Home SW-HF5.1 5000 Schematic
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SSWW--HHFF55..11 5500000
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Total 26 Pages (Cover Page included)
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Revision History
Version Date Changes
W-HF5.1 5000
1．0
Official Release
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Table of Contents
Revision History
Table of Contents………………………………………………… ………….2
Getting Started………………………………………………… ……….……………....3
Conventions Used in this Guide………………… ………...……………….3
Safety Precautions……………………………… ………………...………..3
Chapter1. How to Handle Defective Returns………………… ……………………….4
1.1 Overview……………………………………………………………….4
1.2 Problems………………………………………………………………..5
……………………………………………………………… ……..1
1.2.1 Power LED (indicator) Unlighted………………...……………......6
1.2.2 Does not work or one channel no sound……………………….…..7
1.2.3 Noise……………………………………………………………….7
Chapter2. Specifications………………………………………………………………..8-9
Chapter3. Block Diagram……………………………………………………………....10
Chapter4. Exploded View…………………………………………………………….…11-14
Chapter5. Part List……………………………………………………………………..15-18
Chapter6. Important Notes…………………………………………………………....19
6.1 Packing Requirement for sending the PCB Assembly by post……….…19
6.2 Short of Spare Parts while Repairing a Speaker System…………….….19
Chapter7. Circuit Schematic……………………………………………………………20-25
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Getting Started
Conventions Used in this Guide
Pay Special Attention: Instructions that are important to
Attention
remember and may prevent mistakes.
Caution: Information that, if not followed, may result in
damage to the product.
W-HF5.1 5000
Safety Precautions
The following precautions should be observed in handling the speaker described in this guide:
Place the speakers on a flat level and stable surface.
Do not place the speakers in environments subject to mist, smoke, vibration, excessive dust,
salty or greasy air, or other corrosive gases and fumes.
Do not drop or jolt the speakers.
Do not allow anything to drop into the subwoofer case through its ventilator, as it could
result in fatal electric shock or fire.
Place the unit far enough from other equipments for good heat dissipation.
Disconnect the AC power cord from the AC outlet before performing any maintenance on the
speakers.
Do not perform any maintenance with wet hand.
Prevent foreign substance, such as water, other liquids or chemicals, from entering the
speakers while performing maintenance procedures on the speakers.
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Chapter 1. How to Handle Defective Returns
W-HF5.1 5000
1.1 Overview
Receiving Defective
Speakers
from Customers
Verifying problems&
Proceeding necessary tests
Functioning NG
Analyzing possible
Malfunction causes
Functioning NG
Deciding & proceeding
the rectification methods
Functioning OK
Replacing necessary
Defective parts
Proceeding tests
To verify if the speaker is
functioning normally
Pro
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Functioning OK
Return the speakers with
er repackaging to customers
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1.2 Problems
Item Problem descriptions
1.2.1 Power LED (indicator) unlighted
1.2.2 Does not work or one channel no sound
1.2.3 Noise
W-HF5.1 5000
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Please follow the numbered sequence marked within parenthesis given in individual
Flow chart, in that this is the best-recommended sequence to rectify the problems.
Attention
W-HF5.1 5000
1.2.1 Power LED (indicator) unlighted
Problem
Analyze
and
Identify
the Causes
Solutions
Secondary wire Of
transformer is
Disconnedcted of
defective
Power LED （indicator）unlighted
IC SN8P27
14KB
Resolder or replace defective component（s）
IC 78L05
burnt
Defective powe
Switch or LED
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W-HF5.1 5000
1.2.2 Does not work or one channel no sound
Problem
Analyze and
Identify the
Causes
Solutions
Defective
Audio cable
Replace
Audio cable
Does not work or
One channel no sound
Broken o
Short circuit
Check solde
Points on PCB
And resolder
defective one(s)
Defective IC
Check and replace
Defective IC
1.2.3 Noise
Problem
Analyze and
Identify the
Causes
Solutions
Component(s) around
IC is/are defective
Check and replace
defective component(s)
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Noise
Defective VR Defective IC
Replace
Defective VR
Replace defective IC
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