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Service Guide

SP-i160

Chapter 3. Block Diagram

Audio

—
►

Tone

Control

Volume

Control

—
►

L.CH Speaker

A

Power

i

Ac

in

Conditioner

Version : 1.0

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Summary of Contents for SP-i160

Page 1: ...Service Guide SP i160 SERVICE GUIDE KYESYSTEMS CORP SP i160 Version 1 0 Page 1 of 14 ...

Page 2: ...Service Guide SP i160 Version 1 0 Revision History Version Date Change 1 0 15 01 2010 Version 1 0 Page 2 of 14 ...

Page 3: ... 2 1 No sound Line in jack no function 7 1 2 2 Power LED indicator no light 8 1 2 3 Li ION battery can t charge 8 Chapter 2 Specifications 9 Chapter 3 Block Diagram 10 Chapter 4 Exploded View 11 Chapter 5 Part List 12 Chapter 6 Schematic Diagram 13 Chapter 7 Important Notes 14 7 1 Packing Requirement for Sending the PCB Assembly by Post 14 7 2 Short of Spare Parts while Repairing a Speaker System ...

Page 4: ...ect 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 a...

Page 5: ... Defective speakers from Customers Function NG __ __ Analyzing possible malfunction causes Function NG Deciding proceeding the rectification methods Function OK Replace necessary defective parts Function OK Return the speakers with proper repackaging to customers Version 1 0 Page 5 of 14 ...

Page 6: ...Service Guide SP i160 1 2 Problems Item Problem Description 1 2 1 No sound Line in jack no function 1 2 2 Power LED indicator no light 1 2 3 Li ION battery can t charge Version 1 0 Page 6 of 14 ...

Page 7: ... the problems 1 2 1 One or more channels no sound Line in jack no function Problem No sound Analyzer and Identify the Causes Broken or short circuit Defective U1 U4 Speaker cable dis connect JACK1 or JACK2 defective or speaker damaged Solutions Check solder points on PCB CheckandReplace defective IC Re connect speaker cable or replace defective speaker s Version 1 0 Page 7 of 14 ...

Page 8: ...witch or LED defective Defective J1 Solutions Re solder or replace defective component s 1 2 3 The Li ION Battery can t charge Problem The Li ION battery can t charge Analyzer and Identify the Causes Broken or short circuit U2 Battery Solutions Check solder points on PCB Check and Replace defective components Version 1 0 Page 8 of 14 ...

Page 9: ... 2 Specifications NO Description Unit Specifications 1 Out Power at THD 10 W 1 8 2 Sensitivity mV 600 50 3 Freq Response 1KHz 3dB Hz 180 20K 10 4 Separation dB 40 5 S N ratio dB 80 6 Hum Noise Vol max mV 2 Version 1 0 Page 9 of 14 ...

Page 10: ...Service Guide SP i160 Chapter 3 Block Diagram Audio Tone Control Volume Control L CH Speaker A Power i Ac in Conditioner Version 1 0 Page 10 of 14 ...

Page 11: ...Service Guide SP i160 Chapter 4 Exploded View Version 1 0 Page 11 of 14 ...

Page 12: ...507003 0026 IC JRC NJM2761 1 PC IC T1 TPA2031D1 1 Set RCI203101 0001 IC LN LN2054 1 PC BATTERY SP i160 1 PC FBY508037 0003 FANNEL BAG SP i160 1 PC 12290076100 S N LABEL SP i160 2 PC 12061017100 CARD SP i160 B 12020186100 CARD SP i160 W 1 PC 12020187100 INNER TRAY SP i160 1 PC 12150227100 PET BOX SP i160 1 PC 12140001100 Anti fake Label on Gift Box 1 PC 12061993100 No 1 2 3 4 5 6 7 8 9 10 11 12 13 ...

Page 13: ...Service Guide SP i160 Chapter 6 Schematic Diagram Pls refer to next page Version 1 0 Page 13 of 14 ...

Page 14: ...GND 2 BAT 3 PROG 5 Vcc 4 U2 R10 2K LD1 RED BT1 BATTERY LN2054 Vcc S1 SW SPDT USB ON BAT ON C13 151 R12 2K LD2 BLUE R9 BEAD120 Q1 NC C14 NC SP i160 C20 224 C17 224 C18 223 C23 224 GND V 1 Out1 2 IN1 3 INT 4 SW 7 IN2 8 OUT2 9 GND 10 Vref 5 Sense 6 U4 IC NJM2761 GNDGND R7 3 6k C16 151 C19 224 C22 105 C21 105 Vcc GND C7 471 R1 68k R3 240k R2 1k C8 270P C10 270P C9 270P R6 100K VDD B1 IN C1 IN A1 ShutD...

Page 15: ...each PCB assembly with a separate static protecting bag in order to avoid static electricity Reliable external packing is also very important when sending PCB assembly by post in that it would avoid unnecessarily lost or damage 7 2 Short of Spare Parts while Repairing a Speaker System If you are short of spare parts when you have some speaker systems waiting to be repaired it would be recommended ...

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