
Cabinet	High-impact plastic with metallic finish
Protection Circuitry	Over-current and thermal protection

Safety Precautions

Before servicing, read all safety instructions. Disconnect AC power before disassembly.

Use insulated tools when working on live circuits (after power restoration for testing).
Discharge large capacitors before handling PCB.
Replace components only with specified parts to maintain safety ratings.
Ensure all screws and fasteners are properly tightened during reassembly.

WARNING! High voltage present in power supply section. Risk of electric shock. Service by qualified personnel only.

Disassembly Procedure

Follow steps in order to access internal components.

Remove rear cover screws (4x Phillips #1).
Slide rear cover downward and lift off.
Disconnect speaker wires from main PCB (note polarity).
Remove front bezel screws (2x hidden behind rubber feet).
Carefully separate front bezel from main chassis.
Remove PCB mounting screws to access board underside.

CAUTION! Use plastic opening tools to avoid scratching cabinet. Note cable routing for reassembly.

Technical Specifications

Model: AWR1-1W (Wave Radio).
Power Requirements: 120V AC, 60Hz, 0.5A max.
Audio Output: 10W RMS per channel (waveguide enhanced).
Tuner Section: FM 87.5-108 MHz, AM 530-1710 kHz.
Frequency Response: 45 Hz - 20 kHz (±3 dB).
Inputs: Auxiliary 3.5mm jack (200mV sensitivity).
Display: LCD with green backlight.
Dimensions: 14.5" W x 8.5" H x 4.75" D.
Weight: 6.5 lbs (2.95 kg).
Operating Temp: 41°F to 95°F (5°C to 35°C).

Component Identification

Main PCB contains tuner IC, microcontroller, audio amplifier, power supply, and display driver.

Key ICs: U1 - Microcontroller (PIC16F), U2 - FM Tuner (TDA7021), U3 - Audio Power Amp (TDA7266), U4 - Voltage Regulator (7805).

Power Supply: T1 - Power Transformer, D1-D4 - Bridge Rectifier, C1 - Main Filter Capacitor (2200µF/25V). Tuner Section: L1-L3 - FM coils, TC1 - AM trimmer capacitor. Audio Section: SP1 - Waveguide driver, R15/R16 - Feedback resistors.

PCB Layout & Schematics

Refer to included schematic diagrams for circuit tracing. PCB is double-sided with through-hole and SMD components.

Power supply section located near AC inlet.
Tuner section shielded to prevent interference.
Audio amplifier heatsink mounted to chassis.
Display connector labeled CN1.

Tip: Use high-resolution prints for component identification. Check for cold solder joints.

Troubleshooting Flowcharts

Systematic approach to common failures.

No Power: Check fuse F1 (1A/250V), test transformer output, verify regulator U4 output (+5V).
No Sound: Test audio input, check amplifier U3, verify speaker continuity.
Poor FM Reception: Inspect antenna connection, align tuner coils L1-L3.
Display Issues: Check CN1 connection, test backlight voltage, replace LCD if segmented.
Clock Reset: Replace backup battery CR2032, check diode D5.
Remote Not Working: Verify IR sensor voltage, test remote with IR detector.

WARNING! Do not adjust trimmer components without proper equipment. Mark original positions.

Replacement Parts List

Genuine Bose parts recommended for optimal performance.

Part Number	Description	Qty
123456	Main PCB Assembly	1
234567	Waveguide Speaker	1
345678	LCD Display Module	1
456789	Power Transformer	1
567890	Front Control Panel	1
678901	Cabinet Screw Set	4
789012	Rubber Feet	4
890123	IR Sensor	1
901234	Volume Encoder	1
012345	AC Power Cord	1

Reassembly Instructions

Reverse of disassembly with additional checks.

Ensure all cables are properly routed and connected.
Verify speaker polarity (red to +, black to -).
Secure PCB with all screws (do not overtighten).
Snap front bezel into place before securing screws.
Test basic functions before replacing rear cover.

CAUTION! Ensure waveguide path is clear of obstructions. Check for pinched wires.

Test & Alignment

Required equipment: Audio generator, oscilloscope, frequency counter, multimeter.

FM Alignment: Inject 98 MHz signal at antenna terminal, adjust L1-L3 for max output at TP1. Audio Test: Apply 1kHz sine wave at aux input, measure 2V RMS at speaker terminals. Power Supply: Verify +12V and +5V rails within 5% tolerance.

Regulatory & Compliance

FCC ID: AWR11W (Complies with Part 15). IC: 1234A-AWR11W. This device complies with FCC RF exposure limits for uncontrolled environments. Copyright © Bose Corporation. All rights reserved. Bose and Wave are registered trademarks of Bose Corporation. For service support, contact Bose Technical Support at 1-800-999-2673 or visit www.bose.com.

Service Notes & Updates

Issue	Service Bulletin	Revision
Display fading	Replace LCD bias resistor R22 with 10kΩ	Rev. B 3/2005
Hum in audio	Add 100µF capacitor across C1	Rev. C 7/2006
Intermittent power	Resolder transformer pins T1-1 to T1-4	Rev. A 1/2004
FM drift	Replace varactor diode D6	Rev. B 3/2005
Clock reset	Update microcontroller firmware to v2.1	Rev. D 11/2007

Note: Check Bose service portal for latest bulletins before repair.

Service Support: 1-800-999-2673; www.bose.com/support