To Next PageTo Next PageWhat to do if my Panasonic SB-HWA520GK Home Cinema speakers subwoofer (SB-HWA520) has no sound?
If your Panasonic Home Cinema speakers' subwoofer (SB-HWA520) isn't producing any sound, examine the wireless connection between the main unit and the subwoofer.
Why does my Panasonic SB-HWA520GK subwoofer (SB-HWA520) sound skip?
If the subwoofer (SB-HWA520) sound skips, check for radio wave interference from other wireless equipment operating in the 5.2GHz band.
General| Brand | Panasonic |
|---|---|
| Model | SB-HWA520GK |
| Category | Home Cinema speakers |
| Language | English |
General safety instructions for servicing and handling the unit.
Precautions before performing repair or adjustment procedures.
Information on the unit's protection circuitry and troubleshooting.
Specific cautions for replacing fuses in the SU-HTB550.
Cautionary notes regarding the SMPS module in the active subwoofer.
Safety precautions for the AC mains lead, specifically for GS models.
List of safety-critical components and replacement guidelines.
Guidelines for safely installing the unit to prevent hazards.
Techniques to prevent damage to ES devices from static discharge.
Service cautions related to legal restrictions, like lead-free solder.
Overview of the service manual's content for service personnel.
Explanation of the VIERA Link feature for system control.
Description of the buttons and controls on the main unit.
Explanation of the system's indicator lights and their meanings.
Details on the functions of the remote control buttons.
Instructions for connecting the main unit to other devices.
Step-by-step guide for connecting the unit to a TV via HDMI.
Procedures for connecting Blu-ray players, DVD players, and set-top boxes.
Instructions for connecting the AC power cord to the unit and outlet.
Procedures for entering and utilizing the service mode for diagnostics.
How to check the firmware version and regional settings of the microprocessor.
Procedures to check the model display and ROM correction status.
Explanation of error codes indicated by LED status lights.
Procedure to perform a cold start or reset for the main unit.
Steps for pairing the main unit with the active subwoofer.
Instructions to set the audio delay for synchronized audio-video.
Flowchart detailing the disassembly process for internal inspection.
Disassembly procedures specific to the main unit.
Disassembly flowchart for the active subwoofer unit.
Identification and types of screws used in different unit parts.
Diagrams showing the location of major internal parts for each unit.
Step-by-step instructions for removing the top cabinet of the main unit.
Procedure for removing the main printed circuit board from the unit.
Steps to remove the Switched-Mode Power Supply (SMPS) printed circuit board.
Guide for replacing the switching regulator IC, including disassembly.
Guide for replacing the rectifier diode, including disassembly.
Steps to remove the rear panel of the main unit.
Procedure for removing the DAMP printed circuit board.
Steps to remove the front panel assembly of the main unit.
Instructions for removing wireless adapter and digital transmitter module PCBs.
Steps to remove the power button printed circuit board.
Procedures for removing button and panel PCBs from the front panel.
Steps to disassemble the front speaker unit in bar configuration.
Steps to disassemble the front speaker unit in standing configuration.
Instructions for disassembling the rear cabinet of the front speaker.
Steps to remove the tweeter speaker component from the front speaker.
Steps to remove the woofer speaker component from the front speaker.
Procedure for removing the port unit from the front speaker assembly.
Instructions for replacing the speaker wires within the front speaker.
Steps to remove the rear panel from the active subwoofer.
Procedure for removing the DAMP printed circuit board from the subwoofer.
Steps to remove the digital receiver module PCB from the subwoofer.
Guide for replacing the digital amplifier IC in the subwoofer.
Steps to remove the power button PCB from the subwoofer.
Steps to remove the SMPS module PCB from the subwoofer.
Steps to remove the bottom panel block from the subwoofer.
Steps to remove the AC inlet PCB from the subwoofer.
Steps to remove the woofer speaker from the subwoofer.
Information on accessing and servicing the main unit's internal components.
Procedures for checking and repairing the main PCB (Side A).
Steps for checking and repairing the SMPS PCB of the main unit.
Procedures for checking and repairing the DAMP PCB (Side A) of the main unit.
Procedures for checking and repairing the DAMP PCB (Side B) of the main unit.
Procedures for checking and repairing the panel PCB of the main unit.
Procedures for checking and repairing the DAMP PCB of the subwoofer.
A simplified block diagram showing the system's overall control flow.
Block diagram illustrating the power supply distribution within the system.
Block diagram detailing the system's control logic and signal flow.
Block diagram illustrating the HDMI signal path and related components.
Table listing terminal functions for key ICs used in the system.
Block diagram of the power supply system, part 1.
Diagram showing the wiring connections for the main unit.
Diagram showing the wiring connections for the active subwoofer.
Explanations of symbols, lines, and notations used in the schematics.
Detailed schematics for the main unit's circuits.
Schematic diagram of the HDMI circuit, part 1 of 4 for the main unit.
Schematic diagram of the HDMI circuit, part 2 of 4 for the main unit.
Schematic diagram of the CPU circuit, part 1 of 2 for the main unit.
Schematic diagram of the DSP circuit, part 1 of 2 for the main unit.
Schematic diagram of the DAMP circuit, part 1 of 2 for the main unit.
Schematics for panel, button, power button, and wireless adapter circuits.
Schematic diagram of the Switched-Mode Power Supply (SMPS) circuit.
Detailed schematics for the active subwoofer's circuits.
Schematic diagram of the DAMP circuit for the active subwoofer, part 1/2.
Visual layout of the main unit's printed circuit boards.
Component layout for the main PCB, Side A of the SU-HTB550.
Component layout for the main PCB, Side B of the SU-HTB550.
Component layout diagrams for the DAMP PCB of the main unit.
PCB layouts for panel, button, power, and wireless adapter components.
Component layout diagrams for the SMPS PCB of the main unit.
Visual layout of the active subwoofer's printed circuit boards.
PCB layout diagrams for the DAMP, power button, and AC inlet of the subwoofer.
Standard voltage and waveform values for troubleshooting.
Voltage measurement data for the main unit's PCB.
Voltage measurement data for the main unit's PCB (pages 2/6).
Voltage measurement data for the main unit's PCB (pages 3/6).
Voltage measurement data for the main unit's PCB (pages 4/6).
Voltage measurement data for the main unit's PCB (pages 5/6).
Voltage measurement data for the main unit's PCB (pages 6/6).
Voltage measurement data for the main unit's DAMP PCB (pages 1/2).
Voltage measurement data for the main unit's DAMP PCB (pages 2/2).
Voltage measurement data for the active subwoofer.
Voltage measurement data for the active subwoofer's DAMP PCB.
Visual representation of signal waveforms for troubleshooting.
Waveform charts for various points in the main unit.
Waveform charts for the active subwoofer.
Visual identification of components for the main unit.
Visual identification of components for the active subwoofer.
Detailed pin functions for the main microprocessor IC.
Visual breakdown of the unit's mechanical parts for replacement.
Diagram showing the location of cabinet parts for the main unit.
Diagram showing the location of cabinet parts for the front speakers.
Diagram showing the location of cabinet parts for the active subwoofer.
List of mechanical replacement parts for the main unit and speakers.
List of electrical replacement parts for the main unit, including ICs and transistors.
List of electrical replacement parts for the active subwoofer.
