Service Manuals, User Guides, Schematic Diagrams or docs for : . Rare and Ancient Equipment GENIUS Audio SP-HF1250A hfe_genius_sp-hf1250a_service_en
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SERVICE GUIDE
KYE SYSTEMS CORP.
SP-HF1250A
Version:1.0
Total 16 Pages (Cover Page included)
s ervice SP-HF1250A
Guide
Revision History
Version Date Changes
10 Official Release
Version: 1.0 Page 1/15
s ervice SP-HF1250A
Guide
Table of Contents
Revision History................................................................................1
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
1.2.1 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
Chapter3. Block Diagram.........................................................................9
Chapter4. Exploded View.........................................................................10-11
Chapter5. Part List................................................................................12-13
Chapter6. Important Notes......................................................................14
6.1 Packing Requirement for sending the PCB Assembly by post.............14
6.2 Short of Spare Parts while Repairing a Speaker System....................14
Chapter7. Circuit Schematic.....................................................................15
Version: 1.0 Page 2/15
s ervice SP-HF1250A
Guide
Getting Started
Conventions Used in this Guide
Pay Special Attention: Instructions that are important to
remember and may prevent mistakes.
Attention
Caution: Information that, if not followed, may result in
damage to the product.
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.
Version: 1.0 Page 3/15
s ervice SP-HF1250A
Guide
Chapter 1. How to Handle Defective Returns
1.1 Overview
Receiving Defective
Speakers
from Customers
Verifying problems&
Proceeding necessary tests
Functioning NG
Analyzing possible
Malfunction causes
Deciding & proceeding
Functioning OK
Functioning NG the rectification methods
Replacing necessary
Defective parts
Proceeding tests
To verify if the speaker is
functioning normally
Functioning OK
Return the speakers with
Proper repackaging to customers
Version: 1.0 Page 4/15
s ervice SP-HF1250A
Guide
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
Version: 1.0 Page 5/15
s ervice SP-HF1250A
Guide
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
1.2.1 Power LED (indicator) unlighted
Problem
Power LED indicatorunlighted
Analyze
and Secondary wire Of CheckD1.2 Check Defective power
Identify transformer is .3.4 LED Switch
the Causes Disconnedcted of
defective
Solutions
Resolder or replace defective components
Version: 1.0 Page 6/15
s ervice SP-HF1250A
Guide
1.2.2 Does not work or one channel no sound
Problem
Does not work or
One channel no sound
Analyze
and Defective Broken or Defective IC
Identify the Audio cable Short circuit (TDA2030A)
Causes
Replace Check solder Check and replace
Audio cable Points on PCB Defective IC
Solutions And resolder (TDA2030A)
defective one(s)
1.2.3 Noise
Problem
Noise
Analyze and
Identify the
Causes Component(s) around Defective Defective IC
IC is/are defective VR (TDA2030A)
Solutions
Check and replace Replace Replace defective IC
defective component(s) Defective VR (TDA2030A)
Version: 1.0 Page 7/15
s ervice SP-HF1250A
Guide
Chapter 2. Specifications
Satellite
No DESCRIPTION UNIT NOMINAL LIMIT
.
FR FL 19
1. FRONT OUTPUT POWER @THD 10% W 19.8 19.8
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